COHEN ET AL (1991)
investigatied the impact that general life stressors had on vunrability to the common cold virus
394 participants
completed questionnaires on the number of stressful life events that they had experianced in the previous year
Also rated how stressed they felt
And if they were experiencing any negative emotions
Their three scores were then added together to get the stress index score
Cohen then gave them all a nasal drop which contained the common cold virus
82% of participants became infected and after 7 days actual number of people with virus was recored
found that failing to fight virus was positively collrealted with the stress index score= the more chance they had of developing the common cold virus
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