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Review
. 2020 Feb;146(2):118-149.
doi: 10.1037/bul0000218. Epub 2019 Dec 2.

The better-than-average effect in comparative self-evaluation: A comprehensive review and meta-analysis

Ethan Zell  1 , Jason E Strickhouser  2 , Constantine Sedikides  1 , Mark D Alicke  1
Affiliations
Review

The better-than-average effect in comparative self-evaluation: A comprehensive review and meta-analysis

Ethan Zell et al. Psychol Bull. 2020 Feb.

Abstract

The better-than-average-effect (BTAE) is the tendency for people to perceive their abilities, attributes, and personality traits as superior compared with their average peer. This article offers a comprehensive review of the BTAE and the first quantitative synthesis of the BTAE literature. We define the effect, differentiate it from related phenomena, and describe relevant methodological approaches, theories, and psychological mechanisms. Next, we present a comprehensive meta-analysis of BTAE studies, including data from 124 published articles, 291 independent samples, and more than 950,000 participants. Results indicated that the BTAE is robust across studies (dz = 0.78, 95% CI [0.71, 0.84]), with little evidence of publication bias. Further, moderation tests suggested that the BTAE is larger in the case of personality traits than abilities, positive as opposed to negative dimensions, and in studies that (a) use the direct rather than the indirect method, (b) involve many rather than few dimensions, (c) sample European Americans rather than East-Asians (especially for individualistic traits), and (d) counterbalance self and average peer judgments. Finally, the BTAE is moderately associated with self-esteem (r = .34) and life satisfaction (r = .33). Results from selection model analyses clarify areas of the BTAE literature in which publication bias may be of elevated concern. Discussion highlights theoretical and empirical implications. (PsycINFO Database Record (c) 2020 APA, all rights reserved).

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