The document discusses research on gender differences in leadership abilities. While leadership roles have traditionally been held by men, more women are now entering leadership positions. Some research has found small differences in leadership styles between men and women, while other studies found no effect of gender on leadership. Perceptions of leadership effectiveness can also differ based on traditional gender roles, with men and women seen as more effective in stereotypical roles. However, one researcher found that actual differences between male and female leadership styles are small.