Twins that develop from two separate fertilized ova and are therefore different in genetic make-up are ______ twins
a. identical c. Siamese
b. fraternal d. symbiotic
b
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Who defined group cohesion as “the total field of forces which act on members to remain in the group”?
a. Leon Festinger and his colleagues b. Michael Hogg c. Bruce W. Tuckman d. Coach Paul (“Bear”) Bryant e. Coach Herb Brooks
The stimuli below are seen as one group of circles and one group of squares due to the organizational principle of
a. continuity. b. closure. c. similarity. d. nearness.
Professor Mayes studies prairie voles. He has found that male voles with elevated levels of ____ will establish pair-bonds with their mate and help raise their young.
A. testosterone B. vasopressin C. estradiol D. prolactin
In the final stage of neural circuit pruning, the postsynaptic neuron sends "feedback" to the presynaptic neuron in the form of ___
a. a retrograde neurotransmitter b. neurotrophins c. chemicals that enhance the survival of glial cells d. All of the above