Research Topics
| A ScheresSummaryAffiliation: University of Arizona Country: USA Publications
Research Grants
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Detail Information
Publications
Temporal and probabilistic discounting of rewards in children and adolescents: effects of age and ADHD symptomsAnouk Scheres
Psychology Department, University of Arizona, Tucson, 85721, USA
Neuropsychologia 44:2092-103. 2006..The decrease in TD as observed in adolescents compared to children may be related to developmental changes in the (dorsolateral) prefrontal cortex. Future research needs to investigate these possibilities...- Ventral striatal hyporesponsiveness during reward anticipation in attention-deficit/hyperactivity disorderAnouk Scheres
Department of Psychology, University of Arizona, Tucson, Arizona 85721, USA
Biol Psychiatry 61:720-4. 2007..Although abnormalities in reward processing have been proposed to underlie attention-deficit/hyperactivity disorder (ADHD), this link has not been tested explicitly with neural probes... - Temporal reward discounting and ADHD: task and symptom specific effectsA Scheres
Psychology Department, University of Arizona, Tucson, AZ 85721, USA
J Neural Transm 115:221-6. 2008..These findings may help refine behavioral treatment approaches and models of ADHD... 
Understanding decision-making deficits in neurological conditions: insights from models of natural action selectionMichael J Frank
Departments of Psychology and Neurology, Program in Neuroscience, University of Arizona Tucson, AZ 85721, USA
Philos Trans R Soc Lond B Biol Sci 362:1641-54. 2007..Incorporation of cortical noradrenaline function into the model improves action selection in noisy environments and accounts for response variability in ADHD. We close with more general clinical implications...
Studying the relation between temporal reward discounting tasks used in populations with ADHD: a factor analysisAnouk Scheres
Psychology Department, University of Arizona, Tucson, AZ, USA
Int J Methods Psychiatr Res 19:167-76. 2010....- Temporal reward discounting in attention-deficit/hyperactivity disorder: the contribution of symptom domains, reward magnitude, and session lengthAnouk Scheres
Department of Psychology, University of Arizona, Tucson, Arizona, USA
Biol Psychiatry 67:641-8. 2010.... - Varieties of attention-deficit/hyperactivity disorder-related intra-individual variabilityF Xavier Castellanos
Institute for Pediatric Neuroscience, New York University, Child Study Center, NYU School of Medicine, New York, New York 10016, USA
Biol Psychiatry 57:1416-23. 2005..These results highlight the importance of retaining time-series data and quantitatively examining intra-subject measures of variability as a putative endophenotype for ADHD... - Delta plots in the study of individual differences: new tools reveal response inhibition deficits in AD/Hd that are eliminated by methylphenidate treatmentK Richard Ridderinkhof
Department of Psychology, University of Amsterdam, Amsterdam, Netherlands
J Abnorm Psychol 114:197-215. 2005..The beneficial effect of methylphenidate was clarified further after correcting for inter-individual variation in sensitivity to medicine dosage... - Executive functioning in boys with ADHD: primarily an inhibition deficit?Anouk Scheres
Department of Clinical Neuropsychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
Arch Clin Neuropsychol 19:569-94. 2004..This calls into question the distinctiveness of the different forms of response inhibition... - The top and the bottom of ADHD: a neuropsychological perspectiveJoseph A Sergeant
Department of Clinical Neuropsychology, Klinische Neuropsychologie, Vrije Universiteit, Van der Boechorststraat 1, 1081 BT Amsterdam, Netherlands
Neurosci Biobehav Rev 27:583-92. 2003..A widely distributed neural network involving frontal, basal ganglia, limbic and cerebellar loci seem implicated in ADHD... - The effect of methylphenidate on three forms of response inhibition in boys with AD/HDAnouk Scheres
Department of Clinical Neuropsychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
J Abnorm Child Psychol 31:105-20. 2003..However, this linear relation was due to improved inhibitory control under MPH compared to placebo, because no effects of MPH dose were observed for any of the response inhibition measures... - Which executive functioning deficits are associated with AD/HD, ODD/CD and comorbid AD/HD+ODD/CD?Jaap Oosterlaan
Department of Clinical Neuropsychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
J Abnorm Child Psychol 33:69-85. 2005..The presence of comorbid AD/HD accounts for the EF deficits in children with comorbid AD/HD+ODD/CD. These results suggest that EF deficits are unique to AD/HD and support the model proposed by R. A. Barkley (1997)... - Neural and behavioral correlates of expectancy violations in attention-deficit hyperactivity disorderSarah Durston
Sackler Institute for Developmental Psychobiology, Weill Medical College of Cornell University, New York, USA
J Child Psychol Psychiatry 48:881-9. 2007..Therefore, we hypothesized that the ability to predict the occurrence of frequent events would be compromised in ADHD, as well as the ability to adapt behavior when expectancy was violated... - Residual functional connectivity in the split-brain revealed with resting-state functional MRILucina Q Uddin
New York University Child Study Center, New York, NY 10016, USA
Neuroreport 19:703-9. 2008..Such continued interhemispheric interaction suggests that, at least in part, cortical networks in the brain can be coordinated by subcortical mechanisms...
Research Grants
- Temporal Discounting of Rewards in AD/HDAnouk Scheres; Fiscal Year: 2006..This research will contribute to a more sophisticated understanding of the role of reward preferences in symptoms of AD/HD. Ultimately, such an understanding will improve treatment strategies for this disorder. ..
- fMRI of temporal reward discounting in medication-naive adolescents with ADHDAnouk Scheres; Fiscal Year: 2007....