The theory that explains addiction as a process that first alters brain organization and function and then leads to behaviors related to motivation and reward is known as which of the following?

One night a young couple gets into a loud fight, disturbing their neighbors. Which of these explanations falls on the person side of the person–situation debate?

a. They were both aggressive types. b. She just told him she is unexpectedly pregnant. c. They must have been drinking. d. It was the end of the semester, so they were stressed and tired.

Babies are typically able to walk independently around _______ months of age

a) 12 b) 11 c) 9 d) 8