If a researcher runs an ad in a paper in order to recruit subjects, and places the first 10 people who call in one group and the next 10 people who call in another group, what sort of threat to internal validity has been introduced?
a. Mortality
b. Experimenter bias
c. Selection bias
d. Regression effect
c
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Erikson would argue that 80-year-old Mable is most likely confronting the psychosocial issue of
a. identity versus role confusion. b. autonomy versus self-doubt. c. industry versus inferiority. d. integrity versus despair.
At what age in fetal development would you expect to first hear the fetal heartbeat?
a. 8 months b. 6 months c. 3 months d. 4 weeks
The human brain consists of four hemispheres
a. True b. False Indicate whether the statement is true or false
The first edition of the DSM contained only three broad categories that are:
A. psychoses, neuroses, and character disorders. B. internalizing, externalizing, and mediating disorders. C. primary, secondary, and tertiary disorders. D. Freudian, Jungian, and undifferentiated disorders.