Specifying Turning Point in Piecewise Growth Curve Models: Challenges and Solutions

Specifying Turning Point in Piecewise Growth Curve Models: Challenges and Solutions

Piecewise growth curvemodel (PGCM) is often usedwhen the underlying growth process is not linear and is hypothesized to consist of phasic developments connected by turning points (or knots or change points). When fitting a PGCM, the conventional practice is to specify turning points a priori. However, the true turning points are often unknown and misspecifications of turning points may occur. T...

Latent Growth Curve Models

Growth curve mixture models

doi: 10.3969/j.issn.1002-0829.2012.06.009 Division of Biostatistics, Thomas Jefferson University, Philadelphia, Pennsylvania, USA *Correspondence: [email protected] Psychiatric studies often collect longitudinal data to characterize the natural history of disease in a cohort or to evaluate the effect of behavioral or pharmaceutical interventions. For example, in a recent partially ra...

(Challenges and Solutions)

This article tries to inspect the delusion of Shiite-o-phobia as one of the most important threats for Islamic Awakening. How it has appeared and how it should be handled is the most important concern of this article. The author believes that following the emergence of Islamic Awakening in Iran, strategists of international hegemony have figured out the high potential of Shiites' soft power to ...

Growth Curve Models and Statistical Diagnostics