A project director is committed to using a noninvasive technique to examine the functions of the brain. If she is true to her word, she will avoid the use of
a. lesioning techniques.
b. magnetic resonance imaging.
c. positron emission tomography.
d. functional magnetic resonance imaging.
Answer: a. lesioning techniques.
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Which statement is a cognitive characteristic of individuals with obsessive-compulsive disorder?
a. "I have to be absolutely certain that I turned off the computer.". b. "Thinking about throwing little Timmy under the bus isn't as bad as actually doing it.". c. "If I just find a way to relax, then everything will be okay.". d. "My thoughts are always rational.".
Experiments seem to indicate that rats can tell time. Which of these statements is evidence to support this claim?
A. Rats learn quickly in fixed interval schedules to press the lever close to the time when the interval has elapsed. B. In fixed ratio schedules, rats learn to count how many responses will get them the reward. C. When using variable interval schedules, the rat will begin to predict when the interval is over. D. Rats exposed to variable ratio schedules learn to sense subtle changes in pressure as the reward is loaded into the device.