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SENSORY SPATIAL AFTER‐EFFECTS IN RELATION TO CHRONOLOGICAL AGE, MENTAL RETARDATION AND SCHIZOPHRENIA
Author(s) -
DAY R. H.,
BURNS R.,
SINGER G.,
HOLMES V.,
LETCHER D.
Publication year - 1967
Publication title -
british journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.536
H-Index - 92
eISSN - 2044-8295
pISSN - 0007-1269
DOI - 10.1111/j.2044-8295.1967.tb01052.x
Subject(s) - psychology , mentally retarded , psychopathology , schizophrenia (object oriented programming) , audiology , developmental psychology , age groups , sensory system , cognitive psychology , clinical psychology , psychiatry , medicine , demography , sociology
Claims that the visual and kinaesthetic spatial after‐effect vary as a function of chronological age, mental retardation, and schizophrenia have been tested in four experiments. The principal after‐effect studied was that involving judgements of the horizontal following stimulation by a slanted pattern or object. In Exps. III and IV more traditional visual (alignment) and kinaesthetic (width estimation) tasks were also investigated. Data from Exp. I show that no variation in the kinaesthetic after‐effect occurs with age but suggest that the visual after‐effect may decline with age. The latter may be because adjustment times increase with age. The data from Exps. II and III indicate that there is no difference between normal and mentally retarded subjects in two visual and two kinaesthetic after‐effects. Experiment IV showed that schizophrenic subjects do not differ from normal and psychopathological controls in two visual and two kinaesthetic after‐effects.