Jared hasn't felt the same about Stacy for some time. He commented to his brother, " I remember when the hair on my neck stood up when she entered a room and I wouldn't stop thinking about her. I guess I just don't love her any more." Based on his statement, we can infer that Jared defines love as _________-based.

Longitudinal research can identify common patterns as well as individual differences in behavior because the investigator

A) studies groups of participants differing in age at the same point in time. B) randomly assigns participants to treatment conditions. C) tracks the performance of each person over time. D) conducts quasi-experiments, comparing conditions that already exist.

Our bodies' lack specialized physiological mechanisms for retaining potassium because:

a. It is not essential to life. b. Is commonly found in plant foods, particularly fruits. c. Is commonly found in meat. d. Both a & b.