ABSTRACT
The first decades of the cognitive revolution were marked by considerably less effort devoted to the study of behavioral-production processes than to input processing. Studies of perception, comprehension, and memory for input information multiplied, but with some notable exceptions (e.g., the motor-control literature; see Stelmach, 1976), there was little focus on the nature of the output system. Thus, writing in 1977, Turvey observed that “while theories of perception abound, theories of action are conspicuous by their absence” (p. 211; see also, Clippenger, 1977; Weiner & Goodenough, 1977).
