From what I understand, tests for spatial visualization show less sex differences than mental rotation. If this is true, then we should take steps to help students who lag in this area. Cohort effects were also evaluated in this article. It was stated that women have been catching up to men where cognitive abilities are concerned. I think this is due to society accepting more women involved in typically male dominated fields.
Women have more opportunity to develop their spatial skills than they had before.
I think there are some major problems concerning the study of spatial abilities and this article points them out well. The lack of a solid definition of spatial abilities was stated in the article as well as the lack of definition by the other authors from which they referenced. Furthermore, the authors of this article did not give a definition either. Another problem may come from the designers of the tests used for spatial abilities. This would insinuate that the tests may be bias towards women.