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Korean Journal of Psychology: General

Problems of Calculating IQ and SQ in Judgment of Intelletual Disabilities

Korean Journal of Psychology: General / Korean Journal of Psychology: General, (P)1229-067X; (E)2734-1127
2011, v.30 no.3, pp.663-675

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Abstract

This review is aimed to discuss problems of calculating IQ & SQ in judgement of intellectual disabilities and to propose further researches and tasks. In calculating IQ, we have often encountered problems that 1) same subjects got different quotient by various tools/versions 2) equal aged subjects got different quotient by different tools 3) IQ tests did not have norm for elderly(in K-WAIS, over 64) and unable to calculate specific IQ for persons with very low intellectual function(eg. K-WAIS cannot display less than IQ 45). Also, in calculating SQ, there were problems with applying arbitrary CA(Chronological Age) for persons older than 30 and using test items out of date. Fair judgement of intellectual disabilities is very important not only for each individuals involved but also for public society because it is used to determine the beneficiary of disability pension. We also suggested the necessity of 1) psychological evaluation by licensed clinicians 2) consensus among psychologist about IQ/SQ calculation 3) active trial to reflect psychologist's opinion in legislation of intellectual disabilities.

keywords
judgement of intellectual disabilities․mental retardation․IQ․SQ․disabilities Act, 지적장애 판정․정신지체․지능지수․사회성숙지수․장애인복지법, judgement of intellectual disabilities․mental retardation․IQ․SQ․disabilities Act

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Korean Journal of Psychology: General