The case of Clever Hans provided an excellent example of the fact that it is often necessary for experimenters to be _____ regarding the purpose of the experiment.
A) blind
B) well-guided
C) well-informed
D) resistant

Question

Quizplus · Accepted Answer

Clever Hans was a horse that appeared to be able to perform arithmetic and other intellectual tasks, but later it was discovered that he was responding to involuntary cues from his handler. This led to the understanding of the importance of experimenters being "blind" to the hypothesis being tested to avoid inadvertently influencing the outcome.

The Case of Clever Hans Provided an Excellent Example of the Fact