The vocal response “cat” made as a result of hearing someone say “cat,” for example, has point-to-point correspondence between the stimulus and the response. The “c” sound of the stimulus controls the “c” sound in the first part of the response, the “a” sound in the stimulus controls the second part of the response, and the “t” sound controls the final part of the response.
A relationship between a discriminative stimulus and the response it controls with the following features:
The discriminative stimulus must have two or more components
The response must have two or more components
The first part of the stimulus must control the first part of the response, the second part of the stimulus must control the second part of the response, etc.
Formal or dynamic characteristics of the stimulus
Formal or dynamic characteristics of the response