Gender differences in spatial ability were evaluated for two computeri
zed dynamic (one power and one speed) and two static paper and pencil
(one power and one speed) tests over sessions. Four factors were evalu
ated in a factorial design: gender, practice (i.e. session), paper and
pencil vs dynamic (i.e. computerized) spatial tests, and power vs spe
ed. A total of 250 paid volunteer men and women were tested in a count
erbalanced design over two sessions. Results revealed two significant
(P <0.05) triple interactions involving gender, session, and power vs
speed as well as dynamic vs paper and pencil tests. Although men gener
ally did better than women and all subjects improved with practice, wo
men improved at a faster rate for the speeded computer task and were n
ot statistically different from the men at session 2. Future research
should be directed toward two main thrusts: the effects of practice on
the power tests and the effect of practice on the predictive validity
of the speeded computerized tests. Copyright (C) 1996 Elsevier Scienc
e Ltd.