Difference between reliability and validityReliability is the extent to which how you measure a variable or concept is consistent, so that repeated measures would yield similar results.
Validity is the extent to which you actually measure what you say you are measuring.
Validity is the extent to which you actually measure what you say you are measuring.
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Below is a synopsis of selected research on the WOWI.
Validity
The following represent average validity coefficients over numerous studies.
Reliability
The following represent mean reliability coefficients over several studies.
Below is a synopsis of selected research on the WOWI.
Validity
The following represent average validity coefficients over numerous studies.
| Construct | .92 |
| Conclusion | .85 |
| Concurrent | .55 |
| Predictive | .89 |
Reliability
The following represent 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 |
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Lead Programmer: Tara Munier
Lead Programmer: Tara Munier