Working Memory and Processing Speed Predict Math Skills in Pediatric Brain Tumor Survivors

Area of Science:

• Neuropsychology
• Pediatric Oncology
• Cognitive Science

Background:

• Childhood brain tumor (BT) survivors face long-term cognitive sequelae, including working memory (WM) and processing speed (PS) deficits.
• These deficits can negatively affect academic achievement and other cognitive functions.
• Understanding these impacts is crucial for comprehensive survivor care.

Purpose of the Study:

• To evaluate working memory (WM), processing speed (PS), and untimed mathematics performance in pediatric BT survivors.
• To identify medical factors associated with mathematical deficits.
• To determine if WM and/or PS predict mathematics performance in this cohort.

Main Methods:

• Retrospective analysis of neuropsychological evaluation data from 72 pediatric BT survivors (ages 7-21).
• Participants underwent standardized assessments of WM, PS, and untimed mathematics calculation.
• Data included medical history and neurological assessment scales.

Main Results:

• Pediatric BT survivors demonstrated significantly lower WM, PS, and mathematics scores compared to normative data.
• Mathematics performance was not correlated with examined medical factors.
• Both WM and PS were significant predictors of mathematics outcomes, explaining substantial variance.

Conclusions:

• Working memory (WM) and processing speed (PS) are critical components of mathematics performance in pediatric BT survivors.
• Clinical evaluations should include assessments of mathematics abilities.
• Interventions should target WM enhancement and develop compensatory strategies for slowed PS.