A Professor Wanted to Examine the Effects of Diet on Learning

Multiple Choice

A professor wanted to examine the effects of diet on learning. He put some laboratory rats on a starvation diet (Group A) but eliminated only desserts from the diet of a second group (Group B) . During the experiment, the professor discovered that he needed more Group B rats, so he caught some in a local alley. The results of the experiment showed that Group B rats were faster at learning a maze, so the professor concluded that diet is related to learning speed. Which of the following statements is the most accurate?

A) The professor's conclusion is correct.
B) The professor's conclusion is incorrect because the rats in Group A were on a different diet than the rats in Group B.
C) The professor's conclusion is incorrect because the type of rat was a confound.
D) The professor has used a double-blind procedure.