Franz and Colleagues (1996) Asked a Patient Who Had Had

Multiple Choice

Franz and colleagues (1996) asked a patient who had had his corpus callosum surgically severed to draw figures like the ones here, each simultaneously with a different hand. Compared to neurologically intact control participants, they found that this patient

A) was better at producing movements simultaneously with both hands, even when they differed in direction.
B) was selectively impaired when simultaneously producing movements with each hand when they differed in direction.
C) performed poorly and was especially impaired when the figures closely resembled each other.
D) was better at producing movements simultaneously with both hands only when they differed in direction.