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Published on: August 25, 2014
Cognitive and behavioral aspects of executive functions in children born very preterm
Barbara Catherine Ritter1, Walter Perrig, Maja Steinlin
1a Children's University Hospital, Division of Neuropaediatrics, Development and Rehabilitation , Bern , Switzerland.
Insights
Children born very preterm (VPT) or with very low birth weight (VLBW) showed cognitive deficits in shifting but not inhibition or working memory. Behavioral measures indicated everyday working memory challenges, highlighting the need for combined assessments.
Area of Science:
- Developmental Psychology
- Neuroscience
- Pediatrics
Background:
- Children born very preterm (VPT) and/or very low birth weight (VLBW) may experience executive function (EF) challenges.
- Executive functions encompass inhibition, working memory, and shifting, crucial for daily functioning.
- Understanding sex differences in EF for VPT/VLBW children is important.
Purpose of the Study:
- To compare cognitive and behavioral executive functions in VPT/VLBW children versus term-born controls.
- To investigate potential sex differences in executive function performance.
- To determine the congruence between cognitive and behavioral EF measures.
Main Methods:
- Fifty-two VPT/VLBW children and 36 term-born controls (aged 8-12 years) participated.
- Cognitive EF was assessed using inhibition, working memory, and shifting tasks.
- Behavioral EF was evaluated through maternal reports on the Behavior Rating Inventory of Executive Function (BRIEF).
Main Results:
- VPT/VLBW children performed significantly lower on cognitive shifting tasks compared to controls.
- Mothers reported more behavioral working memory problems in VPT/VLBW children.
- No significant sex differences were found in cognitive or behavioral EF measures.
Conclusions:
- Cognitive and behavioral assessments of executive functions are not always congruent in VPT/VLBW children.
- VPT/VLBW children may exhibit specific difficulties in cognitive shifting and everyday working memory.
- Combined cognitive and behavioral instruments are essential for comprehensive identification of executive difficulties in clinical practice.
Abstract:
This study investigated whether children aged between 8 and 12 years born very preterm (VPT) and/or at very low birth weight (VLBW) performed lower than same-aged term-born controls in cognitive and behavioral aspects of three executive functions: inhibition, working memory, and shifting. Special attention was given to sex differences. Fifty-two VPT/VLBW children (26 girls, 50%) born in the cohort of 1998-2003 and 36 same-aged term-born children (18 girls, 50%) were recruited. As cognitive measures, children completed tasks of inhibition (Color-Word Interference Test, D-KEFS; Delis, Kaplan, & Kramer, 2001), working memory (digit span backwards, HAWIK-IV; Petermann & Petermann, 2008), and shifting (Trail Making Test, number-letter-switching, D-KEFS; Delis et al., 2001). As behavioral measures, mothers completed the Behavior Rating Inventory of Executive Function (BRIEF; Gioia, Isquith, Guy, & Kenworthy, 2000). Scales of interest were inhibit, working memory, and shift. Analyses of the cognitive aspects of executive functions revealed that VPT/VLBW children performed significantly lower than controls in the shifting task but not in the working memory and inhibition tasks. Analyses of behavioral aspects of executive functions revealed that VPT/VLBW children displayed more problems than the controls in working memory in everyday life but not in inhibition and shifting. No sex differences could be detected either in cognitive or behavioral aspects of executive functions. To conclude, cognitive and behavioral measures of executive functions were not congruent in VPT/VLBW children. In clinical practice, the combination of cognitive and behavioral instruments is required to disclose children's executive difficulties.
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