The symbols a and b are frequently referred to as
a. regression coefficients.
b. constants.
c. slopes.
d. regression correlations.
A
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When Supreme Court Justice Blackmun heard that the prediction of violence is wrong two out of three times, he concluded that predicting violence using a coin flip would be more accurate. Why was he wrong?
a. The specificity of a coin flip is above 50 percent. b. The sensitivity of a coin flip is above 50 percent. c. The base rate of violence is much lower than 50 percent. d. The coin flip is random, not based on clinical judgment.
In what controversial method of biological therapy is an electrical current passed through the temples inducing a seizure?
a. a prefrontal lobotomy c. biofeedback therapy b. electroconvulsive therapy d. none of these
Where does a person's perception of a salty flavor occur?
A. In the cortex B. In the taste buds C. In the thalamus D. In the papillae
To replicate an experiment means to
a. use control groups and experimental groups. b. use statistics to determine the effect of chance. c. control for the effects of extraneous variables. d. repeat the experiment using either identical or improved research methods.