The impact of family factors on IQ in pediatric medically refractory epilepsy
Related Experiment Video
Updated: Mar 15, 2026

Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization
Published on: September 20, 2024
Klajdi Puka1, Mary Lou Smith2, Elysa Widjaja3
1Department of Psychology.
Insights
Family demands may influence intellectual functioning in children with medically refractory epilepsy. Specifically, higher family demands were linked to lower IQ scores in children with multilobar epilepsy foci.
Area of Science:
- Pediatric Neurology
- Neuropsychology
Background:
- Medically refractory epilepsy in children can impact cognitive development.
- Understanding factors influencing intellectual functioning is crucial for comprehensive care.
Purpose of the Study:
- To investigate associations between family factors and intellectual functioning in children with medically refractory epilepsy.
- To determine if family factors moderate the relationship between epilepsy characteristics and intellectual functioning.
Main Methods:
- Children aged 4-18 with medically refractory epilepsy were assessed for intellectual quotient (IQ).
- Patient, epilepsy, and family factors (including parental education, income, family functioning, and demands) were evaluated.
- Statistical analyses explored univariable and multivariable associations and moderation effects.
Main Results:
- Higher IQ was associated with older age of epilepsy onset, fewer antiepileptic drugs, shorter epilepsy duration, unilobar epileptogenic foci, and lower family demands.
- Unilobar foci and shorter epilepsy duration remained significant predictors of IQ in multivariable analysis.
- Family demands moderated the relationship between epileptogenic foci extent and IQ, with multilobar foci associated with lower IQ under higher family demands.
Conclusions:
- Family factors generally had a limited impact on IQ in this cohort, but family demands showed a notable moderating effect.
- Epilepsy-related factors may attenuate the influence of family factors on child IQ.
- Further research into the moderating role of family demands is warranted.
Objective:
To evaluate whether family factors were associated with intellectual functioning among children with medically refractory epilepsy, and whether family factors moderate the relationship between patient/epilepsy-related variables and intellectual functioning.
Method:
Children aged 4 to 18 years with medically refractory epilepsy who were evaluated for surgical candidacy were recruited. The authors assessed the association of intellectual quotient (IQ) with patient, epilepsy, and family factors. Family factors included parental education, household income, and validated parent-report measures of family functioning, family mastery and social support, and family demands.
Results:
Univariable analyses showed that higher IQ scores were associated with an older age of epilepsy onset (β = .260, p = .009), fewer antiepileptic drugs (β = .248, p = .013), a shorter duration (β = .384, p < .001) and percentage of life with epilepsy (β = .419, p < .001), unilobar epileptogenic foci relative to multilobar foci (β = .274, p = .006), and lower family demands (β = .211, p = .035). In multivariable analysis, unilobar epileptogenic foci (p = .010) and a shorter percentage of life with epilepsy (p = .001) remained significant predictors of IQ. Exploratory moderation analyses found the relationship between the extent of epileptogenic foci and IQ to be moderated by family demands (p = .004); specifically, patients with unilobar epileptogenic onset had similar IQ scores irrespective of family demands, whereas patients with multilobar foci had lower IQ scores with increasing family demands.
Conclusion:
Family factors did not have a large impact on IQ among children with medically refractory epilepsy, although the moderating effect of family demands deserves further study. Epilepsy-related factors in this patient group may weaken the link between child IQ and family factors. (PsycINFO Database Record
More Related Videos
10:22Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy
Published on: December 6, 2016
08:04Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons
Published on: June 6, 2025
Related Concept Videos
Biological Influences on Intelligence
Environmental Influences on Intelligence
Epilepsy and Seizures: Overview
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
Intellectual Disability
Pharmacokinetics in Pediatric Patients: Drug Metabolism
Pharmacokinetics in Pediatric Patients: Drug Excretion