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Do infant and early childhood tests predict intelligence quotients better than maternal characteristics?
1Division of Maternal and Chilld Health and Adolescent Services, Hadassah, Jerusalem, Israel.
Insights
Infant developmental tests at 9 and 24 months show low accuracy for predicting later intelligence. Maternal education is a stronger predictor of a child's intellectual performance.
Area of Science:
- Developmental Pediatrics
- Child Psychology
- Public Health
Background:
- Early childhood developmental testing is crucial for identifying potential developmental delays.
- Assessing the predictive accuracy of early screening tools is essential for effective intervention.
Purpose of the Study:
- To evaluate the sensitivity, specificity, and predictive values of infant developmental tests (9 and 24 months) against later intelligence assessments.
- To compare the predictive power of early developmental tests with maternal education for subsequent intellectual performance.
Main Methods:
- Prospective surveillance of infants attending Maternal and Child services in western Jerusalem.
- Statistical analysis of sensitivity, specificity, and predictive values of developmental tests and maternal education.
- Multivariate modeling including developmental tests, maternal education, origin, birth order, and sex.
Main Results:
- Infant developmental tests at 9 and 24 months demonstrated low sensitivity, specificity, and predictive values.
- These early tests resulted in a high rate of false positives and missed cases of developmental delay.
- Maternal education emerged as the strongest predictor of intellectual performance at 3 and 5 years of age.
Conclusions:
- Routine developmental testing in well-child care may not be effective due to low predictive accuracy.
- Selective use of developmental tests for children with suspected problems, alongside detailed history taking, is recommended.
- Maternal education is a significant factor in predicting a child's intellectual development.
Abstract:
The sensitivity, specificity, and predictive values of infant and early childhood testing for subsequent intelligence tests at 3 and 5 years of age were assessed and compared to the sensitivity, specificity, and predictive value of maternal education for the same. The study was based on prospective surveillance of a population of infants attending the Maternal and Child services in western Jerusalem. The sensitivity, specificity, and predictive value of the 9- and 24-month tests were low, thus leading to labeling of false positives and inadequate detection of those with developmental delay. Maternal education was shown to be the single best predictor for intellectual performance on the 3- and 5-year test in the above analysis, as well as in a multivariate model where the 9- and 24-month tests, maternal education, origin, birth order, and sex were introduced as independent variables. It is recommended to take a detailed history, listen to parents' complaints, and use developmental testing selectively for children suspected to have problems, and not to apply developmental tests as a routine for all children in well-child care.