Title: Attenuation of blocking with the omission of a delayed US
Abstract: Two experiments used rats in a CER paradigm to examine the relationship between static-cue conditioning and the attenuation of blocking with a US-omission procedure. Experiment 1 showed that the attenuation of blocking was correlated with static-cue conditioning. Experiment 2 showed that manipulations that normally enhance static-cue conditioning resulted in the attenuation of blocking effect. The implications of these results for current theories of Pavlovian conditioning are discussed.