The part of the brain that might be compared to a thin bicycle helmet is the

A six-year-old says that she loves watching Barney, can't stand fast food, and thinks that people who are bald are funny. According to Gordon Allport's approach, she is describing some of her ________ traits

a. central b. primary c. secondary d. cardinal

By the time a child reaches the age of around 18 months, (s)he will start rapidly learning new words and associating them with their meanings. In fact, children at this age may learn up to ___ new nouns every day!

a. 10 b. 25 c. 45 d. 60