The answer to this question is A because first the correct response must be unambiguously made known to the subject, generally through a shaping procedure. It gives subjects little time for incorrect responses. This leads to the greatest accumulation of reinforcements, hence the greatest pleasure. The schedule is best matched for the motivational state of the subject. The schedule unambiguously informs the subject which behavior is correct. Which statement best explains why continuous reinforcement is best for the beginning of the acquisition phase of operant conditioning? Neurotransmitters bind to receptors on the outside, not inside, of neurons. D is incorrect because, if the receptors were internalized, dopamine could not be pharmacologically active. In any case, pain relief is associated with heroin, not cocaine. C is incorrect because the fetus may not be mature enough to feel pain. B is incorrect because transport of cocaine to the fetal circulation does not indicate whether the drug is pharmacologically active in the fetus.

The answer to this question is A because cocaine is a stimulant it would have a physiological effect similar to stress and hence glucose metabolism is expected to increase. Imaging studies showed increased internalization of dopamine receptors. The fetus had an increase in tolerance to pain. Imaging studies showed that cocaine entered the fetal circulation. Glucose metabolism in the fetal brain increased. Which experimental observation best supports their hypothesis? Researchers hypothesized that cocaine is pharmacologically active in the primate fetal brain when pregnant primates are administered cocaine at doses typically used by human drug users. talking on the phone while surfing the web. Divided Attention Used to complete two or more tasks simultaneously i.e. listening to a friend at a loud party Alternating Attention Used to alternate back and forth between tasks i.e.

Selective Attention Focus on one activity in the midst of many activities i.e.

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