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McDowell, J. J.; Caron, Marcia L.; Kulubekova, Saule; Berg, John P. – Journal of the Experimental Analysis of Behavior, 2008
Virtual organisms animated by a computational theory of selection by consequences responded on symmetrical and asymmetrical concurrent schedules of reinforcement. The theory instantiated Darwinian principles of selection, reproduction, and mutation such that a population of potential behaviors evolved under the selection pressure exerted by…
Descriptors: Reinforcement, Behavior, Intervals, Numbers
Romano, Elisa; Baillargeon, Raymond H.; Tremblay, Richard E. – Human Resources Development Canada, 2002
Hyperactivity, impulsivity, and inattention are among the most common behaviour problems in children. The aim of this study was to estimate the prevalence of hyperactivity-impulsivity and inattention in the Canadian population of 2-11-year-old girls and boys, using data from the first National Longitudinal Survey of Children and Youth (NLSCY)…
Descriptors: Incidence, Probability, Public Policy, Health Services