Abstract
Sample data for the Matching Familiar Figures Test (MFFT) were obtained for a group of 15–18 year old adolescents Group 2 (n = 90) and a group of mildly intellectually handicapped (MIH) adolescents (Group 1) undergoing work preparation training (n = 41). The data showed a continuing trend towards reduction of errors with age although a parallel increase in response latencies was not evident. The performance of the MIH group was comparable with that of 3–5 grade children. There was further evidence of the concurrent and congruent validity of the MFFT as manifest in significant correlations with Porteus Maze Test results and Teacher Ratings of reflection/impulsivity. When Group 2 was stratified into three equal groups on the basis of intelligence test scores into low, average and high IQ groups and the MIH group added, analysis of between group differences showed a significant relationship with general intelligence on 5 of the 6 measures of reflection/impulsivity. Both low-functioning groups (Group 1 and “l...
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