Convergent Validity

Whether metrics that should be related are actually related, and metrics that should not be related are not.

Correlation matrix of all metrics across a population of operators.

Inter-metric correlations, correlation structure.

If metrics have convergent validity, related metrics (e.g., yield and leverage) should correlate, while unrelated metrics should not.

Compute the full correlation matrix. Compare observed correlations to theoretically expected relationships.

Correlation coefficients, correlation matrix structure.

Related metrics do not correlate, OR unrelated metrics correlate strongly.

Field data shows expected correlation structure (yield correlates with leverage and velocity).

Correlation does not imply causation. Small samples produce unstable correlations.

Psychometric validation methodology, SigRank field data. Architecture: mos2es.com/architecture.