A diffusion model analysis of task set inertia and task set reconfiguration in ADHD.
Level 4 - case-series / case-control
Case-control observational study comparing cognitive performance between children with ADHD and controls.
PubMed 41636125 · doi:10.1017/S135561772510180X
What was done
Children aged 8-12 years with ADHD (N = 34) and non-ADHD controls (N = 28; overall average age = 9.45) completed a 192-trial computerized cued switching paradigm. A diffusion model decomposition was applied to isolate cognitive subprocesses underlying switch performance, assessing task set inertia (drift rate) and task set reconfiguration time (Ter) across switch versus repeat trials.
What was found
The abstract reports no numerical values, effect sizes, or test statistics. Across all children, switch costs were associated with both reduced drift rate (task set inertia) and slower Ter (task set reconfiguration) on switch compared to repeat trials. Children with ADHD had lower accuracy overall compared to controls, attributed to a slower general drift rate; however, ADHD-by-switch interactions were not significant for any variable, showing the deficit was general rather than specific to switching.
Why it matters
The findings suggest that performance impairments on executive switching tasks in ADHD reflect generalized deficits in lower-level perceptual decision-making rather than deficits in switch-specific cognitive reconfiguration.
Limits
The sample size is modest (total N = 62). The abstract provides no exact quantitative data, confidence intervals, or p-values, and does not report clinical details such as ADHD subtypes, medication status, or psychiatric comorbidities.
Cited by
- supports In cognitive psychology, the switch cost refers to an observable delay and performance decrement that occurs when rapidly switching from one task set to another due to cognitive inertia.