A survey of over 6,000 students (Connor & Pope, 2013) found that emotional and cognitive engagement with schoolwork tends to ________ between 7th and 12th grades

Alcohol, barbiturates, and opiates all have ______ effects

a. depressant c. hallucinogenic b. stimulant d. antigenic

Which of the following behaviors is considered to be a type of body language?

a) Facial expressions b) Eye contact c) Gestures d) Nonverbal speech