Table 1.

Description of Experimental Manipulations

Condition	Description	n
F1: Direct confrontation	It seems you didn’t like the ad. There are other people who also did not like the ad. Experts have studied these people. The experts have found that these people are very childish.	29
F2: Indirect Confrontation	It seems you didn’t like the ad. Please click the top 3 reasons why you feel this way. Then, the computer will analyze your responses and give you feedback. 1. The actors were fake 2. The actors said things that were not true 3. The ad did not make sense 4. The ad was fake 5. The ad was too serious 6. The ad was not well made 7. The ad did not give enough information about marijuana 8. The ad was confusing 9. The ad gave stupid reasons for not using marijuana 10. The ad was boring	38
	Participants selected 3 reasons, and were then told the following: “We asked some experts to look at the same ad you did. They studied the different reasons people could have for liking the ad. The experts all graded the reasons you picked as childish.”
F3: Attributional Reasoning	It looks like you didn’t like the ad. Now please list 8 reasons why you think the ad was bad.	34

Note. F = Feedback. True random assignment was used in this experiment. The number of participants that received each experimental condition is represented in the far right column.