IQ Predicts Neuropsychological Performance in Children

Abstract

Introduction: This study examined whether IQ predicts neuropsychological performance among children with varying ability levels. Method: 177 children/adolescents were subdivided as Below Average (BA; N = 71; IQ = 60–85), Average (A; N = 72; IQ = 90–110), or Above Average (AA; N = 34; IQ = 115–140) in IQ. Assessments included intelligence, achievement, memory, and executive functioning measures. Results: Group differences were found on all tests (p < .001). Planned comparisons revealed differences between BA and A on seven variables, and between A and AA on five variables with small-to-medium effect sizes. Correlations were found between IQ and neuropsychological functioning and varied by group membership. Discussion: In children, IQ predicts neuropsychological performance differentially based upon ability level, with stronger relationships shown in lower IQ ranges.

Keywords:

• academic achievement
• child
• executive functioning
• IQ prediction
• memory
• neuropsychology