None of the studies set out to find gender differences. They stumbled on 
them while compiling and analyzing performance evaluations.

SKILL (EACH X DENOTES WHICH GROUP                  MEN           WOMEN
SCORED HIGHER ON THE RESPECTIVE STUDIES)

MOTIVATING OTHERS                                                XXXXX
FOSTERING COMMUNICATION                                          XXXX*
PRODUCING HIGH-QUALITY WORK                                      XXXXX
STRATEGIC PLANNING                                 XX            XX*
LISTENING TO OTHERS                                              XXXXX
ANALYZING ISSUES                                   XX            XX*


* In one study, women's and men's scores in these categories were 
statistically even

DATA: HAGBERG CONSULTING GROUP, MANAGEMENT RESEARCH GROUP, LAWRENCE A. PFAFF, 
PERSONNEL DECISIONS INTERNATIONAL INC., ADVANCED TEAMWARE INC.