Learned irrelevance is a A) combination of Pavlovian and instrumental conditioning that results in an extremely inhibitory CS that blocks instrumental learning. B) situation in which exposure to a zero contingency between a CS and US interferes with future learning. C) type of blocking effect that occurs in multistage instrumental conditioning procedures in which learning one response reduces the ability to learn a second response. D) type of discrimination procedure in which the two stimuli that serve as the S^DandS^Δare reversed across training phases so frequently that the subject comes to ignore both stimuli.

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Learned irrelevance refers to a situation where prior exposure to a non-contingent relationship between a conditioned stimulus (CS) and an unconditioned stimulus (US) hampers the ability to learn a new association between them in the future. This occurs because the subject learns that the CS is irrelevant or has no predictive value regarding the occurrence of the US.

Learned Irrelevance Is a