Training Structures and Different Matching-to-Sample Procedures in the Formation of Equivalence Classes in Elderly People

The participants in the study were elderly people, 70 years and older. The experimental conditions were presented in a combined single-subject design and group design with reversals, where both training structures (many-to one and one-to-many), and matching-to-sample task (simultaneous matching to sample and delayed matching to sample 0 seconds) were alternated. The purpose of the experiment was to study formation of equivalence classes in elderly people, and how the responding in accordance to equivalence varied as a function of the manipulations done.