Linganisha mbinu

	Uchanganuzi wa Kielelezo cha Uhakiki wa Muda Mrefu	Upimaji wa Uhakikisho wa Upimaji wa Muda Mrefu
Nyanja	Saikometriki	Saikometriki
Familia	Latent structure	Latent structure
Mwaka wa asili	1970s–1990s	1993
Mwanzilishi	Karl Jöreskog (CFA framework); longitudinal extension by Wheaton, Muthén, and Alwin in the 1970s–1990s	William Meredith
Aina	Longitudinal latent variable / measurement model	Measurement model testing
Chanzo asilia	Widaman, K. F. & Reise, S. P. (1997). Exploring the measurement invariance of psychological instruments: Applications in the substance use domain. In K. J. Bryant, M. Windle & S. G. West (Eds.), The science of prevention: Methodological advances from alcohol and substance abuse research (pp. 281–324). American Psychological Association.	Meredith, W. (1993). Measurement invariance, factor analysis and factorial invariance. Psychometrika, 58(4), 525–543.
Majina mbadala	longitudinal CFA, repeated-measures CFA, longitudinal measurement model, panel CFA	LMI, longitudinal invariance, measurement equivalence across time, temporal measurement invariance
Zinazohusiana	6	3
Muhtasari	Longitudinal confirmatory factor analysis (longitudinal CFA) applies a theoretically specified measurement model to data collected at two or more time points. Its primary purpose is to verify that a scale measures the same latent construct in the same way over time — a prerequisite for drawing valid conclusions about change from repeated-measures data.	Longitudinal measurement invariance testing determines whether a psychological scale measures the same construct in the same way across two or more time points. It is a prerequisite for interpreting mean-level change scores in panel and repeated-measures studies, ensuring that observed change reflects true change in the construct rather than drift in the measurement instrument.