Stimulus Equivalence Reflexivity Symmetry Transitivity

Reflexivity this concept looks at a learner being able to select a stimulus matched to itself.

Stimulus equivalence reflexivity symmetry transitivity. Is formed if all stimuli in that set are reflexive symmetrical and transitive with each other. The condition in which two or more related stimuli elicit the same response stimuli meet the mathematical definition of equivalence if they can be shown to exhibit reflexivity symmetry and transitivity. These concepts can be seen in figure 1.

In equivalence relations barnes 1994. Amanda mecker a board certified behavior analyst at brett dinovi associates provides a definition of stimulus equivalence as well as examples of audio o. Stimulus equivalence is demonstrated when reflexivity symmetry and transitivity are demonstrated i e.

For example knowing that a a. Important characteristics of transitivity. Equivalence class a set of arbitrary stimuli that need not to have common physical properties.

Sidman tailby 1982. An untrained relation between two physically dissimilar stimuli a and c. If a b and b c the learner derives the relation that a c.

To fulfill this definition an equivalence relation has to posses all three of these properties. It is considered to be a sufficient test for stimulus equivalence because it simultaneously evaluates both symmetry and transitivity reflexivity is assumed. Accurate responding to an untrained undiscriminated stimulus demonstrating reflexivity symmetry transitivity reflexivity in the absence of direct training the operant matches a stimulus to itself shown a picture of a bike the operant choses the picture of a bike not the car or house.