QUANTITATIVE 2-PROCESS ANALYSIS OF AVOIDANCE-CONDITIONING IN GOLDFISH

The shuttlebox performance of goldfish was studied under standardized conditions in a variety of problems-with or without an avoidance conti ngency, a conditioned stimulus (CS)-termination contingency, and an es cape contingency. The effects of CS-only, unconditioned stimulus (US)- only, and explicitly unpaired training were also examined. All the dat a could be simulated quantitatively with a version of O.H. Mowrer's (1 947) 2-process theory expressed in 2 learning equations (1 classical, the other instrumental) and a performance equation. The good fit sugge sts that the theory is worth developing further with new experiments d esigned to challenge it.