Effects of personal attributes, risk perception and risk literacy on COVID-19 vaccination
Daisuke Kudo (Tokaigakuin University) & Yang Li (Nagoya University)
mail: dkudo@tokaigakuin-u.ac.jp, URL: http://dicek.net/
BackgroundResults & Discussions

a. Vaccination has been progressing under the COVID-19 pandemic.
b. Vaccination may play a role in controlling COVID-19 pandemics, but negative attitudes
toward vaccines are as prevalent as they have been for other vaccines (e.g., influenza).
c. According to the IPSOS (2020) international survey, Japan ranked 4th highest aversive
attitude among the countries participating in the survey, following Russia and France.
d. Some previous studies focused on the attributes of participants (Tsuchida et al., 2021),
and others examined them from the perspective of social class and personality (Murphyet al., 2021), but the total number of such studies is small.

Variables
GenderAge
Residence Area
Education
Marital Status
Child/Children
IncomeUse of public transportation
Risk perception of COVID-19
Knowledge of COVID-19 Vaccine
Risk perception of COVID-19 Vaccine
Media contact
Optimism for COVID-19Risk aversion
Risk literacy: Zero risk
Risk literacy: Benefit tradeoff
Risk literacy: Risk tradeoff
Risk literacy: Risk paradox
Risk literacy: Basic knowledge
Risk literacy: Risk bias

Objectives
a. Based on previous research on reputational risks after the Tohoku Earthquake (Kudo andNakayachi, 2014), in this study, we considered the aversive attitude toward vaccination
as overestimation of risk.
b. We focused on risk perception and risk literacy based on the dual process theory (e.g.,Stanovich & West, 2001) and its related theories.
c. The purpose of this study is to examine the impact of these factors (e.g., risk perceptionof COVID-19/COVID- 19 vaccine, optimism, risk aversion, knowledge of COVID-19 vaccine,risk literacy) on vaccination.

R2 = .449**

Methodsa. In December 2020, when the discussion of vaccination among Japan attracted attention,
we conducted an online survey of 425 Japanese general adults.
b. Independent variables included demographic variables, risk perception of COVID-19
infection, risk perception of the COVID-19 vaccine, optimism about COVID-19, risk
aversion, and risk literacy.
c. Dependent variable is intention to vaccinate with COVID-19 vaccine.

β.008
.019
.000
-.018
.093+
.046
.036
.056
.066
-.038
-.589**.067+-.189**-.080*
-.017
.122*
.078
-.053
.083+
-.063

95% Lower-0.085-0.081-0.075-0.092-0.015-0.061-0.048-0.021-0.050-0.120-0.668-0.013-0.300-0.158-0.1330.020-0.024-0.142-0.009-0.17995% Upper
0.102
0.119
0.074
0.057
0.200
0.153
0.119
0.133
0.182
0.043
-0.5110.146-0.077-0.003
0.100
0.225
0.181
0.037
0.175
0.054

VIF
1.373
1.516
1.036
1.089
2.402
2.281
1.280
1.105
2.436
1.199
1.193
1.193
2.459
1.116
2.180
1.427
1.345
1.616
1.334
2.000

†p < .10, *p < .05, **p < .01

a. Risk perception of COVID-19 did not directly promote vaccination intention, but risk
perception of the vaccine suppressed vaccination intention.
b. In terms of risk literacy, the more basic knowledge one has on risk, and the more familiar
one is with the trade-off between risk and benefit, the higher the vaccination intention is.
c. Optimism for COVID-19 and perceived risk of the vaccine were suggested as negative
incentive for COVID-19 vaccination.

2021 Biennial Conference of Asian Association of Social Psychology. Copyright © 2021 Daisuke Kudo & Yang Li. All rights reserved.