Read the text The elements of their experiment were as follows:
● Establish a pool of participants composed of 67 undergraduate students who had not eaten in three hours.
● Divide participants into three groups.
● Expose two groups to the aroma of chocolate chip cookies baking.
● Place plates containing chocolate chip cookies and plates containing radishes before the two groups.
● Have one group eat only chocolate chip cookies, and have the other group eat only radishes.
● Allow five minutes of unsupervised time for eating.
● Do not expose the third group to the aroma of chocolate chip cookies baking, and do not give them anything to eat.
● Assign all three groups the boring task of tracing geometric figures.
● Tell the groups to stop when they become tired or feel unable to continue.
● Monitor the three groups to determine how long each group perseveres in performing the boring assignment.
Can you guess what happened and what the experiment revealed? The result of the experiment was that the group allowed to eat only radishes gave up tracing the geometric figures earlier on average than the other two groups. Thus, the CWRU researchers judged that the effort of exercising self-control and not eating the chocolate chip cookies reduced the radish eaters’ strength for the tracing assignment.

Directions:​ Using the study above, cite an example of each term listed below. The hypothesis is shown as a model.
Hypothesis​: Exerting self-control causes fatigue.

1. Experimental group:

2. Control group:

3. Independent variable:

4. Dependent variable:

5. Conclusion: