ABSTRACT
In the Mechanics of the Animate, Killeen (1992) argued for the spread of the effects of reinforcement through behavioral space along dimensions such as stimuli, time, and responses. He made the case for an exponential gradient of diffusion of effects along stimulus dimensions, and possibly along temporal and response dimensions as well. The domain of these functions cannot be arbitrary measures of the events, but rather must be psychologically scaled dimensions, in the fashion of Shepard (1987). For a behavioral theory, the key dimension is the response; but the requisite scaling of the behavioral repertoire has not begun. It is possible to proceed with the development of the mechanics for responses without dallying with psychometric scaling if we confine our attention to a single class of responses. Even within this limited domain, there is much to be said.
