Inhibition and superconditioning.

Superconditioning is said to occur when learning an association between a conditioned stimulus (CS) and unconditioned stimulus (US) isfacilitated by pairing the CS with the US in the presence of a previously established conditioned inhibitor. Previous demonstrations of superconditioning have been criticized because their control conditions have allowed alternative interpretations. Using a within-subjects autoshaping procedure, the present study unambiguously demonstrated superconditioning. The results support the view that super-conditioning is the symmetric opposite of blocking.