A review of the concordance rates for homosexuality among twin brothers indicates the rate of homosexuality in fraternal twins was 22%. How have researchers interpreted this finding?
a) The rate points to the influence of genetic factors.
b) The finding confirms previous results indicating homosexuality does
not have a genetic basis.
c) This rate is above the rate for non-twin brothers and thus points to environmental influences.
d) The finding indicates the key factor in homosexuality is having a same-sex sibling in the household.
c
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Frank is experiencing a lot of pain. His condition would be classified as a somatic symptom disorder in DSM-5 if
a. Frank's pain is the expected result of a medical condition. b. the pain is chronic. c. Frank is faking or intentionally producing the pain. d. psychological factors are judged to be significant.
In the past month, 11 year-old Christopher has been caught torturing two cats. He also stole a car from the neighbors, burned down his parent's shed, and beat up some kids at school. He might meet clinical criteria for _____
a. Antisocial Personality Disorder b. Generalized Anxiety Disorder c. Oppositional Defiant Disorder d. Attention-Deficit Hyperactivity Disorder
Among Hispanic Americans deaths in the United States in 2007
a. infant mortality rates were much lower than those for non-Hispanic Caucasian infants b. an excessive number resulted from chronic obstructive pulmonary diseases and suicide c. death rates were much higher than those for non-Hispanic Caucasian Americans d. death rates were much lower than those for non-Hispanic Caucasian Americans e. heart disease and cancer are unusually prominent causes of death
Which of the following terms suggests that it is possible to condition all conditioned stimuli equally well to all unconditioned stimuli?
A) Stimulus generalization B) Shaping of successive approximations C) Equipotentiality D) Stimulus discrimination