Abstract

Biological theories of crime in general include examining the role of heredity and genetics, brain glucose metabolism, and neurotransmitters. Psychological theories implicate psychoanalytic theory, differential association and differential reinforcement theories, Eysenck’s theory of crime, and cognitive theories. In sociology, relevant theories of crime are: functionalism, anomie, control theory, routine activities theory, Chicago School contributions, radical criminology and left realism, labelling theory, subculture and feminism. Regarding theories of homicidal poisoning of relevance to poisoning in general is a theory of delays in moral reasoning, rational choice theory, strain theory and aspects of a gendered view of poisonings. For serial poisoning, differential reinforcement theory, control theory, and labelling theory have relevance. With reference to ‘team poisoning’ (involving more than one perpetrator) work on subculture appears pertinent. A promising theme in theory relating to poison homicide is the shaping of behaviour and understanding over time.

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