Consumer Responses to Alcohol Warnings

Not Applicable

Completed

• Conditions: Alcohol Drinking

• Registration Number: NCT06159647
• Lead Sponsor: Stanford University

Brief Summary

The primary objective is to evaluate whether alcohol warnings about different topics elicit higher perceived message effectiveness than control messages. The secondary objective is to evaluate whether alcohol warnings about different topics elicit higher reactance than control messages.

Detailed Description

Participants will complete a within-subjects online randomized experiment in which they will view and rate messages on the risk of alcohol consumption. Participants will view and rate 12 messages total: 10 warning messages and 2 control messages. They will rate each message on perceived message effectiveness (primary outcome) and message reactance (secondary outcome). The 10 warning messages will be about 5 different warning topics (i.e., 2 messages per topic) and the 2 control messages will be about 1 control topic (2 messages per topic). In this within-subjects experiment, the survey will present the topics in random order and the messages within each topic in random order.

Study Timeline

• Study First Submitted: 2023-11-27
• Study First Submitted QC: 2023-12-05
• Study First Posted: 2023-12-07
• Study Start: 2024-01-18
• Primary Completion: 2024-01-26
• Study Completion: 2024-01-26
• Status Verified: 2024-02
• Last Update Submitted: 2024-02-09
• Last Update Posted: 2024-02-13

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 2522

Inclusion Criteria

• Age 21 and older
• Reside in the United States
• Able to complete a survey in English

Exclusion Criteria

• Under 21 years of age
• Reside outside the United States
• Unable to complete a survey in English

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Primary Outcome Measures

Name	Time	Method
Perceived message effectiveness	The survey will take up to 20 minutes.	The study will assess perceived message effectiveness using 1 item: "How much does this message discourage you from wanting to drink alcohol?" Response options will range from "not at all" (coded as 1) to "a great deal" (coded as 5). Higher scores indicate more perceived message effectiveness.

Secondary Outcome Measures

Name	Time	Method
Reactance	The survey will take up to 20 minutes.	The study will assess reactance using 1 item: "Say how much you disagree or agree with this statement: This message exaggerates the health effects of alcohol." Response options will range from "strongly disagree" (coded as 1) to "strongly agree" (coded as 5). Higher scores indicate more reactance.

Trial Locations

Locations (1)

Online study; 🇺🇸 Palo Alto, California, United States