ON THE INFORMATION-BASED REGULATION OF MOVEMENT - WHAT WANN (1996) MAY WANT TO CONSIDER

On the basis of a critical review of studies that examined the use of temporal information in the regulation of movement, J. P. Wann (1996) concluded that there is little evidence in favor of the use of tau. Al though more experimental work is certainly needed, progress can only b e made if (a) the conceptual confusion emanating from a lack of distin ction between specification (i.e., information) and what is specified (i.e., relevant property of the environment-actor system) is resolved, and (b) the way in which information is used in the regulation of mov ement is reconsidered. It is argued that continuous control models inc orporating first-order time-to-contact related information not only ex plain the results obtained but also allow testable accounts of the pri nciples involved in kinematic trajectory formation.