As adults age, their friendships tend to ______

John B. Watson was a major proponent of the _____ perspective in psychology.

A. cognitive B. humanistic C. psychoanalytic D. behavioral

A population with a mean of ? = 6 has ?X = 54 . How many scores are in the population?

a. N = 9 b. N = 27 c. N = 6?54 = 324 d. Cannot be determined from the information given