Professor Dumbledore studies concordance rates as they affect schizophrenia. This means that he studies the ____
a. likelihood that adopted children share more in common with their biological parents than with their adoptive parents
b. likelihood that adopted children share more in common with their adoptive parents than with their biological parents
c. likelihood that both twins of a twin pair will show the same characteristics
d. occurrence of specific diseases in the general population
c
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One reason that psychologists abandoned the view of instinct as a universal explanation of human behavior is that
a. Freud's popular theory rejected the importance of instinct. b. there had been little success in generating a list of human instincts. c. the behaviorist influence began to diminish in the 1920s. d. cross-cultural studies found enormous behavioral variation.
Which of the following is true about the professional activities of psychologists?
a. All psychologists see patients. b. Some psychologists serve as consultants to governments or businesses. c. Psychology researchers are not allowed to do work in nonacademic settings. d. Psychology researchers are not allowed to provide counseling services in a mental health setting.