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| Analisi Longitudinale degli Item× | Attendibilità Test-Retest× | |
|---|---|---|
| Campo | Psicometria | Psicometria |
| Famiglia | Latent structure | Latent structure |
| Anno di origine≠ | 1990s–2000s | 1904 |
| Ideatore≠ | Vandenberg, Lance, Meade and colleagues in organizational/educational measurement | Karl Pearson |
| Tipo≠ | Item-level longitudinal diagnostic | Reliability estimate |
| Fonte seminale≠ | Meade, A. W., Johnson, E. C. & Braddy, P. W. (2008). Power and sensitivity of alternative fit indices in tests of measurement invariance. Journal of Applied Psychology, 93(3), 568–592. DOI ↗ | Nunnally, J. C. & Bernstein, I. H. (1994). Psychometric Theory (3rd ed.). McGraw-Hill. ISBN: 978-0070478497 |
| Alias | LIA, repeated-measures item analysis, longitudinal item calibration, item parameter stability analysis | stability reliability, temporal stability, repeatability coefficient, TRT reliability |
| Correlati≠ | 6 | 4 |
| Sintesi≠ | Longitudinal item analysis examines how the statistical properties of individual scale items — difficulty, discrimination, factor loadings, and fit — remain stable or change systematically across repeated measurement occasions. It is the item-level foundation of longitudinal measurement validity. | 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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