Validity & Reliability of NAP™ Assessments
Validity
Does the NAP™ measure the constructs it purports to measure?
- NAP correlated with existing measures of other assessments in the expected directions.
- Theoretical expectations in terms of strength and direction of correlations were confirmed.
- Validity arguments/hypotheses for the NAP assessment findings were accepted and found true.
- Correlations ranged between 0.5 – 0.8 (r²).
- Detailed report available to NAP™ practitioners
Reliability
How consistent are the NAP measures and scores across time?
- The test-retest reliabilities of the NAP assessment administered to a sample of 199 participants ranged between 0.7 – 0.9 (r²) positive correlations.
- NAP assessment is found highly reliable according to constructs tested.
- Detailed report available to NAP™ practitioners