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| Pitkittäisen reliabiliteetin analyysi× | Testi-uusintatestausreliabiliteetti× | |
|---|---|---|
| Tieteenala | Psykometriikka | Psykometriikka |
| Menetelmäperhe | Latent structure | Latent structure |
| Syntyvuosi≠ | 1951–1979 | 1904 |
| Kehittäjä≠ | Paul B. Baltes, John R. Nesselroade, Lee J. Cronbach (foundational contributors) | Karl Pearson |
| Tyyppi≠ | Reliability assessment | Reliability estimate |
| Alkuperäislähde≠ | Baltes, P. B., & Nesselroade, J. R. (1979). History and rationale of longitudinal research. In J. R. Nesselroade & P. B. Baltes (Eds.), Longitudinal research in the study of behavior and development (pp. 1–39). Academic Press. link ↗ | Nunnally, J. C. & Bernstein, I. H. (1994). Psychometric Theory (3rd ed.). McGraw-Hill. ISBN: 978-0070478497 |
| Rinnakkaisnimet | repeated-measures reliability, longitudinal consistency assessment, temporal reliability analysis, reliability over time | stability reliability, temporal stability, repeatability coefficient, TRT reliability |
| Liittyvät | 4 | 4 |
| Tiivistelmä≠ | Longitudinal reliability analysis evaluates the consistency and stability of measurement instruments across two or more time points. It extends classical reliability concepts — internal consistency, test-retest stability, and measurement precision — to repeated-measures designs, ensuring that observed score changes reflect true change rather than measurement error. | 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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