Intelligent quotient of obese children and adolescents by the Weschler scale

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The intellectual characteristics of 65 obese children and adolescents (weight for height ≥ 140% ), aged 8 to 13 years and 11 months, were compared to those of 35 eutrophic children and adolescents (weight for height between 90 and 110%; and stature for age > 95%) of the same age group, utilizing the Wechsler Intelligence Scale for Children - WISC. Children and adolescents of the two groups were paired according to age groups, schooling level and socioeconomic condition. The obese group was composed of new patients assisted at the Department of Pediatrics of the Federal University of S. Paulo (Escola Paulista de Medicina), Brazil. The control group was made up of children from public primary schools, from the same geographical area as those studied. The eutrophic group presented significantly better performance in the intelligence test (Intelligence Quotient - IQ) than the obese group (average IQ - 9.1 × 85; p < 0.05). Eutrophic children and adolescents revealed a wider range of interests, better capacity for social adaptability as well as greater speed and dexterity. Although weak, there was a positive correlation between income level, weight/stature relation (W/S) and IQ. There was no correlation between IQ and level of schooling. The eutrophic boys from higher income levels showed better perceptual and spacial organizing ability and a wider range of interests than those from the lower income groups. In spite of the fact that all the average IQ results presented consistently favored the eutrophic in relation to the obese, it is not possible to confirm one group's superiority over the other, due to the wide range of intervenient factors involved in the intelligence process.

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Campos, A. L. R., Sigulem, D. M., Moraes, D. E. B., Escrivão, A. M. S., & Fisberg, M. (1996). Intelligent quotient of obese children and adolescents by the Weschler scale. Revista de Saude Publica, 30(1), 85–90.

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