ABSTRACT
In studying the published research literature on motor behavior, I find it easy to come to the conclusion that motor responses are of basically two types. The notion of categorizing things into dichotomies certainly has precedent in all fields of science; in fact, Robert Benchley, the English humorist, believed that the people of the world can be neatly divided into two classes: (1) those people who believe that the world can be divided into two kinds of people; and (2) those people who do not. I want to begin this chapter with a discussion of why I think the literature indicates that motor responses can be dichotomized, and then I turn to a more complete discussion of one of those kinds of movements.
