The results of sodium amytal tests suggest that the percentage of healthy right-handers in the general population that are left-hemisphere dominant for speech is
A) more than 90%.
B) about 90%.
C) about 80%.
D) about 70%.
E) less than 60%.

Question

Quizplus · Accepted Answer

The sodium amytal test, also known as the Wada test, has shown that more than 90% of healthy right-handed individuals are left-hemisphere dominant for speech. This reflects the lateralization of brain function, where the left hemisphere is typically responsible for language in the vast majority of right-handers.

The Results of Sodium Amytal Tests Suggest That the Percentage