question 2 total 17 marks an educational psychologist is investigating
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Question 2: [Total: 17 marks]
An educational psychologist is investigating how sustained attention may be improved in
adolescents, through the use of interventions. More specifically, she is looking to compare the
effectiveness of different interventions for this purpose. She recruits a group of adolescent
participants and randomly allocates each of them to one of three groups: 1) a cognitive
attention training intervention, 2) a physical activity intervention, and 3) a placebo
intervention that is unrelated to attention, which serves as the control group.
After the three groups have respectively completed their intervention programs, the
psychologist measures their sustained attention using an established assessment measure.
Higher scores on this assessment measure reflect better sustained attention, and these scores
can be taken as interval data. The data from this study are presented in the file
"PSYC1004B_A3_Q2.csv" on Moodle.
Are there any statistically significant differences in the sustained attention of the three groups
of adolescents, after they have completed their intervention programs? If so, how do their
attention levels differ from one another across the three groups? Analyze the data using
appropriate statistical procedures in JAMOVI to answer these research questions, using an
alpha criterion of 5%.
If post-hoc tests are conducted, report the respective results of all post-hoc tests, and apply
Bonferroni's correction.
Include all of the relevant JAMOVI output(s) in your answer. Report the results of both your
omnibus test and post-hoc tests (if any), in APA format. [17 marks total]
Note: The data in the data file may not be organized in a proper format/structure for
conducting the appropriate statistical test(s) in JAMOVI. Before your analysis, you may need
to restructure the data in the file and configure the variables accordingly.