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Results

#1. A therapist is working with a learner on stimulus equivalence. Initially, the learner is taught to match the spoken word ‘apple’ (A) to a picture of an apple (B). Later, the picture of an apple (B) is taught to be matched to the written word ‘APPLE’ (C). To demonstrate true transitivity (an untaught AC relation), which of the following would need to occur without direct training?

The learner matches the picture of an apple to the spoken word ‘apple.’

The learner matches the spoken word ‘apple’ to the written word ‘APPLE.’

The learner matches the written word ‘APPLE’ to the picture of an apple.

The learner matches the spoken word ‘apple’ to a real apple.

Transitivity is a derived untaught stimulusstimulus relation that involves three unconditioned stimulus classes A B C where AB and BC are taught and then AC emerges without direct instruction In this scenario A spoken word apple B picture of an apple C written word APPLE The taught relations are AB spoken word to picture and BC picture to written word Therefore the derived transitive relation AC would be the learner matching the spoken word apple A to the written word APPLE C without being explicitly taught this specific relation Option A picture of an apple to spoken word apple is an example of symmetry BA while Option C written word APPLE to picture of an apple is also symmetry CB Option D introduces a new unestablished stimulus real apple not within the defined ABC equivalence class

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