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MANOVA and statitical techniques

Provide a written critique of the following article's method section. The critique will be focusing on research method section and needs to cover at least the following points:
1) Rationale for selected data analysis methods
2) Appropriateness of the data set
3) Rigor in data analysis
4) Appropriateness of result interpretation
5) Recommendations
"Personality and Organizations: A Test of the Homogeneity of Personality Hypothesis"
Schneider, Benjamin1,3; Smith, D. Brent1; Taylor, Sylvester2; Fleenor, John2
Journal of Applied Psychology
Issue: Volume 83(3), June 1998, p 462-470
Copyright: Ã?© 1998 by the American Psychological Association
Publication Type: [Feature Articles]
ISSN: 0021-9010
Accession: 00004565-199806000-00009

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1) Rationale for selected data analysis methods
2) Appropriateness of the data set
3) Rigor in data analysis
4) Appropriateness of result interpretation
5) Recommendations

Step 1
The selected data analysis method is MANOVA. The reason why MANOVA has been used is that it has the ability of measuring several dependent variables. The other reason why MANOVA has been used is that it protects against Type I errors that might occur if multiple ANOVA were conducted independently. MANOVA can also reveal differences not shown by ANOVA testing. In the article, the dependent variables are Myers-Briggs Type Indicators and the independent variable is organizational membership.
From a different point of view MANOVA gives a close control over global alpha, it enables comparisons across equations, and has a higher power of testing. In this case the MANOVA is appropriate because it shows squared canonical correlation that represents the amount of variance shared between the variable and the independent variable. To examine the extent to which organization differ with respect to the personality characteristics of the managers in them, the MANOVA analysis is appropriate. In case of this study nested MANOVA was also carried out for organizations within industries. However, because of the use of MANOVA every Y variable costs one degree of freedom. Further, the results of MANOVA were not easy to interpret.

Step 2
The data set is 12,739 managers from 142 organizations. To ensure that the data was received from appropriate managers, the modal personality profiles of managers were tested for each organization. Only those firms where at least ...

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