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In: Psychology

For each of the studies, please indicate the following: a) Independent variable(s) b) Is there more...

For each of the studies, please indicate the following:

a) Independent variable(s)

b) Is there more than one independent variable?

c) Levels of the independent variable

d) Dependent variable                     

e) Level of measurement of the DV

Will students to do better in school if you “pay for grades”? To test this question, an instructor gives students a math test. Before taking the test, half the students were told that they would receive $0.25 for every correct answer. The other half was not given a monetary incentive. The number of correct answers was recorded for each student.

Solutions

Expert Solution

a) Independent variable(s) - Monetary incentive

INDEPENDENT VARIABLE - The variable that is manipulated by the researcher to see what effect it has on the dependent variable.

b) Is there more than one independent variable? No, there is only one independent variable.

c) Levels of the independent variable - There are two levels - Experimental group and Control group. The Experimental group is the group that was paid $0.25 for each correct answer. The Control group is the group that was not paid any monetary incentive.

Experimental group is the group on which the researcher experiments. (The experiment was conducted to test whether students will perform better if they were paid for grades.) Therefore, the group that was paid was the group on which the experiment was conducted.

Control group - The group which is used for comparison of scores. Here, the group which was not paid for grades is the control group.  

d) Dependent variable - Number of correct answers on the test.

DEPENDENT VARIABLE - The variable that is dependent on the independent variable.     

e) Level of measurement of the DV - Ratio

(Levels of measurement or the scale of measurement of the Dependent variable) - Ratio

Hayet Jeridi answered 6 months ago
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