Stress case studies

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  • Created by: momomomo
  • Created on: 25-04-14 15:44
  • Understand definitions of stress and in particular the role of perception and appraisal // Lazarus and Folkman

transactional model- model of stress that defines stress as an imbalance between percieved demands as an indiviual and their perceived resources.

Key process: primary appraisal and secondary appraisal. P.A=person appraises situation to identify threats/demands , S.A=the person appraises ability to cope with threatening situation

If result is that demands outstrip coping resources then a state of stress exists

Takes individual differences into account

  • Outline and evaluate research findings into the effects of stress on the immune system // Cohen et al

Investigated the role of general life stress on vulnerability to a cold. 394 participants completed questionnaires on life events the previous year and rated their degree of stress and level lof negative emotions. Combined=stress index. 82% became infected when exposed and the chance of developing a cold correlated with stress index scores

Evaluation: No direct manipulation of IV - cause and effect can't be made                                Ethical issues- making people sick                                                                                   Value of study should be balanced against distress to participants                                           Doesn't explain which element of stress index is most important                                              Supported by Evans                                                                                                             Informed consent/debriefing

// Kiecolt and Glaser

75 medical students had NK cell activity measured from blood 1 month before exam and during exam period. Also completed questionnaires on social isolation and previous negative life events. Nk cell activity was significantly reduced in high stress samples and students who were more isolated. Concluded- examination stress (brief naturalistic) reduces immune function making the students more vulnerable to illness/infections



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