Effects of a meaningful, a discriminative, and a meaningless stimulus on equivalence class formation.

@article{Fields2012EffectsOA,
  title={Effects of a meaningful, a discriminative, and a meaningless stimulus on equivalence class formation.},
  author={Lanny Fields and Erik Arntzen and Richard K Nartey and Christoffer Eilifsen},
  journal={Journal of the experimental analysis of behavior},
  year={2012},
  volume={97 2},
  pages={163-81}
}
Thirty college students attempted to form three 3-node 5-member equivalence classes under the simultaneous protocol. After concurrent training of AB, BC, CD, and DE relations, all probes used to assess the emergence of symmetrical, transitive, and equivalence relations were presented for two test blocks. When the A-E stimuli were all abstract shapes, none of 10 participants formed classes. When the A, B, D, and E stimuli were abstract shapes and the C stimuli were meaningful pictures, 8 of 10… CONTINUE READING