en
Scientific article
English

Beyond interference control impairment in ADHD: Evidence from increased intraindividual variability in the color-stroop test

Publication date2013
Abstract

The present study investigates intraindividual variability (IIV) in the Color-Stroop test and in a simple reaction time (SRT) task. Performance level and variability in reaction times (RTs)-quantified with different measures such as individual standard deviation (ISD) and coefficient of variation (ICV), as well as ex-Gaussian parameters (mu, sigma, tau)-were analyzed in 24 children with attention deficit/hyperactivity disorder (ADHD) and 24 typically developing children (TDC). Children with ADHD and TDC presented equivalent Color-Stroop interference effects when mean RTs were considered, and the two groups did not differ in the SRT task. Interestingly, compared to TDC, children with ADHD were more variable in their responses, showing increased ISD and ICV in the Color-Stroop interference condition and in the SRT task. Moreover, children with ADHD exhibited higher tau values-that is, more frequent abnormally long RTs-in the Color-Stroop interference condition than did the TDC, but comparable tau values in the SRT, suggesting more variable responses. These results speak in favor of a general deficit in more basic and central processes that only secondarily may affect the efficiency of inhibitory processes in children with ADHD. Overall the present findings confirm the role of IIV as a cornerstone in the ADHD cognitive profile and support the search for fine-grained analysis of performance fluctuations.

Citation (ISO format)
BORELLA, Erika et al. Beyond interference control impairment in ADHD: Evidence from increased intraindividual variability in the color-stroop test. In: Neuropsychology, development, and cognition. Section C, Child neuropsychology, 2013, vol. 19, n° 5, p. 495–515. doi: 10.1080/09297049.2012.696603
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
ISSN of the journal0929-7049
398views
0downloads

Technical informations

Creation11/17/2016 12:07:00 PM
First validation11/17/2016 12:07:00 PM
Update time03/15/2023 12:58:28 AM
Status update03/15/2023 12:58:28 AM
Last indexation01/16/2024 10:21:30 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack