Conditional discrimination and equivalence relations: Control by negative stimuli.

@article{Johnson1993ConditionalDA,
  title={Conditional discrimination and equivalence relations: Control by negative stimuli.},
  author={Cathleen Johnson and Murray Sidman},
  journal={Journal of the experimental analysis of behavior},
  year={1993},
  volume={59 2},
  pages={333-47}
}
Three adult subjects were taught the following two-sample, two-comparison conditional discriminations (each sample is shown with its positive and negative comparison, in that order): A1-B1B2, A2-B2B1; B1-C1C2, B2-C2C1; and C1-D1D2, C2-D2D1. A teaching procedure was designed to encourage control by negative comparisons. Subjects were then tested for emergent performances that would indicate whether the baseline conditional discriminations were reflexive, symmetric, and transitive. The tests… CONTINUE READING