The IQ scores of adoptive parents are correlated with their adopted children, which represents a(n) __________.
A. genetic influence
B. coincidence
C. environmental influence
D. design error
Answer: C
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Posttraumatic stress disorder (PTSD)
a. is most likely to occur when an individual feels personally responsible for the outcome of a traumatic event. b. is more prevalent among men versus women. c. is observed among military personnel, but not the general citizenry. d. often occurs three to six months after a soldier's return rather than immediately afterward.
Post hoc tests are used to a. determine whether an F-ratio is significant
b. determine whether h2 needs to be computed. c. make all pairwise comparisons between group means. d. all of the options are correct
Many studies have demonstrated that many forms of mental illness, such as schizophrenia, are found
a. mostly in Western cultures b. at an ever increasing rate around the world c. at similar rates around the world d. mostly in industrialized countries
A therapist wishes to show that his new therapy is a marked improvement over the current best available therapy
To do so, he examines the number of participants who improved with each. A total of 125 participants received his treatment (and 100 of them improved). A total of 80 participants received the alternative treatment (and 64 of them improved). What should the therapist conclude? A) His treatment is superior to the alternative because 100 is greater than 64. B) His treatment is no better than the alternative because the percentages are the same. C) His treatment is inferior because the percentages are the same. D) His treatment is superior because it included 125 people as opposed to 80.