Jessica borrowed a pencil from a classmate on Tuesday. On Thursday, she asked the same classmate to borrow a calculator. Based on the principle of commitment, predict what the classmate will do?

According to Professor Bouchard, differences among people are the result of the genes that they inherit from their parents. The home a child shares with his or her parents has little impact on the person they turn out to be. If they have something in common with their siblings, it is all due to the genes they share, not their parents loving care. In this set of beliefs, Dr Bouchard _____________________.

Fill in the blank(s) with the appropriate word(s).

Persons high in sensation seeking tend to be more likely to

a. smoke. b. engage in substance abuse. c. engage in casual unprotected sex. d. do all of these.