Methodological requirements to test a possible in-group advantage in judging emotions across cultures: Comment on Elfenbein and Ambady (2002) and evidence.

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Abstract
H. A. Elfenbein and N. Ambady's (2002) conclusions concerning a possible in-group advantage in judging emotions across cultures are unwarranted. The author discusses 2 methodological requirements for studies to test adequately the in-group advantage hypothesis and an additional requirement in reviewing multiple judgment studies and examining variance in judgment effects across those studies. The few studies that Elfenbein and Ambady reported that support the in-group advantage hypothesis need to be examined for whether they meet the criteria discussed; if they do not, their data cannot be used to support any contention of cultural differences in judgments, let alone the in-group advantage hypothesis. Furthermore, the role of signal clarity needs to be explored in possibly moderating effects across studies; however, this was not done.