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[Environment, nutrition and intellectual development]
Insights
Malnutrition and psychosocial cultural deprivation negatively impact preschool children's intellectual and psychomotor development. Early malnutrition particularly affects IQ scores, highlighting the need for interventions.
Area of Science:
- Developmental Psychology
- Pediatric Nutrition
- Child Development
Context:
- Preschool children in urban Santiago, Chile, were studied to understand the effects of malnutrition and psychosocial cultural deprivation (PSAC).
- Nutritional status, intellectual performance (Weschler scales), psychomotor development (Denver Developmental Screening Test), and PSAC were assessed.
Purpose:
- To investigate the differential effects of malnutrition and PSAC on intellectual performance and psychomotor development in preschool children.
- To establish correlations between nutritional status, PSAC, and developmental outcomes.
Summary:
- An inverse correlation was found between malnutrition and intellectual performance (r = -0.36) and psychomotor development (r = -0.39).
- A significant inverse correlation (r = -0.73) existed between PSAC and psychomotor development, while PSAC did not correlate with intellectual performance.
- Verbal IQ was more affected than manual IQ, and early malnutrition (first 6 months) led to lower IQ scores.
Impact:
- Findings underscore the detrimental effects of both malnutrition and PSAC on early childhood development.
- The study informed the development of an educational-nutritional rehabilitation program for children in underprivileged areas.
- Results emphasize the critical window of early development for preventing long-term cognitive and motor deficits.
Abstract:
The differential effects of malnutrition and psychosocial cultural deprivation (PSAC) upon intellectual performance and psychomotor development were studied in 52 preschool children attending nursery schools in urban Santiago (Chile). Nutritional status was evaluated according to Gómez, intellectual performance according to Weschler's scale (WISP and WISC tests), psychomotor development according to the Denver Developmental Screening Test and PSAC according to a numerical scale constructed from maternal I.Q.; socioeconomic status (Graffar) and a psychological questionnaire the correlational analysis, undernutrition was assigned a single value calculated from the severity and duration of the disease. An inverse correlation of - 0.36 existed between malnutrition and intellectual performance, and of - 0.39 between malnutrition and psychomotor development. Also, there was an inverse and significant correlation of - 0.73 between PSAC and psychomotor development; there was no correlation between PSAC and intellectual performance. Verbal I.Q. was more affected (r = - 0.52) than manual I.Q. (r = - 0.18) and children malnourished during the first 6 months of life attained lower scores of I.Q. than normals. The duration of malnutrition (mild in all cases) had no influence upon subsequent I.Q. This study was the basis for a rehabilitation program (educational-nutritional) to be applied in preschool children from nonprivileged areas.