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Is the impairment in temporal allocation of visual attention in children with ADHD related to a developmental delay
Sophie Donnadieu1, Carole Berger1, Marie Lallier2
1Laboratoire de Psychologie et Neurocognition, CNRS UMR-5105, Grenoble, France; Université de Savoie, BP 1104, 73011 Chambéry Cedex, France.
Insights
Children with attention-deficit/hyperactivity disorder (ADHD) show attentional blink (AB) patterns similar to younger neurotypical children, suggesting a developmental delay rather than a specific cognitive deficit in temporal attention.
Area of Science:
- Cognitive Neuroscience
- Developmental Psychology
- Neurodevelopmental Disorders
Background:
- The attentional blink (AB) is a cognitive phenomenon reflecting impaired visual target detection when targets appear in rapid serial visual presentation.
- Understanding the AB in children with attention-deficit/hyperactivity disorder (ADHD) can elucidate mechanisms of attention and potential developmental trajectories.
Purpose of the Study:
- To investigate temporal attention allocation in 11-year-old children with ADHD.
- To compare their attentional blink (AB) parameters with age-matched and younger/older neurotypical controls.
Main Methods:
- Assessed attentional blink (AB) duration, amplitude, and minimum performance in 11-year-old children with ADHD.
- Compared AB parameters against three control groups: 8-year-olds, 11-year-olds, and adults.
Main Results:
- Significant developmental effects on AB were observed: duration decreased and minimum position shifted to shorter lags with age.
- Children with ADHD showed AB patterns (duration, minimum position) comparable to healthy 8-year-old controls.
- This suggests a delay in the maturation of temporal selective attention.
Conclusions:
- Impaired temporal selective attention in ADHD may stem from a developmental delay, not a distinct cognitive deficit.
- Findings support a neurodevelopmental perspective on attention deficits in ADHD.
- The study highlights the utility of the AB paradigm in understanding developmental aspects of attention in clinical populations.
Abstract:
We investigated the temporal allocation of visual attention in 11-year-old children with attention-deficit/hyperactivity disorder (ADHD) by comparing their attentional blink (AB) parameters (duration, amplitude and minimum performance) with those observed in three groups of healthy control participants (8-year-olds, 11-year-olds and adults). The AB is a marker of impaired ability to detect a second target following the identification of a first target when both appear randomly within a rapid sequence of distractor items. Our results showed developmental effects; with age, the AB duration decreased and the AB minimum moved to shorter lag times. Importantly, 11-year old children with ADHD presented much the same similar AB patterns (in terms of duration and minimum position) as the healthy 8-year-old controls. Our results support the hypothesis whereby impaired allocation of temporal selective attention in children with ADHD is due to a developmental delay and not a specific cognitive deficit.
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