Symmetry if A = B then B = A. The learner is taught when presented with the picture grapes (sample stimulus A) to select the written word grapes (sample stimulus B). When presented with the written word grapes (sample stimulus B), without additional training or reinforcement, the learner selects the picture of grapes (sample stimulus A).
Training: A child learns to match the spoken word “dog” (Stimulus A) to a picture of a dog (Stimulus B).
Symmetry: The child demonstrates symmetry by independently matching the picture of a dog (Stimulus B) to the spoken word “dog” (Stimulus A) without direct training on that specific pairing.
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