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	Kesahan Kandungan Longitudinal	Analisis Kebolehpercayaan Melintang
Bidang	Psikometrik	Psikometrik
Keluarga	Latent structure	Latent structure
Tahun asal	1995–2000	1951–1979
Pengasas	Haynes, Richard & Kubany (1995); extended to longitudinal contexts by measurement invariance researchers	Paul B. Baltes, John R. Nesselroade, Lee J. Cronbach (foundational contributors)
Jenis	Validity evaluation technique	Reliability assessment
Sumber perintis	Haynes, S. N., Richard, D. C. S., & Kubany, E. S. (1995). Content validity in psychological assessment: A functional approach to concepts and methods. Psychological Assessment, 7(3), 238–247.	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.
Alias	longitudinal content validation, temporal content validity, repeated-measure content validity, content validity over time	repeated-measures reliability, longitudinal consistency assessment, temporal reliability analysis, reliability over time
Berkaitan	6	4
Ringkasan	Longitudinal content validity evaluates whether the items of a measure adequately and consistently represent the intended content domain not only at a single point in time but across repeated administrations. It ensures that the conceptual coverage of a scale remains appropriate and stable as measurement occasions accumulate over a study period.	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.