FlashReport Building blocks of bias: Gender composition predicts male and female group membersevaluations of each other and the group Tessa V. West a, , Madeline E. Heilman a , Lindy Gullett a, 1 , Corinne A. Moss-Racusin b, 1 , Joe C. Magee a a New York University, NY, USA b Yale University, CT, USA abstract article info Article history: Received 22 February 2012 Revised 4 April 2012 Available online 1 May 2012 Keywords: Group processes Intergroup relations Stereotyping The present research examined how a group's gender composition inuences intragroup evaluations. Group members evaluated fellow group members and the group as a whole following a shared task. As predicted, no performance differences were found as a function of gender composition, but judgments of individualstask contributions, the group's effectiveness, and desire to work with one's group again measured at a 10-week follow-up were increasingly negative as the proportion of women in the group increased. Negative judgments were consistently directed at male and female group members as indicated by no gender of target effects, demonstrating that men, simply by working alongside women, can be detrimentally affected by negative stereotypes about women. Implications for gender diversity in the workplace are discussed. © 2012 Elsevier Inc. All rights reserved. Introduction Research consistently indicates that gender affects judgments in work settings. Perceptions of women's incompetence and negative evaluations of their performance arise from the belief that women are decient in the male stereotyped agentic attributes (e.g., ambitious, competitive) that are required for success in male sex-typed roles (Eagly & Karau, 2002; Heilman, 2001; Rudman, Moss-Racusin, Phelan, & Nauts, 2012). This negative effect of gender stereotypes can persist even in the presence of disconrming behavioral evidence (Foschi, 1996). Judgments of work groups also are affected by gender such that gender-diverse task groups are perceived as less effective than are task groups with more men (Baugh & Graen, 1997). The study reported here addresses how gender composition of task groups affects intragroup processes; namely, membersevaluations of male and female group members and the group as a whole. Unlike past research, our focus is not on third party evaluations of group members, but rather on group membersevaluations of each other. It would not be surprising if the performance of female group members was negatively evaluated within work groups composed of more women than men, particularly on male gender-typed tasks for which there is a lack of t between the attributes women are thought to embody and the attributes believed to be required for success. However, we propose that a group composed of more women than men can also negatively affect how male group members are evaluated. Two different streams of research lead us to this prediction. For one, when completing a male-typed task for which gender stereotypes are relevant, it is possible that in femaledominated groups, stereotypes about women's deciencies in agentic attributes leakinto evaluations of men when those men are working interdependently with women, thereby detrimentally affecting views of their competence and performance effectiveness. This idea is consistent with research demonstrating that when there is a high degree of entitativity between stigmatized and non-stigmatized persons (e.g., shared outcomes and common goals), a stigma-by-associationeffect occurs whereby non- stigmatized persons are ascribed stereotypical traits of the stigmatized persons (Pryor, Reeder, & Monroe, 2012). It is also consistent with the nding that men are perceived to be decient in agentic attributes when working in femaledominated occupations and job contexts (Heilman & Wallen, 2010). Alternatively, the proportion of stereotyped individuals in a group (in this case women) might be an emergent property of the group itself, which may color the perceptions and experiences of its members. As the number of women in a group increases, the views of the group as a whole may change in a way that is consistent with negative stereotypes about women in the workplace, and lter down to perceptions of group memberswhether male or female. This idea is consistent with prior work demonstrating that group- level category memberships can shape individual group members judgments of the group as a whole and each other, above and beyond those individualsown category memberships (Gaertner & Dovidio, 2000; Hewstone & Brown, 1986). However, whereas that research has historically been concerned with examining the evaluative benets of positively valued group-level category membership on Journal of Experimental Social Psychology 48 (2012) 12091212 Corresponding author at: Department of Psychology, New York University, 6 Washington Place, New York, NY 10003, USA. E-mail address: tessa.west@nyu.edu (T.V. West). 1 Order of authorship by alphabetical order. 0022-1031/$ see front matter © 2012 Elsevier Inc. All rights reserved. doi:10.1016/j.jesp.2012.04.012 Contents lists available at SciVerse ScienceDirect Journal of Experimental Social Psychology journal homepage: www.elsevier.com/locate/jesp