The phenomenon of _____ indicates that, in some circumstances, mere contiguity between a neutral stimulus and a US is insufficient for conditioning to occur.
A) blocking
B) overshadowing
C) higher-order conditioning
D) Both a and b are correct.

Question

Quizplus · Accepted Answer

Blocking and overshadowing both indicate that mere contiguity between a neutral stimulus and an unconditioned stimulus (US) is insufficient for conditioning to occur. Blocking occurs when a previously learned association prevents the association of a new stimulus with the US, while overshadowing occurs when a more salient stimulus overshadows a less salient one, preventing the less salient stimulus from being associated with the US.

The Phenomenon of _____ Indicates That, in Some Circumstances, Mere