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D. Hook 19/11/99 The Psycho-Biology of Stress Stress is deemed by many Psychologists and Biologists to be a very ambiguous term, but it can broadly be defined as "the rate of wear and tear on the body" or 'anything which upsets the homeostatic balance of the body'1(Dr Hans Selye- 1956). As a result it is seen to have a number of effects on the body, both psychologically and physiologically. These effects are broadly categorised by three stages; the Alarm stage (the body's initial reaction to stress), the Adaptation stage (involving the activation of the appropriate responses and the reestablishment of the homeostatic balance) and the Exhaustion stage (if the stress is prolonged or repeated, characterised by increased susceptibility to disease)2 (Dr Hans Selye- 1976). On a psychological level, it can cause anxiety, anger and aggression, apathy and depression, and even cognitive impairment. On a Physiological level it leads to an...

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