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| Longitudinel test-retest reliabilitet× | Test-Retest Reliabilitet× | |
|---|---|---|
| Fagområde | Psykometri | Psykometri |
| Familie | Latent structure | Latent structure |
| Oprindelsesår≠ | 1904 (test-retest); longitudinal application formalized mid-20th century | 1904 |
| Ophavsperson≠ | Spearman, Charles; extended to longitudinal contexts by psychometric theorists | Karl Pearson |
| Type≠ | Reliability estimation / temporal stability | Reliability estimate |
| Oprindelig kilde | Nunnally, J. C. & Bernstein, I. H. (1994). Psychometric Theory (3rd ed.). McGraw-Hill. ISBN: 978-0070478497 | Nunnally, J. C. & Bernstein, I. H. (1994). Psychometric Theory (3rd ed.). McGraw-Hill. ISBN: 978-0070478497 |
| Aliasser | longitudinal stability reliability, repeated-measurement reliability, temporal stability across waves, longitudinal retest coefficient | stability reliability, temporal stability, repeatability coefficient, TRT reliability |
| Relaterede≠ | 3 | 4 |
| Resumé≠ | Longitudinal test-retest reliability quantifies how consistently a scale or measure performs across two or more time points in a longitudinal study. It extends the classic test-retest paradigm by accounting for planned, often substantive, time lags between waves — making it essential for validating instruments used in panel, cohort, or growth-curve research. | Test-retest reliability quantifies the temporal consistency of a measure by correlating scores obtained from the same participants on two separate occasions. It is a cornerstone of psychometric validation, directly indicating whether a scale or instrument yields stable scores when the underlying construct has not changed. |
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