Saturday, November 3, 2012

Kiecolt-Glaser etal(1984)

Kiecolt-Glaser etal(1984)
 The study by KIecolt-Glaser et al suggested that stress could have negative effect on people by producing a lowered immune response.
AIM:
 To investigate whether stress of important examinations has an effect on the functioning of the immune system.
PROCEDURE:
-       This was a natural experiment. The researchers took blood samples from 75 first year medical students, all of whom were volunteers.
-       Blood sample were taken:
(a)  One menthe before their final examination (relatively low stress)
(b)  During the examinations(high stress)
-       Immune function was assessed by meaning T cell activity in the blood samples.
-       The students were also given questionnaires to assess psychological variables such as life events and loneliness.
FINDING:
 The blood sample taken from the first group ( before the exam) contained more T cells compared with blood samples taken during the exam.
CONCLUSION:
 Stress(of the exam) reduced the effectiveness of the immune system.

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