The rats in Dr. Rexington's learning laboratory are on an "FR7" schedule of reinforcement. What does this mean?
a. The rats will receive a food pellet after every seventh bar press.
b. The rats will receive a food pellet after an average of every seven bar presses. c. The rats will receive a food pellet every seven minutes.
d. The rats will receive a food pellet an average of every seven minutes.
e. The rats will receive a food pellet every seven minutes, unless they press the bar seven times in a shorter period of time.
a
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When a person's brain perceives a threat, the cortex sends a signal to the part of the brain responsible for activating the stress response known as the
a. cingulate. b. amygdala. c. hippocampus. d. CRF.
How is having a genetic predisposition to a disease related to contracting that disease?
A. A predisposition toward a disease means that the person will contract the disease. B. Having a predisposition to a disease is unrelated to contracting that disease. C. A predisposition makes a disease more likely, but it does not guarantee that the disease will be contracted. D. Identifying a predisposition means that effective treatments can begin early, and the disease can be thoroughly avoided.
Hair cells in the endolymph hyperpolarize and depolarize as a result of the activity of their _________ channels
a. voltage-dependent sodium b. transmitter-gated potassium c. mechanically gated potassium d. mechanically gated calcium
When All the Friends Have Gone is a book about
a. support groups for the bereaved b. hospice bereavement follow-up programs c. aftercare programs d. grief therapy e. Widow-to-Widow programs