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Discuss research into the effects of two or more environmental stressors on aggressive behaviour (24 marks) An environmental stressor is a situation, which causes a negative emotional experience, accompanied by predictable physiological, biochemical and behavioural changes that are designed to help us adapt to the stressor. The three main environmental stressors are heat, noise and crowding, all of which may result in heightened physiological and psychological behaviour. A large number of studies have investigated the possibility of a connection between temperature and aggressive behaviour. Carlsmith and Anderson (1979) found that hotter weather gives a higher chance of a riot when they looked at disturbances in 79 US cities between 1967 and 1971. There appears to be a similar relationship between violent crime and hot weather. Anderson's (1987) investigation supported this notion when he found that violent crimes were more common in the hotter quarters of the year and in hotter years....

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