The Reliability and Validity of the Power-Load-Margin Inventory: A Rasch Analysis
Patrick C Hardigan1, Stanley R Cohen, Kathleen P Hagen
1Patrick C. Hardigan, Nova Southeastern University, 3200 S. University Drive, Fort Lauderdale, FL 33328, USA, Patrick@Nova.edu.
Journal of Applied Measurement
|January 16, 2016
Summary
The Power-Load-Margin Inventory (PLMI) effectively measures student academic resilience. This new instrument shows promise for assessing student support needs in higher education.
Area of Science:
- Medical Education
- Psychometrics
- Student Support
Background:
- Academic success is influenced by the balance between student stress and strength, termed 'margin'.
- A validated instrument is needed to quantify this margin in health professional students.
Purpose of the Study:
- To evaluate the psychometric properties of the newly developed Power-Load-Margin Inventory (PLMI).
- To assess the PLMI's reliability and validity for measuring student margin.
Main Methods:
- The PLMI, assessing eight domains (e.g., aptitude, motivation, health, support), was administered to 586 medical, dental, and pharmacy students.
- A Rasch rating scale model was employed to analyze the psychometric properties of the inventory.
Main Results:
- The PLMI demonstrated acceptable psychometric properties for use in medical, dental, and pharmacy education.
- The primary limitation identified was lower subscale reliability, attributed to the limited number of items per subscale.
Conclusions:
- The Power-Load-Margin Inventory (PLMI) is a psychometrically sound tool for assessing student margin in health professional programs.
- Further refinement of subscales may enhance the PLMI's overall reliability for diverse student populations.
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