Based on investigations with the horse Clever Hans,an important factor researchers should seek to control when testing whether dogs can sniff cancer in urine samples is
A)whether the dogs are tested indoors or outdoors.
B)whether,during testing,the dogs can see people who know which samples came from cancer patients.
C)that the urine samples should all come from a diverse group of patients.
D)that some samples should come from people and some from horses.

Question

Quizplus · Accepted Answer

The Clever Hans phenomenon demonstrated that animals can inadvertently pick up on subtle cues from their handlers, which can affect their behavior. In order to ensure the validity of the study on whether dogs can sniff cancer in urine samples, it is crucial to control for potential cues that the dogs may pick up from their handlers, such as visual cues from people who know which samples came from cancer patients. Therefore, option B is the correct answer. Options A, C, and D are not relevant factors to control for in this particular study.

Based on Investigations with the Horse Clever Hans,an Important Factor