Adults

Article Abstract:

Adults were tested on two baseline conditional discriminations to investigate the nature of stimulus equivalence. Baseline and symmetry probe performances were found to be highly responsive to changes in baseline relations. On the other hand,performance on transitivity/equivalence probes did not change much among original established classes. The separation between symmetry and transitivity was not due to a particular training arrangement and stimulus functions did not change once they were established.

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Children

Article Abstract:

A study of children aged 5 to 7 tested on baseline conditional discriminations and stimulus equivalence reveals that equivalence-class performance disruption is easier among them than among adults tested in a previous study. Post-reversal probes of reflexivity, symmetry and transitivity/equivalence in the children's performance indicate some equivalence class reorganization, but inconsistency in conditional control is a predominant feature.

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Acquisition of arbitrary conditional discriminations by young normally developing children

Article Abstract:

Research indicates arbitrary conditional discrimination acquisition is difficult in children age 3-6. Results are based on 3 studies of normally developing children.

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