An empirical standard used to divide a group of data into two or more distinct categories describes a:

When it comes to learning language, the most significant difference between apes and humans is _________________________

a. the inability for apes to learn more than a few signs b. the faster pace of humans' sign language c. the inability of apes to generate word symbols in an infinite number of ways d. the inability of apes to make requests

Extraversion appears related to the

a. behavioral inhibition system. b. avoidance system. c. withdrawal system. d. none of these answers are correct