One sign that catatonic individuals appear to be struggling desperately to control their inner turmoil is that
a. they alternate rapidly between mania and deep depression.
b. they show an extreme preoccupation with certain thoughts and a compulsion to perform certain behaviors.
c. the stupor state occasionally gives way to agitated outbursts or violent behavior.
d. the stupor state is endogenous being produced from within rather than as a reaction to life events.
ANSWER: c
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Procedures such as fMRI and PET can help research investigators explore the relationship between brain functions and
a. an individuals' likelihood of becoming depressed later in life. b. specific mental disorders. c. social deficits. d. likelihood of malingering.
Untreated PKU may create physical problems such as
a. awkward gait and spasms. b. severe language delay. c. intellectual disability. d. all of these may be caused by untreated PKU.
In color vision, brightness is to __________ as saturation is to __________
a. wavelength; hue b. intensity; wavelength c. purity; hue d. intensity; purity e. purity; intensity
Which of the following statements is essential to classical conditioning?
a. The CS and UCS must come close together in time. b. The CS must come immediately after the CR. c. The neutral stimulus and UCR must be paired several times before conditioning takes place. d. The CS should be something highly unusual.