A "Hebbian" synapse is one in which ____
a. activity at that synapse strengthens the response of the postsynaptic neuron to all of its synapses
b. repeated use of the synapse over a limited period of time leads to habituation
c. calcium flows into the cell while magnesium flows out of the cell
d. activity of the synapse, paired with an action potential in the postsynaptic cell, strengthens that synapse
d
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According to the comprehensive review of the contact hypothesis carried out by Pettigrew and Tropp, contact is most effective in ___ settings.
a. recreational b. work c. residential d. school e. tourism
Darrius is a college student, who enjoys going to wild, "uninhibited" parties and getting high on marijuana. He also enjoys riding his motorcycle fast and wants to be an EMT after college. Darrius would most likely be described as
a. having a need for power. b. intrinsically motivated. c. high in sensation seeking. d. self-actualized.
What would be the reasonable alternative hypothesis for this study?
A. The program either has no effect or improves the interview skills in the sample. B. The program has no effect on interview skills in the population. C. The program changes the way people interview in this sample. D. The program improves the interview skills in the population.
Your mother and father are examining hospital treatment facilities for your younger sister, who has just been diagnosed with anorexia nervosa. What is the likelihood that she will improve with hospital treatment?
A. 11% B. 22% C. 44% D. 66%