Mary is interested in determining if active learning strategies promote better student learning than passive learning strategies. She teaches groups of volunteer college students for one hour, using active learning strategies with half of the students in a blue room and passive learning strategies with the other half of the students in a red room. The students are then given a test over the material and Mary records the number of items each student answers correctly.

1. Who is the target population in Mary's study?

2. What is the Dependent Variable in Mary's study?

3. What is the Independent Variable in Mary's study?

4. Write the Hypothesis in Mary's study

5. Is the hypothesis in Mary's study directional or non-directional?

6. Explain what is meant by the term "operational definition" and why it is so important, specifically in the field of psychology.