Research

Brief Summary

Validity

The following represent average validity coefficients over numerous studies.

Construct .92
Conclusion .85
Concurrent .55
Predictive .89

Reliability

The following represents mean reliability coefficients over several studies.

1 Week Test-Retest
CIAs .92
JSIs .89
CTPs .70
6 Week Test-Retest
CIAs .86
JSIs .78
CTPs .68
2 Year Test-Retest
CIAs .74
JSIs .72
CTPs .51