Central traits are changeable aspects of personality, such as musical preferences, habits, and casual opinions

At approximately what age will a child begin to utter her first two-word sentences?

10–12 months 6–10 months 18 months 21 months

An experiment was run in which group A was given 3 minutes to study a word list, while group B was given 10 minutes to study the same list. Later, both groups were asked to recall words from the list. In this study, the number of words recalled is the __

a. independent variable b. dependent variable c. placebo d. control group