Birthday gifts are best described as examples of reinforcers that are received on a(n) _____ schedule
A) ?VT
B) ?FT
C) ?FR
D) ?VR
B
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When individuals who are biologically vulnerable to depression place themselves in high risk stressful environments, it is called:
a. humoral theory the cognitive b. behavioral model' c. the reciprocal gene-environment model d. a stress-depression linkage effect
The correlation between brain size and intelligence is ______, meaning that about ______ of the difference in intelligence between individuals is related to brain size.
A. .50; 33% B. .25; 20% C. .33; 11% D. .24; 6%
Evidence that long-term potentiation has occurred is obtained by periodically delivering single pulses to the perforant path and recording the response in the dentate gyrus. If the response is __________ what it was before the burst of pulses was delivered, long-term potentiation has occurred.
A. greater than B. less than C. equal to D. exactly half
In an experiment by Van Straaten, Engels, Finkenauer, and Holland (2009), university students (both attractive and less attractive) conversed with an opposite-sex confederate whose physical attractiveness also was varied (high versus low). The study found that
a. attractive men showed more approach behavior with attractive women b. both attractive men and women showed more approach behavior with attractive members of the opposite sex c. attractive women showed more approach behavior with attractive men than with less attractive men d. none of these