विधियों की तुलना करें

	अनुदैर्ध्य पैमाना विकास	अनुदैर्ध्य मापन निश्चरता परीक्षण
क्षेत्र	मनोमिति	मनोमिति
परिवार	Latent structure	Latent structure
उद्भव वर्ष	1990s–2000s	1993
प्रवर्तक	Meredith, Millsap, and colleagues	William Meredith
प्रकार	Scale construction framework	Measurement model testing
मौलिक स्रोत	Millsap, R. E. (2011). Statistical Approaches to Measurement Invariance. Routledge. ISBN: 978-0805864311	Meredith, W. (1993). Measurement invariance, factor analysis and factorial invariance. Psychometrika, 58(4), 525–543.
उपनाम	LSD, longitudinal measurement development, repeated-measures scale construction, scale development with panel data	LMI, longitudinal invariance, measurement equivalence across time, temporal measurement invariance
संबंधित	6	3
सारांश	Longitudinal scale development is the systematic process of constructing and validating a measurement instrument using data collected at multiple time points. It extends classical scale development by additionally testing whether the scale measures the same construct in the same metric across occasions, enabling valid tracking of change over time.	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.