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Results

#1. A behavior analyst is observing a client’s language development program focused on expanding vocabulary. Initially, the client was taught that Lobster (Stimulus A) corresponds to the concept Delicious (Stimulus B). Later, during a meal, the client was presented with Steak (Stimulus C) and independently stated, This is delicious (associating C with B). When a therapist subsequently asked the client, What is delicious? (presenting Stimulus B), the client responded, Steak (responding with Stimulus C). Which specific stimulus equivalence relation is demonstrated by the client’s response of saying Steak when asked What is delicious?

Reflexivity

Symmetry

Transitivity

Arbitrary Equivalence

Symmetry is a derived stimulusstimulus relation where if a conditional discrimination of AB has been trained then a BA relation is also observed without direct training In the given scenario the client was taught Steak C is Delicious B establishing CB The subsequent response of Steak C when asked What is delicious B demonstrates the derived relation BC This reversal of the stimulus and response functions without explicit training is the defining characteristic of symmetry Reflexivity refers to a stimulus being matched to itself AA Transitivity involves a threeterm relation AB and BC leads to AC Arbitrary equivalence refers to stimuli that do not share a physical resemblance but are related through specific learned functions

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