Hughes M, Wilson-Derose M, Kiely B
Br J Psychol. 1980 Nov;71(Pt 4):557-60. doi: 10.1111/j.2044-8295.1980.tb01767.x.
Fifty male and 50 female undergraduates were subjects in an experiment where they were required to recall the alphabet and to count either the number of letters containing the sound 'ee' or the number of letters with curves in the upper-case form. The results fail to replicate those of Coltheart et al. (1975), but are consistent with current models of hemispheric specialization. Males were found to complete the visuo-spatial task slower than the females and it is argued that this is due to their greater degree of hemispheric specialization which necessitates transfer of information between hemispheres.