If you drop a predictor from the regression equation
a. the correlation could increase.
b. the correlation will probably go down.
c. the correlation could stay the same.
d. both b and c
D
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When neuroscientists use PET scans (positron emission tomography),
a. they assess the regions of the brain in which blood flow increases while a person is performing a task. b. they record the neural impulses from one neuron in the human brain. c. they stimulate a brain region in a patient who recently had a stroke or tumor. d. they place electrodes on a person's scalp.
Which of the following diseases/disorders is an example of dominant-recessive inheritance?
A. Prader-Willi syndrome B. Down syndrome C. Autism D. Cystic fibrosis
Rational-emotive therapy asserts that
a. an empathetic relationship between client and therapist is essential for treatment to be successful. b. self-blame is the beginning of accepting responsibility for personal failures. c. psychological problems are a result of a person's belief system. d. a directive, argumentative approachby the therapist is counterproductive. e. unconditional positive regard is vital to the therapeutic climate.
An experimenter is conducting a factorial study in which she is examining the effects of threat (low vs. high) and reward (none, small, and large) on risk taking. Which of the following would NOT be one of the treatment conditions in this study?
a. high risk and low threat c. high threat and small reward b. low threat and large reward d. high threat and no reward