Arrange the pairings of US and CS in classical conditioning in terms of onset of US in relation to CS starting from the earliest

A. Backward

B. Simultaneous

C. Delayed

D. Trace

Choose the correct answer from the options given below:

1. AA, B, C, D
2. BD, B, C, A
3. CC, D, B, A
4. DD, C, A, B

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: A. A, B, C, D

Explanation

Ordered by how early the US begins relative to the CS: backward (US first), simultaneous, delayed, trace (US after the CS has ended).