Which of the following people can be described as having features of obsessive-compulsive disorder?
a. Buckie, who locks and unlocks her door three times each time she enters and leaves her home b. Scott, who has a low-level state of anxiety that seems to travel with him wherever he goes
c. Rick, who has an irrational fear of riding on escalators
d. Mary Jo, who refuses to leave her house because going out in public makes her panic e. Guillermo, who experiences sudden, unexpected episodes of sheer terror
a
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Explain why manipulation of an independent variable is a necessary component of an experiment
What will be an ideal response?
Exercise is important in any weight loss program because it ____
a. ?increases blood-insulin levels and decreases blood-glucose levels b. ?suppresses hunger through body fatigue c. ?decreases the number of fat cells in the body d. ?counteracts the body’s tendency to decrease metabolism
Which of the following is not a characteristic of a testable research hypothesis?
a. It is stated in terms of operational definitions. b. It states how the independent variable is manipulated. c. It specifies the relation between the independent and dependent variables. d. It reflects both inductive and deductive reasoning.
What does the research say about the effectiveness of abstinence-only education?
a. Students in abstinence-only programs delay sex longer than those not in such programs. b. Students in abstinence-only programs are more likely to use condoms than those not in such programs when they do become sexually active. c. Students in abstinence-only programs have lower rates of STIs than those not in such programs. d. Students in abstinence-only programs have the same rates of sexual activity and STIs as those not in such programs.