Dr. Smith wants to examine whether a new drug increases the maze running perform

Question

Dr. Smith wants to examine whether a new drug increases the maze running performance of older rats. Just like aging humans, older rats show signs of poorer memory for new things. Dr. Smith teaches two groups of older rats to find a piece of tasty rat chow in the maze. One group of rats is given the new drug while they are learning the maze. The second group is not given the drug. One week after having learned the maze he retests the rats and records how long it takes them to find the rat chow.

what is the independent, dependent, and the constant?

Explanation / Answer

Answer to the above problem would be:

Dependent: Time for rats to find the rat chow

Independent: New drug

Constants: age of rats, same maze

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