We often form opinions about the characteristics of others from single, static samples of their appearance --the very first thing we see when, or even before, we meet them. These inferences occur spontaneously, rapidly, and can impact decisions in a variety of important domains. A crucial question, then, is whether appearance-based inferences are accurate. Using a naturalistic data set of more than 1 million appearance-based judgments obtained from a popular website (Study 1) and data from an online experiment involving over a thousand participants (Study 2), we evaluate the ability of human judges to infer the characteristics of others from their appearances. We find that judges are generally less accurate at predicting characteristics than they would be if they ignored appearance cues and instead only relied on their knowledge of characteristic base-rate frequencies. The findings suggest that appearances are overweighed in judgments and can have detrimental effects on accuracy. We conclude that future research should (i) identify the specific visual cues that people use when they draw inferences from appearances, (ii) determine which of these cues promote or hinder accurate social judgments, and (iii) examine how inference goals and contexts moderate the use and diagnostic validity of these cues.
ACCEPTED MANUSCRIPTFooled by First Impressions 2 "Beware, as long as you live, of judging people by appearances." --The Cockerel, the Cat, and the Young Mouse (Jean de La Fontaine, 1668/1974 Despite the old adage warning us not to "judge a book by its cover," we often form opinions about the characteristics of others from single, static samples of their appearance --the very first thing we see when, or even before, we meet them (Hassin & Trope, 2000; Todorov, Said, Engell, & Oosterhof, 2008;Zebrowitz, 1996). These inferences occur spontaneously and rapidly (Ballew & Todorov, 2007;Bar, Neta, & Linz, 2006;Rule & Ambady, 2008a; Todorov, Pakrashi, & Oosterhof, in press; Willis & Todorov, 2006). Furthermore, recent evidence suggests that these impressions impact the decisions that people make in a variety of important domains, including mate choice , politics (for reviews of this literature see: Hall, Goren, Chaiken, & Todorov, 2009; Olivola & Todorov, in press), business/finance (Gorn, Jiang, & Johar, 2008;Naylor, 2007;Pope & Sydnor, 2008;Ravina, 2008;Rule & Ambady, 2008b), law/forensic-science (Blair, Judd, & Chapleau, 2004;Eberhardt, Davies, Purdie-Vaughns, & Johnson, 2006; Zarkadi, Wade, & Stewart, in press;Zebrowitz & McDonald, 1991), and the military (Mueller & Mazur, 1996).A crucial question, then, is whether appearance-based inferences are valid forms of social judgment. That is, can we use appearances to determine a target-person's characteristics, or are we being fooled by first impressions? The answer to this question has serious and wide-ranging implications. The widespread use of visual media and the growing popularity of the Internet mean that appearances are increasingly the first cues
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