This article reviews the behavioral literature on the control of goal-directed aiming and presents a multiple-process model of limb control. The model builds on recent variants of Woodworth's (1899) two-component model of speed-accuracy relations in voluntary movement and incorporates ideas about dynamic online limb control based on prior…

A theoretical frame of rhythm in skilled performance phenomena is presented, arguing that a motor system can produce movements that realize given time scales. Skilled movement is teleological; its timing is an internal schedule of target motor events arranged by the motor system for economy and expressiveness. (Author/CM)

Future investigations of motor expertise should be closely tied to conceptual developments in the motor control and learning field. Selection of methods for studying motor expertise can be guided by thorough consideration of the philosophical underpinnings of prevailing and emerging approaches. The paper discusses cognitive and ecological…

Summarizes research findings that challenge long-standing theories of infant cognition and motor development and proposes alternative theoretical models to describe skill acquisition during the first several years of life. Findings are discussed with respect to research in the area of infant speech physiology and production. (Author/CR)