Which one of the following statements indicates the complicated relationship between serotonin and aggression?
A. Selective serotonin reuptake–inhibiting drugs cause male hamsters to be less aggressive but also cause female hamsters to be more aggressive.
B. Drugs that increase serotonin in the brain sometimes make males more aggressive and other times make them less aggressive.
C. Low serotonin seems to be correlated with increased aggression in young males but reduced aggression in older males.
D. Artificial neurotransmitters that mimic serotonin sometimes cause younger females to become less aggressive and older females to be more aggressive.
Answer: A
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A large part of the justification for defining personality disorders as mental disorders is that they involve
a. social dysfunction. b. significant personal distress. c. loss of contact with reality. d. significant risk of suicide.
Carly has had intense feelings of sadness for the past several weeks. She has very little energy and has stopped going out with her friends. She has lost her appetite and rarely cooks. Carly feels her situation is hopeless and that she only has herself to blame. MOST likely, Carly has
a. generalized anxiety disorder. b. bipolar disorder. c. major depressive disorder. d. minor depressive disorder.
The process of brain development characterized by intense cell growth originating in stem cells is called
a. migration. b. proliferation. c. differentiation. d. mutation.
A commonly held belief when it comes to romance is that "opposites attract." Which of the following is true about this folk wisdom?
A) It is generally incorrect; humans pair up with those who are most like us. B) It is generally incorrect; there is no relationship between personality and romantic pairing. C) It is generally correct; humans pair up with those who dissimilar, but complimentary personalities. D) It is generally correct; humans pair up with those who have conflicting personalities.