A sample carefully chosen so that the characteristics of the subjects correspond closely to the characteristics of the general population is known as a ______ sample

The most common drug used to treat children with ADHD is Ritalin, which is a(n)

a. stimulant. b. depressant. c. antipsychotic. d. anxiolytic. e. mild tranquilizer.

Regular tooth brushing is not inherently enjoyable, but you do it every day. You are involved in ___________ regulation

a. goal-directed b. rationalized c. intrinsic d. integrated