Summary
Control-theory models of tracking behaviour imply continuous negative feedback as opposed to discrete control, and they assume the existence of a quadratic error criterion. The experimental induction of an asymmetric error criterion gives rise to a nonlinear control strategy which is used here to investigate the process of adaptation of tracking strategy to disturbances with varying statistical parameters. Results show that tracking behaviour adapts to time-varying signals, but this adaptation is not based on an estimate of the statistical parameters of the disturbance, as is assumed by an optimal-control model of tracking behaviour. It is suggested that continuous tracking behaviour is a special case induced by specific experimental conditions. In general, a view of tracking behaviour as a sequence of discrete actions seems more appropriate.
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This work was supported by Deutsche Forschungsgemeinschaft. Elke Melchior participated in this research
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Bösser, T. Adaptation to time-varying signals and control-theory models of tracking-behaviour. Psychol. Res 46, 155–167 (1984). https://doi.org/10.1007/BF00308600
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DOI: https://doi.org/10.1007/BF00308600