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Reliability analysis of the motivation assessment scale
1Woodland Center of Woods Services, Langhorne, PA 19047, USA.
American Journal of Mental Retardation : AJMR
|March 1, 1996
Summary
The Motivation Assessment Scale shows strong internal consistency, outperforming interrater reliability. However, difference score reliability is too low for detailed profile analysis.
Area of Science:
- Psychometrics
- Psychological Assessment
Background:
- The Motivation Assessment Scale (MAS) is a tool used to measure motivation.
- Reliability analysis is crucial for validating assessment tools.
Purpose of the Study:
- To evaluate the reliability of the Motivation Assessment Scale (MAS).
- To compare different types of reliability analyses for the MAS.
Main Methods:
- The study employed various reliability analyses on the Motivation Assessment Scale.
- Internal consistency and interrater reliability were assessed.
- Difference score reliability was also examined.
Main Results:
- Internal consistency reliability was found to be superior to interrater reliability.
- The reliability of difference scores was insufficient for profile analysis.
Conclusions:
- The MAS demonstrates adequate internal consistency for general use.
- The low reliability of difference scores limits its application in profile analysis.
- Further research may be needed to improve difference score reliability.