TY - JOUR
T1 - Testing formal predictions of neuroscientific theories of ADHD with a cognitive model-based approach
AU - Weigard, Alexander
AU - Huang-Pollock, Cynthia
AU - Brown, Scott
AU - Heathcote, Andrew
N1 - Funding Information:
This study was supported in part by National Institute of Mental Health Grant R01MH084947 to Cynthia Huang-Pollock. The content is solely the responsibility of the authors and does not represent the official views of the National Institute of Mental Health or the National Institutes of Health. We would also like to thank the children, parents and teachers who dedicated their time and effort to participating in the study
Funding Information:
This study was supported in part by National Institute of Mental Health Grant R01MH084947 to Cynthia Huang-Pollock. The content is solely the responsibility of the authors and does not represent the official views of the National Institute of Mental Health or the National Institutes of Health. We would also like to thank the children, parents and teachers who dedicated their time and effort to participating in the study.
Publisher Copyright:
© 2018 American Psychological Association.
PY - 2018/7
Y1 - 2018/7
N2 - Neuroscientific theories of attention-deficit/hyperactivity disorder (ADHD) alternately posit that cognitive aberrations in the disorder are due to acute attentional lapses, slowed neural processing, or reduced signal-to-noise ratios. However, they make similar predictions about behavioral summary statistics (response times [RTs] and accuracy), hindering the field's ability to produce strong and specific tests of these theories. The current study uses the linear ballistic accumulator (LBA; Brown & Heathcote, 2008), a mathematical model of choice RT tasks, to distinguish between competing theory predictions. Children with ADHD (n = 80) and age-matched controls (n = 32) completed a numerosity discrimination paradigm at 2 levels of difficulty, and RT data were fit to the LBA model to test theoretical predictions. Individuals with ADHD displayed slowed processing of evidence for correct responses (signal) relative to their peers but comparable processing of evidence for error responses (noise) and between-trial variability in processing (performance lapses). The findings are inconsistent with accounts that posit an increased incidence of attentional lapses in the disorder and provide partial support for those that posit slowed neural processing and lower signal-to-noise ratios. Results also highlight the utility of well-developed cognitive models for distinguishing between the predictions of etiological theories of psychopathology.
AB - Neuroscientific theories of attention-deficit/hyperactivity disorder (ADHD) alternately posit that cognitive aberrations in the disorder are due to acute attentional lapses, slowed neural processing, or reduced signal-to-noise ratios. However, they make similar predictions about behavioral summary statistics (response times [RTs] and accuracy), hindering the field's ability to produce strong and specific tests of these theories. The current study uses the linear ballistic accumulator (LBA; Brown & Heathcote, 2008), a mathematical model of choice RT tasks, to distinguish between competing theory predictions. Children with ADHD (n = 80) and age-matched controls (n = 32) completed a numerosity discrimination paradigm at 2 levels of difficulty, and RT data were fit to the LBA model to test theoretical predictions. Individuals with ADHD displayed slowed processing of evidence for correct responses (signal) relative to their peers but comparable processing of evidence for error responses (noise) and between-trial variability in processing (performance lapses). The findings are inconsistent with accounts that posit an increased incidence of attentional lapses in the disorder and provide partial support for those that posit slowed neural processing and lower signal-to-noise ratios. Results also highlight the utility of well-developed cognitive models for distinguishing between the predictions of etiological theories of psychopathology.
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U2 - 10.1037/abn0000357
DO - 10.1037/abn0000357
M3 - Article
C2 - 30010369
AN - SCOPUS:85050085707
VL - 127
SP - 529
EP - 539
JO - Journal of Abnormal Psychology
JF - Journal of Abnormal Psychology
SN - 0021-843X
IS - 5
ER -
