Which of the following statements is supported by research on the role of genetic influences in unipolar disorder?
a. The more severe the depressive disorder, the greater the genetic contribution.
b. Twin studies do not consistently find evidence of an inherited susceptibility to depression.
c. Genes play a more significant causal role in bipolar disorders than they do in unipolar disorders.
d. Bipolar and unipolar disorders are equally heritable.
a. The more severe the depressive disorder, the greater the genetic contribution.
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A greater quality of reinforcement has which of the following effects upon performance?
a. generally decreases the amount of performance b. generally improves performance c. does not alter performance d. makes performance more resistant to extinction
When test scores from a new test correlate with test scores from other tests that measure related constructs, they provide
a. concurrent evidence of validity. b. convergent evidence of validity. c. evidence of validity based on test content. d. predictive evidence of validity.
The ideal of the justice system is that two advocates of equal ability will engage in a pursuit of truth, guided by a ________________ judge.
Fill in the blank(s) with the appropriate word(s).
According to the text, what enhances the health of the pregnant woman and her fetus?
a. mild to moderate exercise b. drinking several cups of tea each day c. eating herbs d. conserving energy