Research Design

 Research Design

The graph selected for the discussion is Graph 1.

Research Question

Can the colour of a test paper determine a student’s performance on the test?

Independent Variables

Condition 1: During the first test

Condition 2: During the second test

Group 1: Students that sat for tests with the same colour test paper

Group 2: Students that sat for tests with a different coloured test paper

Dependent Variables: Test Scores

In this hypothetical study, a researcher wanted to know whether the change in the colour of the test paper affected how students performed on tests. The study was conducted over two periods, representing each of the conditions. In two-group experimental designs, a researcher usually includes two groups and two conditions (Perugini et al., 2018; Xu et al., 2019). The first condition was during the first test, while the second condition was during the second test. The same test was repeated after one hour to complete the experiment. The first group in the experiment entailed students who sat for the test using the same colour test paper for both the first and second experiments. The second group consisted of students who sat for the test using one colour of paper on the first test and a different colour paper during the second test. The scores for the students in each of these tests were recorded at the end of the test, and the scores for the two groups of students were compared.

The students from both groups had almost the same average test scores on the first test. However, in the second test, the students who did not get their test paper colour changed had a higher average test score than students who had their test paper colour changed. Therefore, based on this experiment, one can conclude that changing the colour of a test paper can affect a student’s test score. A change of colour in the test paper might affect students’ thinking since they were already accustomed to a certain colour of the test paper. Nevertheless, factors other than the colour of the test paper might have affected the students’ test scores.

References

Perugini, M., Gallucci, M., & Costantini, G. (2018). A Practical Primer To Power Analysis for Simple Experimental Designs. International Review of Social Psychology, 31(1). https://doi.org/10.5334/irsp.181

Xu, C. C., Li, D., Mau, T., McPherson, E., Du, M., & Zhang, S. (2019). Paired versus two-group experimental design for rheological studies of vocal fold tissues. Journal of Biomechanics, 83, 150–156. https://doi.org/10.1016/j.jbiomech.2018.11.040

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In this discussion, we will examine the components of research data. Select one of the two graphs and post a hypothetical experiment that corresponds to the graph.

Research Design

Define the groups, conditions (x-axis), and outcome (dependent variable) that was measured (y-axis).