Studies reporting the objective settlements obtained by men and women in ne
gotiations were reviewed. Differences in outcomes were expected due to diff
erences in perceptions, behaviors, and contextual factors between men and w
omen. In the sample of studies, men negotiated significantly better outcome
s than women. Opponent sex, relative power of the negotiator, integrative p
otential of the task, mode of communication and year of the study were test
ed as moderators of the effect. Although the overall difference in outcomes
between men and women was small, none of these hypothesized moderators or
several exploratory moderators reversed or eliminated this effect. The orga
nizational significance of the findings is discussed in terms of the glass
ceiling, a gender-based earnings differential and women in negotiation posi
tions. Directions for future research in the laboratory and the field are s
uggested.