Research comparing the leadership styles of women and men is reviewed, and evidence is found for both the presence and the absence of differences between the sexes. In contrast to the gender-stereotypic expectation that women lead in an interpersonally orientedstyle and men in a task-oriented style, female and male leaders did not differ in these two styles in organizationalstudies. However, these aspects of leadership style were somewhat gender stereotypic in the two other classes of leadership studies investigated, namely (a) laboratory experiments and (b) assessment studies, which were defined as research that assessed the leadership styles of people not selected for occupancy of leadership roles. Consistent with stereotypic expectations about a different aspect of leadership style, the tendency to lead democratically or autocratically, women tended to adopt a more democratic or participative style and a less autocratic or directive style than did men. This sex difference appeared in all three classes of leadership studies, including those conducted in organizations. These and other findings are interpreted in terms of a social role theory of sex differences in social behavior.In recent years many social scientists, management consultants, and other writers have addressed the topic of gender and leadership style. Some authors with extensive experience in organizations who write nontechnical books for management audiences and the general public have argued for the presence of sex differences in leadership style. For example, Loden (1985) maintained that there is a masculine mode of management characterized by qualities such as competitiveness, hierarchical authority, high control for the leader, and unemotional and analytic problem solving. Loden argued that women prefer and tend to behave in terms of an alternative feminine leadership model characterized by cooperativeness, collaboration of managers and subordinates, lower control for the leader, and problem solving based on intuition and empathy as well as rationality. Loden's writing echoes the androgynous manager theme developed earlier by Sargent (198 l), who accepted the idea that women and men, including those who are managers in organizations, behave stereotypically to some extent. Sargent advocated that managers of each sex adopt "the best" of the other This research was supported by National Science Foundation Grants BNS-8605256 and BNS-8807495. Preliminary reports of this research were presented at the Annual Meetings of the Eastern Psychological Association, April 1988; the Midwestern Psychological Association, April 1988; the International Congress o f Psychology, September 1988; and the American Psychological Association, August 1989. A table showing the effect sizes and study characteristics for each study included in the meta-analysis is available from the first author.We thank Anna Fairchild for assistance in locating studies and in recording and checking data. We also thank Judith Hall, Edwin E Hollander, Judi Komaki, Louis Sternberg, Howard ...