This is the accepted version of the following article: Sacchi, S., Rusconi, P., Bonomi, M., & Cherubini, P. (2014) When examining social targets, people may ask asymmetric questions, that is, questions for which "yes" and "no" answers are neither equally diagnostic nor equally frequent. The consequences of this information-gathering strategy on impression formation deserve empirical investigation. The present work explored the role played by the trade-off between the diagnosticity and frequency of answers that follow asymmetric questions. In Study 1, participants received answers to symmetric/asymmetric questions on an anonymous social target. In Study 2, participants read answers to a specific symmetric/asymmetric question provided by other group members. Overall, the results of both studies indicate that asymmetric questions had less impact on impressions than did symmetric questions, suggesting that individuals are more sensitive to data frequency than diagnosticity when forming impressions..
Keywords: hypothesis testing, asymmetry, diagnosticity, confirmation bias ASYMMETRY AND IMPRESSION FORMATION 3
Effects of asymmetric questions on impression formation: A trade-off between evidence diagnosticity and frequencyWhen we develop initial impressions of unknown others, we can observe their attitudes and behaviors in their social context or we can ask questions to obtain additional information (e.g., Snyder & Swann, 1978). Despite the ecological relevance of the social hypothesis-testing process, people might be prone to inefficiencies while searching for new evidence that causes them to perceive their prior assumptions (i.e., hypotheses) as more (or less) likely than they actually are (e.g., McKenzie, 2004;Nickerson, 1998;Trope & Liberman, 1996). Such an unwarranted confidence in the hypothesis being tested (i.e., the focal hypothesis) has been termed confirmation bias (e.g., Klayman, 1995;McKenzie, 2004;Nickerson, 1998). Confirmation bias would emerge not only in the way in which people evaluate incoming data but also in the previous stage of the impression-formation process, namely, information gathering, which is when people may seek onesided information that is partial to initial assumptions (Nickerson, 1998).The main purpose of the present study is to investigate the effects of a particular information search strategy, i.e., the asymmetric strategy (Cameron & Trope, 2004;Trope & Thompson, 1997), on impression formation. Gathering information on social targets asymmetrically entails asking queries for which affirmative and negative replies have different effects on judgment and impression formation. Thus, for example, discovering that a person previously spent time in prison easily leads us to think him/her to be dishonest, whereas we do not necessarily judge a person as honest if we know that he/she was never in prison. We aim to analyze the relationship between exposure to answers obtained through asymmetric questions and the tendency to confirm a social hypothesis. More specifically, our interest is in cl...