A researcher is interested in the effects of cocaine on learning. A group of rat

Question

A researcher is interested in the effects of cocaine on learning. A group of rats is randomly assigned to receive either cocaine or a non-harmful saline solution. The rats are taught how to run a maze. The cocaine rats need to be reared away from the control group rats, so they are handled and taught by one experimenter, and the control group rats are handled and taught by another experimenter. The results showed that the control group rats learned how to run the maze more quickly than the cocaine rats.

1.What is the indepedent variable?

2.What is the dependent variable?

3. How many levels are there for the independent variable?

4.What is the confound?

5. How could the confound be fixed?

Explanation / Answer

1.The independent variable is Cocaine.

2. The dependent variable is learning.

3. There are total two levels of independent variable i.e. cociane and salime solution .

4. The confound is extraneous variable that researcher cannot control.

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