Sodium amytal tests have indicated that
A) the cerebral dominance for speech is more variable in left-handed individuals than in right-handed individuals.
B) right-handers are more likely to be left-hemisphere dominant for speech than right-hemisphere dominant for speech.
C) left-handers are more likely to be right-hemisphere dominant for speech than left-hemisphere dominant for speech.
D) all of the above
E) both A and B

Question

Quizplus · Accepted Answer

Sodium amytal tests, which involve temporarily inactivating one hemisphere of the brain to study its functions, have shown that cerebral dominance for speech varies more among left-handed individuals than right-handed ones (A), and that right-handers are predominantly left-hemisphere dominant for speech (B). These findings do not support the generalization that left-handers are more likely to be right-hemisphere dominant for speech (C), making E the correct choice.

Sodium Amytal Tests Have Indicated That