Dr. Pohler is a neurobiologist studying ways to enhance the perception of sound in people with hearing difficulties. He discovers a natural neurotransmitter that increases the chance a neuron will fire an action potential, increasing sensitivity to sound. What is the effect of this neurotransmitter on the receiving neuron?
a. inhibitory, causing hyperpolarization
b. inhibitory, causing depolarization
c. excitatory, causing hyperpolarization
d. excitatory, causing depolarization
ANSWER:
d
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While on an airplane, John completes a crossword puzzle in which interrupt, rude, and blunt are all answers. After landing, John gets in line to speak to someone at the ticket counter, but the ticket agent does not notice him because he is too busy talking with another employee. Research on priming suggests that John will be likely to
a. leave and get in line at another gate to ask his question. b. interrupt the ticket agent, whom he judges to be quite rude. c. wait patiently until the agent finishes his conversation. d. forget about asking his question and go look for something to eat.
Which conclusion is most accurate regarding the research on violence in the mass media and aggression?
a. It has shown that violent media can cause aggression. b. It has shown that there is a relationship between violent media and aggression, but it has not shown causality. c. It has shown that there is a relationship between violent media and aggression for men but not for women. d. Conclusions are mixed; it has NOT shown a clear relationship between violent media and aggression.
______ is a better measure of variability than the range.
A. Standard deviation B. Variability C. Skewed D. Range
The experimental technique that involves removing part of the brain is known as
a. brain ablation. b. dissociation. c. fMRI. d. EEG.