Drinking as little as _____ alcoholic beverage(s) per week was related to increases in child aggression

An experimenter tests the hypothesis that physical exercise helps people's mood (makes them happier). Subjects in the experimental group participate on Monday and Tuesday and those in the control group on Wednesday and Thursday. In this study, what is the dependent variable?

a. the exercise b. the day of the week c. the hypothesis d. the mood (degree of happiness)

Joanna has a Type A personality. Which of the following traits are descriptive of her personality?

A) Competitive and driven B) Negative and distressed C) Relaxed and easygoing D) Obsessive and neat