In a multiple regression analysis, the __________ indicates the extent to which the predictor variables as a group predict the outcome variable
a. factor scores
b. p-value
c. multiple correlation coefficient
d. regression coefficient
c
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In family studies, researchers assess hereditary influence by
a. comparing members of one family to unrelated individuals to see how much they resemble one another on specific traits. b. comparing blood relatives to see how much they resemble one another on specific traits. c. comparing the resemblance of adopted children to both their biological and adoptive parents on specific traits. d. comparing the resemblance of identical and fraternal twins on specific traits.
According to LeBon, __________ is one of the main ingredients of contagion theory.
A) milling B) irrational behavior C) expressive behavior D) circular reaction
According to the principle of ecological validity,
a. experiments should be as carefully controlled as possible, in order to avoid confounding variables. b. laboratory settings should be employed whenever possible. c. behavior should be initially studied in its simplest, most basic form; more complex kinds of behavior should be studied later on. d. experiments should be conducted that will have some application to experience outside the laboratory
Family studies are often used to help determine whether a psychological disorder has a genetic component. Which of the following patterns is typical for a disorder that is influenced by genetics?
a. Siblings of the person with the disorder are more likely to have the disorder than cousins, and cousins are just as likely to have the disorder as the general public. b. Siblings of the person with the disorder will almost always have the same or similar disorders, and cousins are more likely than the general public to have disorders. c. Siblings of the person with the disorder are more likely than cousins to have the disorder, and cousins are more likely to have the disorder than the general public. d. Siblings will almost always have the same or similar disorders, though cousins may have a similar rate of the disorder as the general public.