Dealing with new members: Team members' reactions to newcomer's attractiveness and sex.

We examine how team members respond to the inclusion of new members' physical attractiveness and sex. Drawing on Social Exchange Theory, we argue and show that incumbent team members engage in three behaviors (mimicry, ingratiation, and challenging) in response to the inclusion of more or less attractive male or female members in their team. Using a multilevel experimental design, we show that existing team members mimic newcomers who are higher on physical attractiveness and that the effect is more pronounced when there is a sex match (i.