The negative symptoms of schizophrenia appear to be produced by
a. extremely low levels of dopamine.
b. extremely high levels of dopamine.
c. the gene for schizophrenia.
d. loss of brain tissue.
e. erratic firing of unmyelinated neurons.
d. loss of brain tissue.
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The Belmont Report provides basic ethical guidelines for the ____
a. treatment of human participants in research b. treatment of nonhuman subjects in research c. reporting of research results d. order of authors
When a rat presses a lever, it occasionally produces a food pellet. The rat presses the lever hundreds of times, earning many food pellets. Hull and Spence would argue that lever pressing is reinforced by the:
A) expectation of the food pellet. B) taste of the food pellet. C) feel of the depressed lever. D) reduction in hunger.
The different abilities implicated in the competency to plead guilty include
A. impulse control. B. attention and concentration. C. cognitive awareness and reasoning. D. all of the above
A young child is suffering from a life-threatening disorder in which he involuntarily regurgitates all food. When no other therapies work, the child is given electric shock to eliminate his vomiting behavior. The electric shock is a form of
A. systematic desensitization therapy. B. positive reinforcement. C. punishment. D. covert sensitization.