Passion for Driving and Aggressive Driving Behavior:
A Look at Their RelationshipFrederick L. Philippe andRobert J. Vallerand1

Isabelle Richer
University of Montréal
Montréal, Québec, Canada

Research Laboratory on Social Behavior
University of Québec at Montréal
Montréal, Québec, Canada

Évelyne Vallières

Jacques Bergeron

Télé-University
Montréal, Québec, Canada

University of Montréal
Montréal, Québec, Canada

The purpose of the present research was to investigate the relationship between
passion for driving and aggressive driving behavior in 3 studies. Study 1 examined
the association between passion and aggressive driving behavior in a sample ofundergraduate students. Results showed that an obsessive passion for driving was
associated with aggressive driving behavior, while harmonious passion was not.
Study 2 replicated these results with an ecologically valid sample of communitydwelling drivers. Finally, Study 3 replicated the results obtained in Studies 1 and 2 ina laboratory setting using a driving simulator under controlled frustrating driving
situations with judges’ assessment of aggressive driving behavior. Study 3 also
showed that the emotion of anger mediated the obsessive-passion/aggressivedriving-behavior relationship.
jasp_559

3020..3043

Aggressive driving behavior is defined as behavior performed while drivingthat is intended to cause physical or psychological harm to any sentient being(Dula & Geller, 2003). This can involve tailgating, horn blowing, flashingheadlights, cutting in and out, swearing and hostile gestures, as well as
threatening and assaulting other drivers. Such behaviors are increasingly
present on our roads. Indeed, between 1996 and 2000, reported cases ofaggressive driving behavior increased by a factor of 15 in Canada (Smart &Mann, 2002) and in the U.S. (James & Nahl, 2002).
A recent study showed that the prevalence rate of perpetrators of aggressive driving behavior in Ontario, Canada, was more than 30% (Smart, Mann,

1
Correspondence concerning this article should be addressed to Robert J. Vallerand,
Research Laboratory on Social Behavior, Department of Psychology, University of Québec at
Montréal, C. P. 8888, Station Centre-Ville, Montréal, Québec, Canada H3C 3P8. E-mail:vallerand.robert_j@uqam.ca

3020
Journal of Applied Social Psychology, 2009, 39, 12, pp. 3020–3043.
© 2009 Copyright the Authors
Journal compilation © 2009 Wiley Periodicals, Inc.

PASSION AND AGGRESSIVE DRIVING BEHAVIOR

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Zhao, & Stoduto, 2005). It is also a widespread phenomenon, as aggressive
driving behavior has been reported in many countries, including Canada(Smart & Mann, 2002), the United States (Batten, Penn, & Bloom, 2000),Australia (Harding, Morgan, Indemann, Ferrante, & Blagg, 1998), and theUnited Kingdom (Joint, 1995), among others. Clearly, aggressive driving
behavior has become a common occurrence and a serious social and publichealth problem (Asbridge, Smart, & Mann, 2006). Indeed, aggressive driving
behavior has been shown to be associated with higher reports of car collisions(Wells-Parker et al., 2002).
Past research on aggressive driving behavior has basically looked at how
anger can predict aggressive driving behavior, especially under frustrating
conditions (Deffenbacher, Filetti, Lynch, Dahlen, & Oetting, 2002;
Galovski & Blanchard, 2002; James & Nahl, 2000; Naatanen & Summala,1976; Shinar, 1998; Vallières, Bergeron, & Vallerand, 2005). Furthermore,such research has looked at the relationship between aggressive driving
behavior and some individual differences, such as trait anger (e.g., Deffenbacher, Deffenbacher, Lynch, & Richards, 2003) and susceptibility to driving
stress (e.g., James & Nahl, 2000). Although such research is important, noresearch to date has studied if one’s love or passion for driving may predispose one to act aggressively at the wheel. In the present research, in line withthe dualistic model of passion (Vallerand et al., 2003), it is proposed thatbeing prevented from fully engaging in something you love (e.g., driving),
because of the presence of some obstacles while doing so, may lead one tolash out at the people responsible for these frustrations and thus to display
aggressive driving behavior toward other drivers.

A Dualistic Model of Passion
A passion is defined as a strong inclination toward an activity that individuals like (or even love), find important, and in which they invest time andenergy (Vallerand, 2008; Vallerand et al., 2003). A passionate activity is also
believed to be internalized in one’s identity (Aron, Aron, & Smollan, 1992;
Csikszentmihalyi, Rathunde, & Whalen, 1993; Vallerand et al., 2003). For
instance, individuals who like driving very much, value it highly, and invest
time and energy in it (e.g., driving around without having a specific place togo) will most likely internalize the activity of driving into their identity.
Passionate individuals would then see driving as part of them, might buy a
car with a driving style that resembles them, and could hardly go anywhere
without it. Incidentally, car dealers have understood that people can come tovalue driving highly and to identify with it. Indeed, car advertisements often
depict the type of driving style of a car as resembling the driver (DeBono &3022 PHILIPPE ET AL.
Snyder, 1989): a powerful sports car with a young and attractive individual;
the smooth, quiet driving of a minivan with parents and children; or therough, shaky driving of a Jeep with an adventurous individual.
The dualistic model of passion further posits that two distinct types ofpassion—an obsessive type and a harmonious type—can emerge, dependingon the type of internalization process that takes place (Deci & Ryan, 1985,
2000; Sheldon, 2002; Vallerand, 1997). Obsessive passion entails a strong
desire to perform the activity that is not under the person’s control. It is as if
the activity controlled the person. This type of passion results from a controlled internalization of the activity into one’s identity. Such internalization
originates from intrapersonal or interpersonal pressure, because certain contingencies are attached to the activity (Deci & Ryan, 2002), such as feelings ofsocial acceptance, performance, or self-esteem or because the sense of excitement from driving becomes uncontrollable.
For example, an obsessively passionate driver might have bought a sports
car to enhance himself or herself in the eyes of others. Therefore, the activityof driving is pleasant on the one hand, but on the other hand it is also
associated with a pressuring need to drive in a specific way (e.g., driving fast
to impress others) and can provide a boost of self-esteem. Thus, althoughobsessively passionate individuals love their passionate activity, they feelcompelled to engage in it as a result of these internal contingencies that cometo control them. Individuals with an obsessive passion come to develop
ego-invested self-structures (Hodgins & Knee, 2002). The activity may thencome to occupy an overpowering space in the person’s identity and to lead toa rigid persistence in the pursuit of the activity, even when facing obstacles.
Such an inflexible engagement in the activity is then likely to lead to negative
emotions (e.g., anger, frustration).
Harmonious passion, by contrast, is a strong desire to engage in theactivity that remains under the person’s control. It results from an autonomous internalization (Deci & Ryan, 2000; Ryan & Deci, 2000) of the activity
into the person’s identity. An autonomous internalization occurs when individuals have freely accepted the activity as important for them, without any
contingencies attached to it (Deci & Ryan, 1991; Vallerand, Fortier, & Guay,
1997). The activity remains under their control because it is in concordancewith their authentic selves (Hodgins & Knee, 2002). For example, a harmoniously passionate individual might buy a sports car because he or she is very
sports-oriented. Thus, with this type of passion, the activity is performed outof choice, with no contingencies attached to it. Driving thus comes to occupy
a significant, but not an overpowering space in the person’s identity. Consequently, the person is capable of a flexible engagement in the pleasant activity
and can adapt to upcoming circumstances when prevented from performing
the activity as one would like, or when faced with obstacles to its full pursuit.

PASSION AND AGGRESSIVE DRIVING BEHAVIOR

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Such a flexible engagement in pursuit of the activity is thus unlikely to lead toanger and frustration, even in the face of obstacles and barriers.
Research has provided support for the dualistic model of passion. First,
results of exploratory and confirmatory factor analyses have supported thevalidity and reliability of the two-factor passion scale (Vallerand et al., 2003),
corresponding to harmonious and obsessive passion (Rousseau, Vallerand,
Ratelle, Mageau, & Provencher, 2002; Vallerand et al., 2003; Vallerand,
Rousseau, Grouzet, Dumais, & Grenier, 2006). In addition, both types ofpassion have been found to correlate equally and positively with measuresof activity valuation and time invested in the activity. Also, both types ofpassion have been found to positively correlate with a measure of activity
inclusion in the self and in identity (Aron et al., 1992).
Research has also shown that both types of passion lead to different typesof outcomes. First, obsessive passion has been found to be positively related
to negative emotions during and after activity engagement (Mageau, Vallerand, Rousseau, Ratelle, & Provencher, 2005), as well as when prevented
from engaging in the pleasant activity (Ratelle, Vallerand, Mageau, Rousseau, & Provencher, 2004; Vallerand et al., 2003). Conversely, harmonious
passion has been found to be associated with positive emotions during andafter activity engagement and to be unrelated to negative emotions when
prevented from engaging in the activity (Mageau et al., 2005; Vallerand et al.,2003).
Second, obsessive passion predicts highly rigid and persistent behavior in
conditions in which activity engagement should be stopped, such as wintercycling over icy roads in Québec (Vallerand et al., 2003), persisting in dancing
while injured (Rip, Fortin, & Vallerand, 2006), or heavy involvement ingambling activities (Rousseau et al., 2002) that may be conducive to pathological gambling (Philippe & Vallerand, 2007; Ratelle et al., 2004; Vallerandet al., 2003). As posited by the dualistic model of passion, obsessive passion
comes with an internal compulsion to engage in the activity, even when it is
impossible to perform the activity, ill advised to do so, or when the person
faces obstacles within the context of his or her passionate activity. This
compulsion leads, in turn, to negative emotions and to persisting rigidly in
self-defeating behavior.
Conversely, harmonious passion has been found to be either unrelated or
negatively related to such negative outcomes, as well as to the rigid pursuit ofactivity engagement when it is prevented, obstructed, or ill advised to engage
in the activity. Indeed, findings have revealed that harmonious passion ispositively associated with adaptive outcomes—such as flow and positive
emotions (Vallerand et al., 2003, 2006), higher levels of concentration duringtask engagement (Mageau et al., 2005; Vallerand et al., 2003)—and is unrelated to negative emotions during task engagement (Vallerand et al., 2006).

3024 PHILIPPE ET AL.
Therefore, harmonious passion seems to lead to a flexible, adaptive engagement in the passionate activity and to provide the internal capacity to regulate oneself in situations that may interfere with the pleasure of the activity so
as to not engage in self-defeating or ill-advised behavior.

The Present Research: Passion and Aggressive Driving Behavior
We propose that the dualistic model of passion may add to our understanding of the underlying processes of aggressive driving behavior. A
number of points support this assertion. First, driving can clearly be apassion. Indeed, many drivers are known to internalize driving in their identity by choosing vehicle models associated with a driving style that resembles
their personalities (Sachs, 1992). Furthermore, driving has often beenreported as a highly pleasant, valued activity (Lupton, 2002) in which one
may invest time and energy. Second, past research has shown that not all
drivers react in a similar fashion when faced with frustrating obstacles, suchas traffic jams (e.g., Deffenbacher, Huff, Lynch, Oetting, & Salvatore, 2000).
The dualistic model of passion may account, at least in part, for thesecontextual differences. In the case of an obsessive passion for driving, theactivity is internalized in a controlled fashion in one’s identity. The activity ofdriving thus comes to control the person and breeds an internal compulsion
to engage in the driving activity, leading to rigid and persistent engagement in
it. Therefore, when faced with obstacles to the pursuit of the pleasant driving
activity (e.g., a slow car in front of a driver), a driver characterized by anobsessive passion is unlikely to adapt flexibly to these situations. Indeed,
when faced with the erratic driving of another driver, this obsessively passionate driver is more likely to seek pursuit of the activity in a rigid, persistentfashion (e.g., insisting on passing a slow driver and continuing to drive fast)that should be conducive to the experience of negative emotions (e.g., anger,
frustration) and subsequent ill-advised behavior (e.g., aggressive driving
behavior).
By contrast, with harmonious passion for driving, the driving activity has
been autonomously internalized in the person’s identity. Because it is concordant with the person’s self-integrity, the activity thus occupies a significant, but not overpowering space in the person’s identity. This allows one toengage flexibly in driving and to adapt efficiently to the changing circumstances of the road. Therefore, harmoniously passionate drivers facing
obstacles to their pleasure of driving, such as a traffic jam or the erratic
behavior of another driver should flexibly adapt to such situations without
experiencing negative emotions (e.g., anger, frustration) and without engaging in inappropriate, aggressive driving behavior toward other drivers.

PASSION AND AGGRESSIVE DRIVING BEHAVIOR

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The purpose of the present research is to examine the relationship between
passion and aggressive driving behavior. Study 1 assesses the association
between passion (especially obsessive passion) and general aggressive driving
behavior with a sample of undergraduate students. Study 2 tests the ecologicalvalidity of this relationship by examining the link between obsessive passion
and general aggressive driving behavior in a large random sample ofcommunity-dwelling drivers. Furthermore, Study 2 investigates if the relationship between obsessive passion and aggressive driving behavior also occurredin a recent frustrating driving episode. Finally, Study 3 was conducted in alaboratory setting with a driving simulator and provides an examination of therelationship between passion and aggressive driving behavior under frustrating driving situations using both observable and self-report measures ofaggression. Study 3 also seeks to determine if anger mediates the relationshipbetween obsessive passion and aggressive driving behavior.
Study 1The purpose of Study 1 is to test the association between passion andgeneral aggressive driving behavior. Participants completed the Passion Scale(Vallerand et al., 2003) and the Driving Anger Expression Inventory (Deffenbacher, Lynch, Oetting, & Swaim, 2002), which assesses aggressive behavior when driving. In line with past research on passion (Ratelle et al., 2004;
Rip et al., 2006; Rousseau et al., 2002; Vallerand et al., 2003), it is hypothesized that obsessive passion will be positively associated with maladaptive
outcomes; in the present case, aggressive driving behavior in general. Conversely, it is hypothesized that harmonious passion will not be associatedwith aggressive driving behavior.
MethodParticipants
A total of 133 undergraduate and graduate students (87 females, 46
males) from a French-Canadian university took part in this study. They were
between 20 and 66 years of age (M = 27.7 years, SD = 8.0). They had been
driving for 9.8 years on average (SD = 8.1 years), and drove an average of
13,070.20 km per year (SD = 11,688.07 km).
Measures
Driving Passion Scale (DPS). The DPS was created by adapting the
Passion Scale (Vallerand et al., 2003) to tap an individual’s passion for3026 PHILIPPE ET AL.
driving. The Passion Scale has been used in several studies and has beenshown to display high levels of validity and reliability (Ratelle et al., 2004;
Rip et al., 2006; Rousseau et al., 2002; Vallerand et al., 2003; Vallerand &Houlfort, 2003; Vallerand, Rousseau et al., 2006).
The DPS is divided into two subscales of six items each: the obsessive
passion subscale, and the harmonious passion subscale. Respondents use a
7-point, Likert-type scale ranging from 1 (do not agree at all) to 7 (verystrongly agree) to rate the items. A sample item from the harmonious passion
subscale is “Driving is in harmony with the other activities in my life,” whilea sample item from the obsessive passion subscale is “I have difficulties
controlling my urge to drive.”
Data collected from this study were used to conduct a confirmatory factor
analysis on the Driving Passion Scale using LISREL 8 (Jöreskog & Sörbom,
2003). The analysis confirms the bifactorial structure of the scale. The c2/df
ratio was in the acceptable range, c2 (51, N = 133) = 89.83, p < .000,
c2/df = 1.76, and other fit indexes were adequate: non-normed fit index(NNFI) = .97; comparative fit index (CFI) = .98; root mean square error of
approximation (RMSEA) = .075 (90% CI = .048; .100); standardized root
mean residual (SRMR = .057); and normed fit index (NFI = .94). All loadings ranged from .54 to .80. Alphas in this study were .85 and .80 for the
harmonious and obsessive passion subscales, respectively.
In addition to the 12 items measuring passion, participants also completed 4 items corresponding to the criteria of passion (Vallerand et al. 2003).
These 4 items assess the extent to which participants like driving, invest timein driving, find driving important, and whether they consider driving to be apassion. These items were rated to on a 7-point scale ranging from 1 (do notagree at all) to 7 (very strongly agree). Correlations between the two types ofpassion on the one hand and these four criteria, on the other, ranged from .49
to .76 ( p < .001), thus confirming that both types of passion for driving arestrongly associated with the passion criteria. These results replicate past
research with the concept of passion (Vallerand et al., 2003) and support its
validity and reliability as applied to driving.2
Aggressive driving behavior. The Driving Anger Expression Inventory(DAX; Deffenbacher, Lynch et al., 2002) assesses the extent to which one
2
In the three studies in the present article, we measured these four criteria of passion. An
average score of 4 and up on these criteria indicates at least a moderate level of passion(Vallerand & Houlfort, 2003). In Studies 1 and 2, there were 42.3% of participants who reported
being at least moderately passionate for driving. In Study 3, all of the participants were passionate for driving. It is important to note that all of the results in Studies 1 and 2 remained
relatively the same when keeping only passionate participants in the analyses—partial correlations remaining the same or being slightly higher than those obtained with all participants.
Therefore, all participants were kept in the analyses of all three studies.

PASSION AND AGGRESSIVE DRIVING BEHAVIOR

3027

engages in aggressive behavior when driving. Each of the 34 items is rated on
a 4-point scale ranging from 1 (almost never) to 4 (almost always). The scale
contains four subscales. However, in the present study, only the three subscales pertaining to aggressive behavior expression were used. The first subscale contains 12 items that assess verbal aggression expression (e.g., “I swear
or yell at another driver”; a = .83). The second subscale contains 11 items
that tap physical expression of aggression (e.g., “I give another driver thefinger”; a = .88). Finally, the last subscale contains 11 items that measure
aggressive use of the vehicle to express anger (e.g., “I speed up to frustrate
another driver”; a = .82). The DAX has proven to have adequate validity andinternal reliability (Deffenbacher, Lynch, Deffenbacher, & Oetting, 2001;
Deffenbacher, Lynch et al., 2002).

Procedure
Participants were contacted in classrooms of different departments at a
French-Canadian university. They were asked to take part in a study about
driving behavior. They were assured that their answers would remain confidential and anonymous, and that they were free to participate or not.
Participants who accepted the offer to take part in the study completed
the DPS and DAX scales in class and returned their questionnaires tothe experimenter.

Results and Discussion
The DAX subscales were first screened for strength of association
between them. In line with past research (Deffenbacher, Lynch, Deffenbacher et al., 2001; Deffenbacher, Lynch et al., 2002; Deffenbacher et al.,2003), correlational analyses reveal that the verbal, physical, and vehicle use
aggression subscales from the DAX were all associated. Correlations ranged
from .26 to .40 (all ps < .01). Data were also screened for gender differences.
ANOVAs reveal no sex differences for harmonious passion, obsessive
passion, or for the three different DAX subscales (all Fs < 1).
Partial correlations were computed among passion and the different DAX
subscales (see Table 1). As predicted, the results reveal that obsessive passion
for driving was positively associated with all three types of aggression (rsrange from .21 to .33, p < .05). Furthermore, harmonious passion for driving
was unrelated to aggression. These results support our hypotheses andsuggest that obsessive (but not harmonious) passion for driving is implicatedin aggressive driving behavior.

3028 PHILIPPE ET AL.
Table 1
Partial Correlations Between the Two Types of Passion for Driving andAggressive Driving Behavior: Study 1

Obsessive passiona
Harmonious passionb

Verbalexpressionof aggression

Physical
expressionof aggression

Aggressive useof the vehicle

.21*
.03

.33**
-.04

.33**
.00

Note. N = 133.
aControlling for harmonious passion. bControlling for obsessive passion.
*p < .05. **p < .01.

Study 2
The aim of Study 2 is to replicate the results of Study 1 with an ecologically valid sample. A large community-dwelling sample composed of middleage adult drivers was thus recruited. Study 2 also seeks to determine if
obsessive passion is related to aggressive driving behavior in a specificfrustrating driving situation that occurred recently. In line with Study 1, we
hypothesize that obsessive passion for driving will be positively associatedwith aggressive driving behavior, both in general (i.e., DAX; Deffenbacher,
Lynch et al., 2002) and in a recent frustrating driving situation. Conversely,
we predict that harmonious passion will not be associated with any indicatorof aggressive driving behavior.
MethodParticipants
A random sample of 458 participants (262 females, 193 males, 3 participants did not report their gender) from the Greater Montreal area in
the Province of Québec in Canada was used in this study. Participants
were between 20 and 87 years of age (M = 47.8 years, SD = 14.9 years). On
average, the participants had been driving for 27.9 years (SD = 13.7) anddrove an average of 17,473.66 km per year (SD = 14,411.34 km).
Measures
Driving Passion Scale (DPS). The DPS that we used in Study 1 was usedin Study 2 as well. Alphas for the sample of this study were .80 and .79 forPASSION AND AGGRESSIVE DRIVING BEHAVIOR

3029

the harmonious passion subscale and the obsessive passion subscale,respectively.
Aggressive driving behavior. The DAX (Deffenbacher, Lynch, Oetting
et al., 2002) that we used in Study 1 was also used in Study 2 to assess
aggressive driving behavior. However, to increase the response rate, we
reduced the number of items for each subscale. Items selected were the top
loading factors from a factorial analysis of all the items of the full DAX scalefrom the Study 1 data.
There were five items that comprised the verbal aggression subscale(a = .85), three items in the physical aggression subscale (a = .75), and three
items in the aggressive use of the vehicle subscale (a = .85). Correlations foreach of these short subscales with their full subscales are .85, .88, and .88,
respectively (correlations are from the Study 1 data). Thus, the shorter
subscales would appear to be equivalent to the full subscales.
Aggressive reactions in a recent frustrating driving situation. Participants
were asked to describe a recent frustrating driving situation involving
another driver. A scale comprised of eight items assessed participants’ aggressive reactions in that situation. Each item proposes a specific way to react ina frustrating situation, and participants were asked to rate the extent (in apercentage ranging from 0% to 100%) to which they reacted that way in theirrecent frustrating situation. Sample items are “I swore at the other driver,” or“I made hostile gestures to the other driver.” Alpha for this scale was .69.
Procedure
A total of 1,500 questionnaires with pre-stamped return envelopes weresent to the Société de l’Assurance Automobile du Québec (SAAQ), a provincial organization responsible for driving licenses in the Province of Québec.
The SAAQ then selected from their registering base a random sample of
1,500 individuals living in the Greater Montreal area. Each selected person
received by mail a questionnaire, along with a letter explaining the general
purpose of the study. Participants were told that the aim of this study is tolearn more from people’s driving behavior. They were assured that they were
free to participate or not, and that their answers would remain confidential,
anonymous, and would not be sent to the SAAQ. In all, 458 individuals (265females, 193 males) returned their questionnaires fully completed, for a
response rate of 31%.
Results and Discussion
Data were screened for gender differences on the passion subscales.
ANOVA results reveal that men were more likely to have a harmonious

3030 PHILIPPE ET AL.
Table 2
Partial Correlations Between the Two Types of Passion for Driving, Aggressive
Driving Behavior, and Aggressive Reactions in a Recent Specific Situation:
Study 2

Obsessive passiona
Harmonious
passionb

Verbalexpressionof aggression

Physical
expressionof aggression

Aggressive
use of thevehicleAggressive
reactionsin a recent
situation

.18**
-.02

.27**
-.04

.27**
-.06

.23**
-.04

Note. N = 442.
a
Controlling for harmonious passion. bControlling for obsessive passion.
**p < .01.

passion for driving (M = 4.28, SD = 1.28) than were women (M = 4.03,
SD = 1.19), F(1, 453) = 4.42, p < .05. There was no significant difference forthe obsessive passion subscale. Data were also screened for gender differences
across the DAX subscales. The ANOVA results reveal one significant difference: Men were more likely to display physical, aggressive behavior(M = 1.39) than were women (M = 1.24), F(1, 453) = 7.07, p < .01.
Partial correlations were computed among the passion and DAX subscales. In line with Study 1, the results show that obsessive passion was
positively associated with all three types of aggression ( prs between .18 and.27, p < .01). Conversely, harmonious passion was not associated with any
type of aggression. Partial correlations were also computed between passion
and the aggressive reactions in a recent frustrating driving situation. Obsessive passion was positively associated with aggressive reactions in a recent
situation ( pr = .23, p < .01), while harmonious passion was unrelated to it( pr = -.04; see Table 2).
The results from Study 2 corroborate those obtained in Study 1. Obsessive
passion was positively associated with aggressive driving behavior in general,
while harmonious passion was not. Of additional interest, Study 2 reveals
that these associations held true for a community-dwelling population of
middle-age drivers with the same instrument (i.e., DAX; Deffenbacher,
Lynch et al., 2002). More importantly, the results from Study 2 extend thoseof Study 1 by showing that obsessive passion was positively associated withaggressive behavior exhibited in a recent frustrating driving situation, whileharmonious passion was not.

PASSION AND AGGRESSIVE DRIVING BEHAVIOR

3031

These results suggest that aggressive driving behavior might arise whenobsessively passionate drivers are prevented from pursuing engagement intheir pleasant driving activity because of an obstacle, such as another driver’s
behavior. By contrast, harmoniously passionate drivers do not exhibit such amaladaptive behavior when they face an obstacle to pleasure in an activity.
These results are in line with past research on the dualistic model of passion(Ratelle et al., 2004; Rip et al., 2006; Rousseau et al., 2002; Vallerand et al.,2003) showing that only obsessive passion leads to rigid engagement andself-defeating behavior when facing obstacles to the pursuit of the passionate
activity. However, the present results also extend past research in showingthat such ill-advised behavior can be targeted at other people and not only
at oneself.

Study 3
Study 3 has two major purposes. First, it seeks to replicate the findings
from the previous studies, with two improvements. First, Studies 1 and 2 useda survey methodology to assess the relationship between passion and past
aggressive driving behavior. Such a strategy makes it impossible to determine
if some other variable is responsible for the obsessive-passion/aggressivedriving-behavior relationship.
Study 3 was conducted within a driving laboratory session, allowing us tocontrol for a number of biasing factors and to induce frustrating driving
obstacles. Second, Studies 1 and 2 used a self-report measure of aggressive
driving as outcome measures. Self-reports of aggressive driving might bebiased, as participants might be tempted to underestimate the frequency of
their aggressive behavior. In Study 3, an observable behavioral measure of
aggression while driving (through judges) is used. In line with Studies 1 and
2, it is predicted that obsessive passion will be associated with aggressive
driving behavior during a laboratory session when faced with induced frustrating events. It is also hypothesized that harmonious passion will not be
associated with aggressive driving behavior.
A second purpose of this study is to examine the role of anger as amediator of the obsessive-passion/aggressive-driving-behavior relationship.
Research (Deffenbacher et al., 2003; Deffenbacher, Lynch, Deffenbacher
et al., 2001; Deffenbacher, Lynch, Oetting, & Yingling, 2001) has suggested
that aggressive driving behavior might originate from anger when faced witha frustrating situation (e.g., being in a traffic jam, following a driver who
drives slowly). It is predicted that, when faced with frustrating driving situations, obsessive passion will lead to anger that, in turn, will lead to aggressive driving behavior. Thus, anger is expected to mediate the relation between

3032 PHILIPPE ET AL.
obsessive passion and aggressive driving behavior. Finally, it is hypothesizedthat harmonious passion will not be associated with anger.

MethodParticipants
A total of 44 young men highly interested in cars and in car driving wererecruited from the Greater Montréal area through advertisements on theInternet and within departments of a French-Canadian university. They were
between 18 and 35 years of age (M = 23.9 years, SD = 3.8), had been driving
an average of 6.9 years (SD = 3.7), and drove an average of 27,055.60 km per
year (SD = 12,446.35 km). Approximately half of the participants (48%) werefull-time students, while the other half were workers (52%). There was nodifference between students and workers on all variables (all Fs < 1.40).

Materials
Participants completed a task on a fixed-base laboratory driving simulator comprised of a complete automobile with fully functional pedals anddashboard. The driving environment was projected on a large screen showing
images of urban streets. The simulation environment was completely interactive and reproduced participants’ real-time behaviors. Each participant’s
driving session was audio-recorded and video-recorded.

Measures
Driving Passion Scale. The DPS that we used in the two previous studies
was also used in Study 3. Alphas in this study were .80 and .79 for the
harmonious passion and obsessive passion subscales, respectively.
Anger. We used three items (“To what extent did you feel irritated?”; “To
what extent did slow drivers make you angry?”; and “To what extent did you
feel provoked?”) to assess anger. These items were rated on a 5-point scaleranging from 1 (not at all) to 5 (totally). In Study 3, the alpha for this scale
was .69.
Self-reported aggressive driving behavior. A self-report questionnaire
comprised of six items assessed participants’ self-reported aggressive overt
behavior. Verbal and physical aggressive behavior (e.g., “I verbally insulted
other drivers”) was assessed on the level of manifestation on the following

PASSION AND AGGRESSIVE DRIVING BEHAVIOR

3033

5-point scale: 0 = no; 1 = I thought of doing the behavior; 2 = I thought about
doing it, but I didn’t try; 3 = I tried to do it; 4 = I did it. In this study, alpha forthis scale was .60.
Objective aggressive driving behavior. We had three judges independently
code the video and sound of participants’ overall driving sessions. Examplesof observed variables were the number of horn honks and their type (i.e.,
short or long); number of aggressive commentaries, along with their intensity, rated on a 5-point scale ranging from 1 (a little bit intense) to 5
(extremely intense); and number of hostile gestures toward the other driver,along with their intensity, rated on a 5-point scale ranging from 1 (a little bit
intense) to 5 (extremely intense).
All variables were transformed into z scores and were averaged for eachjudge. Correlations among judges were significant ( p < .001) and ranged
from .67 to .92. All three judges’ scores were averaged to yield one total score
representing the level of aggressive driving behavior during the laboratory
driving session (a = .93). High scores represent high levels of aggressive
driving behavior.

ProcedureFirst, participants were provided with an informed-consent form andwere told that they would be audio- and video-recorded and that they could
stop their participation at any time (with full compensation) during theexperiment. Second, participants completed the DPS and a sociodemographic inventory.
Afterward, all participants completed a standard driving-simulation task
consisting of a practice trial and the actual driving session recreating everyday, on-road trivial conditions and major obstacles. Participants were tested
individually, but each participant was led to believe that he would be interacting with another driver. In reality, the other driver was a confederate who
had been quickly introduced to participants as a second participant completing the task at the same time. This accomplice was perceived as the instigatorof some of the provocations that were to take place on the road. Participants
were told that they both had a different circuit in the simulation environment;that is, they were not in competition with each other, although at times theywould meet on the road. In addition, participants were further told that they
were driving to an important appointment and should try to arrive on time.
Green and red lights were presented in the simulation room in order toindicate if the participant was on time or late for his appointment. Participants were told that the red light indicated a delay over the mean timenormally necessary to reach the destination.

3034 PHILIPPE ET AL.
The practice trial consisted of driving on a free road without traffic orpedestrians for 10 min in order to get used to the car simulator and thesurrounding environment. In the following actual trial, the obstacles andprovocations were attributed to the erratic behavior of the confederate’s
assigned vehicle. One situation was the participant’s inability to pass theconfederate’s car. Indeed, this interactive car was programmed so as toaccelerate when participants attempted to pass it and to decelerate whenparticipants were behind. Another road obstacle pertained to a situation inwhich participants were stuck behind an immobile truck, while other cars
were passing in the adjacent left lane.
In addition, in order to create a situation similar to everyday driving
events, participants also heard horn honking from behind their vehicle. Eachof these two frustrating situations took place four times in sequence, interspersed by 1 min of free road driving equivalent to the practice trial. Participants’ behaviors were audio- and video-recorded in order for independentjudges to score the aggressive behavior.
After completing the task, participants were administered the aggressive
driving behavior and anger self-report scales. They were then fully debriefed
and received $20 as compensation for their participation.
Results and Discussion
In light of the findings from Studies 1 and 2, a one-tailed significance test
was used for all analyses. Our first hypothesis was that obsessive passion
would be positively associated with aggressive driving behavior. The resultsfrom partial correlations confirm our hypothesis, as only obsessive passion
was positively and significantly associated with both the self-report (r = .29,
p < .05) and observed measures of aggressive driving behavior (r = .28,
p < .05). Harmonious passion was not associated with any of these measures(see Table 3). These findings support our first hypothesis.
The second hypothesis was that anger experienced by drivers would
mediate the relation between obsessive passion and aggressive driving behavior. It was also predicted that harmonious passion would not be associatedwith anger. To test this hypothesis, we computed a path analysis throughhierarchical regression, in line with Baron and Kenny’s (1986) recommendations. Self-reported aggressive driving behavior served as the dependent
variable and was regressed on the two types of passion at Step 1. The results
reveal that obsessive passion predicted significantly self-reported aggressive
behavior (b = .37, p < .05, one-tailed), while harmonious passion did not(b = -.05, ns).
At Step 2, anger was added to the regression equation. The results revealthat anger was the only significant predictor of self-reported aggressive

PASSION AND AGGRESSIVE DRIVING BEHAVIOR

3035

Table 3
Correlations and Partial Correlations Between the Two Types of Passion for
Driving and Anger, Aggressive Behavior Self-Report, and Objective Measure:
Study 3Obsessive passion: partial
correlationa
Harmonious passion: partial
correlationb
Aggressive behavior (self-report)
Aggressive behavior (objective
measure)Anger

Self-reportof aggressive
behavior

Objective
measure of
aggressive
behavior

pr = .29*

pr = .29*

pr = .28*

pr = .01

pr = -.02

pr = -.06

r = .46*
r = .34*——

r = .47*—

Note. N = 44.
aControlling for harmonious passion. bControlling for obsessive passion.
*p < .05 (one-tailed).

behavior (b = .43, p < .05, one-tailed), obsessive passion being fully mediated(b = .22, ns). Harmonious passion was again not significantly related to selfreported aggressive behavior (b = -.05, ns; see Figure 1).
In addition, in line with Shrout and Bolger’s (2002) recommendations totest mediation effects with a small sample size (also see Efron & Tibshirani,
1993; Preacher & Hayes, 2004), a bootstrap sample of 1,000 cases wascreated. The results show that bias-corrected bootstrap 90% confidence intervals (CIs) did not include 0 (CIs = .0035, .0788), thus suggesting that themediation effect was significant ( p < .05, one-tailed). The results of the effectproportion mediated ratio (PM; see Shrout & Bolger, 2002) show that 70% of
the total effect was mediated by anger.
Finally, the same hierarchical regression was computed, with objective
aggressive driving behavior serving as the dependent variable, and was
regressed on the two types of passion at Step 1. At Step 2, anger was added
to the regression equation. The results reveal that obsessive passion positively
predicted objective aggressive behavior at Step 1 (b = .35, p < .05, one-tailed),
while harmonious passion did not (b = -.07, ns). However, at Step 2, theresults reveal that anger was the only significant predictor of objective aggressive behavior (b = .26, p < .05, one-tailed), obsessive passion being fully mediated (b = .21, ns). Harmonious passion was again not significantly related to3036 PHILIPPE ET AL.

Figure 1. Beta coefficients for the pathways among the two types of passion, anger, and selfreported aggressive driving behavior. *p < .05 (one-tailed). The dashed line indicates a nonsignificant path.

Figure 2. Beta coefficients for the pathways among the two types of passion, anger, and objective aggressive driving behavior. *p < .05 (one-tailed). The dashed line indicates a nonsignificant
path.

aggressive behavior (b = -.07, ns; see Figure 2). Probing of the mediation
effect shows that it was significant ( p < .05; bias-corrected bootstrap 90%
CIs = .0036, .0739). The results of the effect proportion mediated ratio showthat 47% of the total effect was mediated by anger.
Taken as a whole, the present results support our hypotheses. First, thefindings show that obsessive passion for driving was associated with the
manifestation of aggressive driving behavior when faced with induced frus-

PASSION AND AGGRESSIVE DRIVING BEHAVIOR

3037

trating driving situations in a controlled environment. Harmonious passion
was unrelated to aggressive driving behavior. These findings replicate thoseobtained in Studies 1 and 2. Furthermore, these findings were obtained withboth self-report and observable behavioral measures of aggression. Second,
the results show that when participants were faced with frustrating driving
situations, anger was a mediator between obsessive passion and both selfreport and objective aggressive driving behavior, while harmonious passion
was not associated with anger.

General Discussion
The purpose of the present research was to examine the relationshipbetween passion and aggressive driving behavior. It is the first research to do
so. A number of findings emerged. First, the results from all three studies
reveal that an obsessive passion for driving was associated with aggressive
behavior, while a harmonious passion for driving was unrelated to aggressive
behavior. Second, the findings also uncovered that these relationships held
true in three types of context: in general (through the DAX; Studies 1 and 2);
in the report of a recent, real-life frustrating driving event (Study 2); andwhen frustrating events were induced under controlled laboratory conditions(Study 3). Finally, the results of Study 3 show that when participants were
faced with frustrating events, anger mediated the relationship between obsessive passion and aggressive driving behavior. It is interesting to note that thislatter result was obtained with both self-report and objective measures ofaggression.
A first implication of the present findings is that they strongly support
the applicability of the dualistic model of passion (Vallerand et al., 2003) toaggressive driving behavior. The present research supported the conceptual
validity of the constructs of harmonious passion and obsessive passion for
driving. Specifically, Study 1 confirmed the bifactorial structure validity ofthe scale with a confirmatory factor analysis. Furthermore, the internal reliability of the scale was shown to be adequate across all three studies. A
second point dealing with support for the dualistic passion model is that,
overall, the two types of passion were found to lead to different outcomeswith respect to driving behavior. The results systematically show thatobsessive passion positively predicted verbal and physical aggression whendriving, and aggressive use of the vehicle. Harmonious passion was neverfound to be associated with these negative outcomes. Furthermore, as mentioned previously, these relationships held true in a variety of situations andwith various samples. Therefore, these findings would appear to be rather
robust.

3038 PHILIPPE ET AL.
A second implication of the present results is that they show that anger
mediated the obsessive-passion/aggressive-driving-behavior relationship. If
much research has focused on the role of anger in aggressive driving behavior(e.g., Deffenbacher et al., 2003; Deffenbacher, Lynch, Deffenbacher et al.,
2001; Deffenbacher, Lynch, Oetting, et al., 2001), little research has examined the nature of the determinants of anger (to this effect, see Smart,
Stoduto, Mann, & Adlaf, 2004).
The dualistic model of passion provides a theoretical framework to
account for anger while driving and aggressive driving behavior. When theactivity of driving is thwarted—such as in a traffic jam or when behind a slow
driver—this interferes with the pleasure of the activity. When obsessively
passionate, the person wants to pursue activity engagement because of aninternal compulsion that comes to control him or her. Within such a state,being prevented from engaging in the activity by an external agent is conducive to anger toward this agent (Roseman & Smith, 2001; Scherer, 2001;
Smith & Lazarus, 1993), thereby leading to maladaptive aggressive behavior.
Conversely, harmonious passion is not bred by an uncontrolled urge toengage in the activity, as the latter is engaged in out of choice. The person canthen engage in self-regulation. In such a condition, the person might be able
to control the experience of frustration when facing driving obstacles. Therefore, little or no anger is elicited, and no maladaptive aggressive behavior
is exhibited. The results from Study 3 provide support for this sequence.
Specifically, Study 3 replicated past findings showing that anger leads toaggressive driving behavior (Deffenbacher, et al., 2003; Deffenbacher,
Lynch, Deffenbacher et al., 2001; Deffenbacher, Lynch, Oetting et al., 2001).
However, Study 3 also reveals that only obsessive passion may lead to anger
while driving, which, in turn, is conducive to aggressive driving behavior.
Additional research is needed to better understand the role of harmonious
passion in eliciting coping mechanisms that may prevent the experience ofanger and aggressive driving behavior.
Another contribution of the present research is that Study 3 is one of the
few studies to assess aggressive driving behavior in a laboratory setting withthe use of a driver simulator. It is also the first to use judges to observe
objective aggressive driving behavior. These methodological procedures
provide strong support to the validity and reliability of the relationshipobserved between obsessive passion and aggressive driving behavior, and forthe role of anger as a mediator of this relationship.
A last point concerns the measurement of aggression in driving. An
important issue in the aggressive driving literature is the use of self-report(Lajunen & Summala, 2003). This methodology may be seen as questionablefrom a social desirability point of view. Study 3 shows that both self-reportand observable measures of aggression were positively associated with obses-

PASSION AND AGGRESSIVE DRIVING BEHAVIOR

3039

sive passion and anger elicitation. Thus, another important contribution of
Study 3 is to provide evidence that self-reports appear to represent valid
indicators of aggressive driving behavior. While this may be so, it is also
possible that participants might have been more inclined to be honest in theirreporting of aggressive behavior, knowing that they were being videorecorded. Additional research is needed on this issue.
Some limitations of the present research must be underscored. A firstlimitation is that the present research dealt with aggressive driving reactions
to frustrating driving situations, and did not specifically address road rage;that is, violent driving behavior. Therefore, the present results might notnecessarily apply to road-rage behavior. Additional research on this issue isrequired. A second limitation is that only a self-report measure of anger wasused in Study 3. Ideally, it might be preferable in future research to use
physiological and behavioral indicators of anger in order to avoid social
desirability and measurement problems associated with the self-report ofemotions. A third limitation is that the sample used in Study 3 was relatively
small and was composed only of males. In future research, larger samples ofparticipants of both genders should be recruited in order to conduct morerobust structural equation modeling analyses and firmly replicate the present
findings.
A fourth limitation is that the present research cannot rule out an alternative explanation for the present results. Indeed, with obsessive passion,
people might engage in driving because it may act to reduce tension. Therefore, people might engage in high-speed or risky behaviors in order to reduce
tension (e.g., anger). Thus, facing obstacles might only exacerbate anger that
already exists. Therefore, although with both types of passion, people value
and like the passionate activity at similarly high levels, the reasons why
they engage in the passionate activity might differ. While with harmonious
passion, people might engage in driving because they enjoy the activity foritself; with obsessive passion, people might engage in driving because they
enjoy the fact that driving reduces their tension. One way to verify this
explanation would have been to use a baseline measure of anger in Study 3 ora measure of trait anger. However, we did not use such measures. Future
research should use either a baseline level of anger or should control for trait
anger in order to shed light on this issue.
Despite the aforementioned limitations, the present research offers preliminary information regarding the role of passion—especially that of obsessive passion—in aggressive driving behavior. Furthermore, the findings
suggest that anger mediates the impact of obsessive passion on aggressive
driving. Future research is needed to establish more firmly the psychologicalprocesses allowing harmonious passion to remain unrelated to aggressive
driving behavior.

3040

PHILIPPE ET AL.

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