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SOCIAL DESIRABILITY AND THE TSC MMPI SCALES.
Multivariate Behavioral Research
|January 26, 2016
Summary
This study analyzed seven Minnesota Multiphasic Personality Inventory (MMPI) scales, finding significant overlap. All scales loaded heavily on the first principal component, indicating considerable redundancy among these personality assessment tools.
Area of Science:
- Psychometrics
- Personality Assessment
Background:
- The Minnesota Multiphasic Personality Inventory (MMPI) is a widely used personality assessment tool.
- Understanding the internal structure and scale interrelationships of the MMPI is crucial for accurate interpretation.
Purpose of the Study:
- To intercorrelate and factor analyze seven newly developed Minnesota Multiphasic Personality Inventory (MMPI) scales by Tryon, Stein, and Chu (TSC).
- To examine the relationship of these TSC scales to the primary principal components of the MMPI.
Main Methods:
- Principal components factor analysis was applied to the seven TSC scales.
- Three established MMPI marker scales (SD, R, and L) were included to identify the first three principal components.
Main Results:
- All seven TSC scales demonstrated substantial loadings (≥ .61) on the first principal component.
- The first principal component was strongly marked by the SD scale (loading of -.90).
- Each of the seven TSC scales exhibited its highest loading on this first principal component.
Conclusions:
- The seven TSC scales show considerable redundancy.
- These scales appear to measure a common underlying construct primarily related to the first principal component of the MMPI.
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