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van Swieten, Lisa M.; van Bergen, Elsje; Williams, Justin H. G.; Wilson, Andrew D.; Plumb, Mandy S.; Kent, Samuel W.; Mon-Williams, Mark A. – Journal of Experimental Psychology: Human Perception and Performance, 2010
Grip selection tasks have been used to test "planning" in both autism and developmental coordination disorder (DCD). We differentiate between "motor" and "executive" planning and present a modified motor planning task. Participants grasped a cylinder in 1 of 2 orientations before turning it clockwise or anticlockwise.…
Descriptors: Autism, Developmental Disabilities, Perceptual Motor Coordination, Cognitive Processes
Rapp, John T.; Vollmer, Timothy R.; St. Peter, Claire; Dozier, Claudia L.; Cotnoir, Nicole M. – Journal of Applied Behavior Analysis, 2004
Three experiments were conducted to evaluate response allocation of stereotypy during free-operant and restricted-operant conditions. Five children with autism or related developmental disabilities participated in at least one and up to three of the experiments. In Experiment 1, the stereotypic response that emerged as most probable during a…
Descriptors: Developmental Disabilities, Autism, Object Manipulation
Gutierrez, Anibal, Jr.; Vollmer, Timothy R.; Dozier, Claudia L.; Borrero, John C.; Rapp, John T.; Bourret, Jason C.; Gadaire, Dana – Journal of Applied Behavior Analysis, 2007
Acquisition of verbal behavior is a major goal of interventions for children with developmental disabilities. We evaluated the effectiveness of manipulation of an establishing operation for functional discriminated mands. Four individuals with developmental disabilities participated in a training procedure designed to teach two separate mands for…
Descriptors: Verbal Stimuli, Developmental Disabilities, Motivation, Intervention