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Use the following to answer questions :
Scenario I
The scenario presents fabricated data consistent with the results of the following study:
Gilbertson,M.W. ,Shenton,M.E. ,Ciszewski,A. ,Kasai,K. ,Lasko,N .B. ,Orr,S.P. ,& Pitman,R.K.(2002) .Smaller hippocampal volume predicts pathologic vulnerability to psychological trauma.Nature Neuroscience,5,1242-1247.
Persons who live through a traumatic experience may develop posttraumatic stress disorder (PTSD) .PTSD is characterized by chronic physiological arousal,recurrent unwanted thoughts or images,and avoidance of things that bring the trauma to mind,with symptoms persisting for more than 1 month.Persons with PTSD also are at risk for other psychological disorders,with substance abuse disorder being a common comorbid diagnosis.In the last two decades,a number of studies have demonstrated that persons with PTSD have smaller hippocampi than controls.This may result from the neurotoxic effects of stress hormones examined the hippocampal volume of combat veterans with and without PTSD who each had an identical twin who never served in the military.Fabricated results consistent with this study are shown in Figure 15.1.
Figure 15.1
-(Scenario I) For a number of years,psychologists with expertise in the stress response hypothesized that glucocorticoid release at and shortly after the time of trauma was neurotoxic and led to smaller hippocampi.The results of the study by Gilbertson and colleagues (2002) :
Conj
An abbreviation for "conjunction," which is a compound statement formed by combining two statements with the word "and."
Add
To combine or join something with another, resulting in a sum or total.
Sex-Linked
A characteristic, such as a genetic disorder, that is determined by genes located on the sex chromosomes, typically the X or Y chromosome.
Disorders
Conditions or ailments that disrupt normal physiological or psychological functions.
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