AP Psychologymediummcq1 pt

Classical conditioning works best when the CS is presented

A.shortly before the US
B.long after the US
C.hours before the US
D.only once ever

Explanation

Core Concept

A half-second gap is optimal — the CS predicts the US. Backward or delayed-too-long pairings produce weak conditioning.

Correct Answer

Ashortly before the US

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