Goldfish show discriminated responding by shuttling in increasingly more US paired time frames than unpaired time frames both for the successive-presentation and explicitly unpaired pseudoconditioning procedures, where measurement, in addition to the CS, is made in a comparable period of the intertriai interval just prior to the US. These data strongly question stimulus-specific interpretations of response patterns arising from the use of the successive-presentation procedure, suggest that goldfish learn a conditioned inhibition to an unpaired stimulus, and may imply that the explicitly unpaired pseudoconditioning procedure is an appropriate control, in goldfish, for the successive-presentation procedure.
Bulletin of the Psychonomic Society
Zerbolio, Dominic and Wickstra, L, "Discriminated Response Patterning in Goldfish with Successive Presentation and Explicitly Unpaired Pseudoconditioning Procedures" (1979). Psychology Faculty Works. 37.