According to the operant conditioning explanation of Clever Hans's mathematical abilities, which of the following could be considered both a reinforcer and a discriminative stimulus?
A) The question posed to the horse
B) The food reward
C) The trainer
D) The subtle change in the questioner's appearance

Question

Quizplus · Accepted Answer

The subtle change in the questioner's appearance acted as a discriminative stimulus, signaling to Hans when to start and stop tapping, and it also reinforced the behavior by leading to rewards (like approval or treats) when Hans responded correctly to these cues.

According to the Operant Conditioning Explanation of Clever Hans's Mathematical