Glossary Term
Measurement Properties (MPs)
Categories: Research Methods & Study Design
refer to the key psychometric qualities of an instrument or tool that determine how well it measures what it is intended to measure. These properties include
1. Construct validity
2. Inter-method reliability
3. Test- retest reliability
4. Longitudinal construct validity (responsiveness)
5. Clinical trial discrimination
6. Thresholds of meaning
Synonyms:
Psychometric Properties
Examples
A research team developing a new patient-reported pain scale evaluates its measurement properties by testing:
- Validity: Do scores correlate with other established pain measures?
- Reliability: Do patients give similar responses when asked the same questions one week apart?
- Responsiveness: Does the scale detect improvement after effective pain treatment?
- Interpretability: Can clinicians easily explain what a score of “”7″” means in terms of severity?
The results demonstrate that the instrument has strong validity, reliability, responsiveness, and interpretability — confirming it is suitable for clinical trials.