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Most tranquilizers reduce anxiety by:


A) decreasing GABA.
B) increasing GABA.
C) blocking dopamine.
D) increasing CCK.

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What area of the brain seems to be a key area for learned fears?


A) occipital cortex
B) somatosensory cortex
C) corpus callosum
D) amygdala

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Individuals with pure autonomic failure:


A) do not experience emotions.
B) are paralyzed.
C) are always fearful.
D) do not experience much intensity of emotion.

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It is possible to predict (with moderate accuracy) people's political attitudes toward the use of the military, the death penalty, and so forth by monitoring which of the following?


A) differences in fMRI response between the left and right hemispheres
B) size of the hippocampus
C) amygdala responses to a sudden loud noise
D) fluctuations in testosterone levels between morning and evening

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One study found that many young men showed an increase in aggressive behavior a few hours after eating a diet:


A) high in tryptophan.
B) high in both tryptophan and phenylalanine.
C) low in tryptophan and high in phenylalanine.
D) low in both tryptophan and phenylalanine.

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A variety of studies indicate that anxiety is increased by the transmitters ____ and ____.


A) alprazolam, orexin
B) cholecystokinin, orexin
C) orexin, diazepam
D) alprazolam, cholecystokinin

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The term "serotonin turnover" refers to the amount of serotonin that is:


A) released at synapses and resynthesized.
B) currently present in the brain.
C) radioactively labeled.
D) converted into another transmitter.

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High cortisol levels increase the likelihood that hippocampal cells will be:


A) responsive to new learning.
B) capable of generating a circadian rhythm.
C) synchronized to sensory stimulation.
D) vulnerable to damage by toxins.

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Aged people with the highest cortisol levels tend to be those with the:


A) largest hippocampus.
B) greatest memory problems.
C) greatest amount of social support.
D) most cellulose in the diet.

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Recurring nightmares, exaggerated startle response, and avoidance behavior are common symptoms of:


A) autoimmune disorders.
B) schizophrenia.
C) alcoholism.
D) posttraumatic stress disorder.

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Male aggressive behavior depends heavily on:


A) acetylcholine.
B) estrogen.
C) testosterone.
D) dopamine.

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Direct injections of cytokines into the brain would increase appetite.

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In the revised James-Lange theory of emotion, what occurs first?


A) cognitive appraisal
B) actions
C) physiological changes
D) feeling

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If a treatment suddenly lowered your serotonin level:


A) you would experience depression.
B) you would become violent.
C) you would become both depressed and violent.
D) we could not predict how and when your behavior would change.

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One explanation for the difficulty that people with amygdala damage have with recognizing fearful faces is that they:


A) can't see very well.
B) don't remember what fear looks like.
C) focus their attention on the eyes of faces instead of the nose and mouth.
D) focus their attention on the nose and mouth of faces instead of the eyes.

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Several studies have found that ____ is particularly enhanced in people with both a genetic predisposition and a troubled early environment.


A) anxiety
B) emotion
C) violence
D) trust

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Of the following choices, the most likely explanation for how testosterone may be associated with violent behavior is that it:


A) may induce greater attention to situations of aggression and conflict.
B) creates greater muscle mass.
C) reduces inhibitions.
D) inhibits cells in the amygdala.

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PTSD victims tend to have a ____ hippocampus and ____ cortisol levels.


A) larger, higher
B) larger, lower
C) smaller, higher
D) smaller, lower

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Proteins that circulate in the blood, specifically attaching to one kind of antigen are:


A) macrophages.
B) B cells.
C) T cells.
D) antibodies.

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According to the James-Lange theory, we experience emotion:


A) first, then come our actions.
B) and act upon that emotion, simultaneously.
C) after we experience autonomic arousal.
D) and must label it before we can act on it.

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