Despite the common lay assumption that males and females are profoundly different, Hyde (2005) used data from 46 meta-analyses to demonstrate that males and females are highly similar. Nonetheless, the gender similarities hypothesis has remained controversial. Since Hyde's provocative report, there has been an explosion of meta-analytic interest in psychological gender differences. We utilized this enormous collection of 106 meta-analyses and 386 individual meta-analytic effects to reevaluate the gender similarities hypothesis. Furthermore, we employed a novel data-analytic approach called metasynthesis (Zell & Krizan, 2014) to estimate the average difference between males and females and to explore moderators of gender differences. The average, absolute difference between males and females across domains was relatively small (d = 0.21, SD = 0.14), with the majority of effects being either small (46%) or very small (39%). Magnitude of differences fluctuated somewhat as a function of the psychological domain (e.g., cognitive variables, social and personality variables, well-being), but remained largely constant across age, culture, and generations. These findings provide compelling support for the gender similarities hypothesis, but also underscore conditions under which gender differences are most pronounced.
When people high in prejudice censor prejudice in one setting, they can experience a prejudice rebound effect-subsequently responding with more prejudice than otherwise. Disparagement humor fosters the release rather than suppression of prejudice. Thus, two experiments tested the hypothesis that exposure to disparagement humor attenuates rebound effects. Participants suppressed prejudice by writing fewer anti-gay thoughts about same-sex adoption (Experiment 1) or by reporting greater support for same-sex civil rights (Experiment 2) when expecting to share their responses with others (non-prejudice norm condition) but not if others first exchanged anti-gay jokes (prejudice norm condition). High-prejudice participants then exhibited prejudice rebound in the non-prejudice norm condition only. They rated a gay man more stereotypically (Experiment 1) and allocated greater budget cuts to a gay student organization (Experiment 2) in the non-prejudice norm condition.
Replies to comments by Zuriff (see record 2015-45553-009) on the original article by Zell et al. (see record 2015-00137-002). The authors appreciate the commentary on their report by Zuriff (2015, this issue) and welcome the opportunity to discuss several important issues that he raises.
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