According to the text, about what percent of the population is right-handed?

The majority of older adults rate their health favorably because

A) most of them are still in excellent health. B) they compare themselves to their same-age peers. C) they are too embarrassed to reveal their ailments. D) they realize that things could always be worse.

Who first localized the speech control center in the human brain?

a. Broca b. Gage c. Helmholtz d. Galvani