In order to enhance his baseball performance, Barry has been taking steroids. In recent months, he has begun to experience some medical problems. Which of his problems would be least likely to be the result of steroid use?
a. Liver damage
b. Depression
c. Increased muscle mass
d. Obsessive-compulsive behavior
d
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A psychologist wants to compare heterosexual women with lesbian women with respect to the length of time a love relationship lasts. She decides to compare 100 heterosexual women who are married with 100 lesbians who are currently in a love relationship. Without knowing anything more about this study, what might you suspect to be an important confounding variable?
a. The dependent variable is not clearly specified. b. The heterosexual women are in a legally "sanctioned" relationship, whereas the lesbian women are not. c. The study includes no male participants. d. It is difficult to recruit participants for a study like this.
In addition to getting an average of 60 minutes of vigorous exercise per day, the American Academy of Pediatrics recommends that adolescents who have completed puberty __________ three times per week.
A. lift the heaviest weights they can manage B. alternate between running sprints and jogging C. engage in muscle-strengthening exercises D. engage in muscle- stretching exercises
Which type of drug typically acts on the neurotransmitter GABA?
a. antianxiety b. antidepressant c. antipsychotic d. antisomatic e. mood stabilizing
Collaborating to resolve conflicts is
a. just another way of giving in. b. one of the least useful because of the problems of working in groups. c. generally the most productive approach. d. leads to a buried residue of tension and resentment.