QuestionQuestion

An international psychologist was interested in whether a mindfulness questionnaire measures a single underlying construct, or whether there is more than one underlying construct. The questionnaire contained 15 items each requiring a response in the range 1 to 6. The responses of 95 participants to the 15 items are coded in the variables s1q1 to s1q15. In order to answer the question above, carry out a principal component analysis with direct oblimin rotation and do the following:
1. Describe the factor structure of the questionnaire.
a. How many components have eigenvalue greater than one?
b. How much total variance is accounted for?
c. Consider the scree plot: how many components does that suggest?
d. Write a brief results section, including a suitable table, to report which items load on each component.
e. Label the resulting factors based on the items you identified as loading onto them.
2. Imagine that the questionnaire had been previously validated in Macedonia, and a one-factor structure had been obtained. Alter the analysis of the current data to force a single-factor solution and report the results, repeating steps a-e from item 2 above.
3. Save and submit the SPSS syntax and output files used to complete items 1.


An international psychologist was interested in whether a mindfulness questionnaire written to gather Macedonian opinions of NATO measures a single underlying construct, or whether there is more than one underlying construct. The questionnaire contained 15 items each requiring a response in the range 1 to 6. The responses of 95 participants to the 15 items are coded in the variables s1q1 to s1q15. In order to answer the question above, you will need the results of the factor analysis conducted in the unit 13 homework assignment. For the current assignment, you will need to:
1. Conduct a reliability analysis on all items using Cronbach’s alpha.
a. Report the Cronbach’s alpha for the overall scale.
b. Indicate whether any items should be dropped from the scale if it were to be used in the future. Use the “Cronbach’s alpha if item deleted” column to defend your choice(s).
2. Conduct a reliability analysis using Cronbach’s alpha (as in item 1 above), except this time run separate analyses for each factor that was identified in part 1 of the unit 13 homework.
a. Report the Cronbac's alphas for each set of items (i.e., one analysis for the items of each factor).
b. Indicate whether any items should be dropped from each factor if it were to be used in the future. Use the "Cronbach's alpha if item deleted" column to defend your choice(s), as well as the factor loadings from the unit 13 homework.
3. Write a brief results section, including a suitable table, to report the results in items 1 and 2 above
4. Citing the results, indicate whether in future studies it makes more sense to analyze the data using the subscales identified in the factor analysis, or use an overall score.
5. Save and submit the SPSS syntax and output files used to complete items 1-2.

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