Related Experiment Video
Updated: May 9, 2026

Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish
Published on: July 18, 2020
[Intelligence quotient and associated facts in children attending school in Medellin, Colombia]
Maryoris E Zapata-Zabala1, Martha C Álvarez-Uribe, Daniel C Aguirre-Acevedo
1Universidad San Buenaventura, Medellín, Colombia. maryoris.zapata@usbmed.edu.co
Objective:
Analyzing the IQ and associated factors in school children aged 6 to 8 years old from the northeastern and northwestern districts of Medellin, Colombia.
Materials And Methods:
Simple, random, stratified sampling was carried out according to grade, level and commune; the sample consisted of 423 male and female children. The Wechsler intelligence scale (WISCIV) was used for evaluating the children's IQ and the Home Observation for Measurement of the Environment (HOME) for evaluating the children's psychosocial stimulation/quality of their home environment. WHO cutoff points were used as reference standards for assessing their nutritional status.
Results:
The following risk factors explained IQ scores and rates: the parents' academic problems, the siblings' behavioral problems, the mothers' alcoholism during pregnancy and aggressive behavior at home.
Conclusion:
The IQ scores and associated rates for children who attended early school years in the two poorest districts of Medellin were correlated with psychosocial background factors and aggressive behavior at home.
Related Concept Videos
Environmental Influences on Intelligence
Binet's Contribution to Measures of Intelligence
Measures of Intelligence
Validity refers to how well a test measures what it claims to measure. An intelligence test should accurately assess intelligence rather than another characteristic, like anxiety. Criterion validity is one way to evaluate this; it...
Biological Influences on Intelligence
Information Processing Approach
Wechsler's Contribution to Measures of Intelligence

