Stress & immune system
- Created by: tannyraqq
- Created on: 16-03-15 17:29
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- Stress & The immune system
- Kiecolt-Glaser: short-term stress
- PROCEDURES:
- Natural Experiment
- 2 Blood Samples
- One month before exams (low stress)
- During exams (high stress)
- Immune system functioning = measuring T Cell activity from blood samples
- Pp's completed questionnaire = measure other life stressors experiencing
- AIM: does short-term stress have an effect on the functioning of the immune system?
- RESULTS:
- T CELL activity low in second blood sample (during exams)
- Suggests = short-term, stressors reduce immune system functioning = increasing vulnerability to illness.
- T CELL activity low in second blood sample (during exams)
- PROCEDURES:
- Marucha
- PROCEDURES:
- 'punch biopsy' in mouth of students
- during the summer holidays or three days before exams
- 'punch biopsy' in mouth of students
- RESULTS:
- wounds before exams = 40% longer to heal than during holidays
- PROCEDURES:
- EVALUATION
- Stress + Illness = not simple relationship
- LAZARUS
- 1. Health affected y many factors by many different factors
- 2. Health is quite stable & slow to change = difficult to say stressors caused change in health
- 3. Showing stress affects long-term health = continuous measurement over time
- expensive & impractical = research investigate short period of time
- LAZARUS
- stress sometimes enhances the immune system
- short-term stress = doesn't always decrease immune system functioning
- Research support
- Segerstrom & Miller
- meta-analysis
- 293 studies over past 30 years
- short-term (acute stress) = boost immune system = preparing for infection & other challenges
- long-term (chronic stress) = suppression of immune system
- meta-analysis
- Segerstrom & Miller
- Stress + Illness = not simple relationship
- Kiecolt-Glaser: short-term stress
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