Biphasic Effects of Acute Alcohol Intoxication on Bystander Intervention

Study Overview
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Brief Summary
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The goal of this experimental study is to examine the effect of alcohol, gender, and bystander attitudes on bystander barriers and sexual violence intervention among young adult men and women (age 21-20). The main questions it aims to answer are: Does alcohol intoxication and gender influence bystander barriers and sexual violence intervention? Does alcohol intoxication have a greater impact on bystander barriers and sexual violence intervention among men, compared to women? Does alcohol intoxication have a greater impact on bystander barriers and sexual violence intervention among those with higher, compared to lower, prosocial bystander attitudes? Participants will be randomly assigned to one of two beverage conditions (alcohol or control beverage) and those assigned to alcohol will complete the study on either the ascending or descending alcohol limb. Participants will project themselves into a heat-of-the moment, risky sexual violence scenario that will assess bystander barriers and behavioral intentions. Researchers will compare those assigned to the alcohol and control beverage condition and men/women to see if this impacts bystander barriers and sexual violence intervention.

Official Title
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Biphasic Effects of Acute Alcohol Intoxication on Bystander Intervention for Sexual Violence

Conditions
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Alcohol Intoxication

Intervention / Treatment
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* Behavioral: Alcohol Intoxication- Ascending Limb
* Behavioral: Alcohol Intoxication- Descending Limb
* Behavioral: No Alcohol Control


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Between the ages of 21 and 30 Report that on at least 3 days in the past year they have consumed an alcohol quantity on a single occasion that was equal or greater to the dose administered in the lab Exclusion Criteria: Currently seeking treatment or in recovery for an alcohol or substance use disorder A medical condition or medication use in which alcohol consumption is medically contraindicated Pregnant, nursing, or has engaged in sexual intercourse without effective contraception in the past two weeks If the participant is less than six feet tall and weighs over 250 pounds or is over six feet tall and weighs over 300 pounds

Ages Eligible for Study
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Minimum Age: 21 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Alcohol Intoxication<br>Participant will receive alcohol, the dose of which will be administered to result in a breath alcohol concentration of .08%. | Behavioral: Alcohol Intoxication- Ascending Limb<br>* Participants will be assigned to moderate alcohol dose condition (target breath alcohol concentration .08%) with NIAAA approved alcohol administration procedures and complete the study task on the ascending limb<br>Behavioral: Alcohol Intoxication- Descending Limb<br>* Participants will be assigned to moderate alcohol dose condition (target breath alcohol concentration .08%) with NIAAA approved alcohol administration procedures and complete the study task on the descending limb<br>|
| Active Comparator: No-Alcohol Control<br>Participant will receive a no alcohol control beverage, therefore their breath alcohol concentration will be .00%. | Behavioral: No Alcohol Control<br>* Participants will be assigned to a no alcohol control condition<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Articulated Thoughts of Barriers to Bystander Intervention | Participants will verbally respond to a heat-of-the-moment scenario where they are a bystander of a risky alcohol-related sexual violence situation using the articulate thoughts in simulated situations paradigm [Davidson et al., 1983]. | 35 minutes to 2.5 hours post-drinking | 
| Articulated Thoughts of Intentions to Intervene as a Bystander | Participants will verbally respond to a heat-of-the-moment scenario where they are a bystander of a risky alcohol-related sexual violence situation using the articulate thoughts in simulated situations paradigm [Davidson et al., 1983] | 35 minutes to 2.5 hours post-drinking |