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Reversal of baseline relations
in adults and children. Geraldine Leader University of Ulster, Northern Ireland The purpose of this study is to investigate the sensitivity of symmetry and equivalence relations to baseline modifications. In Condition 1, adult subjects were trained using a respondent-type training procedure to establish two three-member equivalence classes (i.e., A1B1C1 and A2B2C2). Following mastery of these relations baseline relations were reversed (i.e., A1B1C2 and A2B2C1). Condition 2 was identical to Condition 1, except that both of the original conditional discriminations were reversed (i.e., A1B2C2 and A2B1C1). In Condition 3, two four-member equivalence classes (i.e., A1B1C1D1 and A2B2C2D2) were trained to mastery prior to baseline modification (A1B2C1D2 and A2B1C2D1). Conditions 4, 5 and 6 were identical to 1, 2, and 3 except that five-year old normal functioning children were used as subjects. Results demonstrated that both symmetry and equivalence relations are sensitive to baseline modifications in both adults and young children. The theoretical implications of these findings will be discussed. Keywords: respondent-type, baseline reversal, symmetry, equivalence |
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