[Longitudinal changes in rigidity in old age].

Abstract

This investigation attempted to deal with the question of longitudinal changes in the rigidity of attitudes and behaviour in a sample of elderly persons (68--90 years old). This was done by collecting data twice (1969/70 and 1976) from 86 subjects on a serie of measures of rigidity. At the same time additional data were collected on external variables such… (More)

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