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Russell Schachar; Jennifer Crosbie – Journal of Attention Disorders, 2024
Objective: To examine the theoretical and empirical contribution of Joe Biederman and his colleagues to the understanding of executive function (EF) and ADHD. Method: We searched PubMed for references to EF in Biederman's publications and conducted a narrative review of this literature. Results: In 50 or more papers using neuropsychological tests,…
Descriptors: Attention Deficit Hyperactivity Disorder, Executive Function, Research, Etiology
Magnus, Brooke E.; Liu, Yang – Educational and Psychological Measurement, 2022
Questionnaires inquiring about psychopathology symptoms often produce data with excess zeros or the equivalent (e.g., none, never, and not at all). This type of zero inflation is especially common in nonclinical samples in which many people do not exhibit psychopathology, and if unaccounted for, can result in biased parameter estimates when…
Descriptors: Symptoms (Individual Disorders), Psychopathology, Research Methodology, Probability

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