Summary table of definitions of psychological abnormality Definition of abnormalityOutline of definitionLimitations of this definitionStatistical infrequencyDefinition: According to this definition, any behaviour, which lies outside the statistical average, is abnormal. So behaviour, which occurs frequently, is defined as normal, and behaviour, which occurs frequently, is defined as abnormal.For example: A non-psychological example would be shoe size. Shoe manufacturers need an idea of what the range of shoe size is in order to determine how many of each size to make. If data is collected from a very large group of people, one can draw a NORMAL DISTRIBUTION CURVE. For example, if one collected data on the eating patterns of the GB population using calories consumption per day, the majority of people’s eating behaviour would fall with in a normal range. People with anorexia or with compulsive eating problems would fall outside this range, and therefore be defined as “abnormal”. The same could be done for depression, phobias etc.1. Problem of desirability - According to this definition, behaviour that lies at
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