The Fagan Test of Infant Intelligence: predictive validity in a random sample

Area of Science:

• Developmental Psychology
• Pediatric Neuropsychology
• Psychometrics

Background:

• The Fagan Test of Infant Intelligence is a non-verbal assessment tool used to measure infant cognitive abilities.
• Assessing early cognitive development is crucial for identifying potential developmental delays and informing interventions.
• The predictive validity of infant intelligence tests for later cognitive outcomes remains an area of active research.

Purpose of the Study:

• To investigate the predictive validity of the Fagan Test of Infant Intelligence.
• To assess the correlation between early Fagan Test scores and later cognitive assessments in a general population sample.

Main Methods:

• A longitudinal study involving 196 infants (100 boys, 96 girls) from Norway.
• Infants were administered the Fagan Test between 7-9 months of age.
• At 5 years, participants completed the Wechsler Preschool and Primary Scale of Intelligence-Revised (WPPSI-R) and selected Illinois Test of Psycholinguistic Abilities (ITPA) subtests.

Main Results:

• The Fagan Test exhibited very low internal consistency (alphas = .10 and .02).
• Fagan Test scores showed a significant but low mean correlation (r = .22) with WPPSI-Verbal IQ and ITPA Auditory Reception scores.
• No significant difference in predictive accuracy was observed based on the age of Fagan Test administration (before or after 8 months).

Conclusions:

• The Fagan Test of Infant Intelligence demonstrates poor internal consistency and limited predictive validity for later cognitive abilities in this sample.
• Findings question the utility of the Fagan Test as a reliable screening tool for infants in nonrisk populations.
• Further research is needed to validate infant cognitive assessments for predicting long-term intellectual development.