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An assessment of criminal behaviour from a biological perspective Prior to 1990 there was a huge amount of research looking at biological and biochemical factors in relation to criminal activity, studies by Hippchen (1978) looked at the role of vitamin and mineral deficiencies in criminal behaviour and the effect vitamin B3 deficiency has on children and adolescents, however Weiss (1983) argued that hyperactive children have an increased risk at later delinquency, other such studies have examined dietary factors such as levels of protein, carbohydrates and sugar in relation to criminal behaviour. Following 1990 there have been a number of studies in the area of biology and it's relation to crime, it has long been argued that physiological under arousal may be a causal determinant of violent and criminal behaviour (Eysenk, 1977, Hare 1970, Quay, 1965) and following several studies into the subject under-arousal by Raine and Liu (1998) it was found...

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