In a classic experiment,psychology students were assigned to work either with "bright" rats or with "dull" rats,described as such by the experimenter.After a series of tests,the students' results showed that the "bright" rats had outperformed the "dull" rats.However,in fact,all the rats were of the same strain and breed;there were no preexisting differences between the groups.What caused the difference in their performance?

Question

Quizplus · Accepted Answer

The students' expectations about the rats' performance influenced their observations and behaviours. This is known as the observer-expectancy effect, where the expectations of the experimenter can unintentionally influence the behaviour or performance of the participants or subjects being observed. In this case, the experimenter's description of the rats as "bright" or "dull" influenced the students' expectations and subsequent observations.

In a Classic Experiment,psychology Students Were Assigned to Work Either