Results 41 to 50 of about 11,099,772 (293)

Fitting Nonlinear Structural Equation Models in R with Package nlsem

Journal of Statistical Software, 2017
Structural equation mixture modeling (SEMM) has become a standard procedure in latent variable modeling over the last two decades (Jedidi, Jagpal, and DeSarbo 1997b; Muthén and Shedden 1999; Muthén 2001, 2004; Muthén and Asparouhov 2009).
Nora Umbach, Katharina Naumann, Holger Brandt, Augustin Kelava   +3 more
doaj   +1 more source

A Simulation Study of Polychoric Instrumental Variable Estimation in Structural Equation Models

, 2016
Copyright © Taylor & Francis Group, LLC. Data collected from questionnaires are often in ordinal scale. Unweighted least squares (ULS), diagonally weighted least squares (DWLS) and normal-theory maximum likelihood (ML) are commonly used methods to fit
Jin, Shaobo, Luo, Hao, Luo, Hao,, Yang-Wallentin, Fan, Yang-Wallentin, Fan,, Jin, Shaobo,   +5 more
core   +1 more source

Model-Based Manifest and Latent Composite Scores in Structural Equation Models

Collabra: Psychology, 2019
Composite scores are commonly used in the social sciences as dependent and independent variables in statistical models. Typically, composite scores are computed prior to statistical analyses.
Norman Rose, Wolfgang Wagner, Axel Mayer, Benjamin Nagengast   +3 more
doaj   +1 more source

Fit statistics for the structural equation models.

, 2023
Fit statistics for the structural equation models.
Zsolt Demetrovics (165595), András Spányik (13242890), Mark D. Griffiths (6645020), Dávid Simon (13242893), Adrien Rigó (4514737)   +4 more
core   +1 more source

Potential Therapeutic Targets in People with Emotional Dependency

International Journal of Psychological Research, 2019
Objective: To examine the relationship between the components of emotional dependency (ED) with anxious, depressive, and impulsive symptomatology. Method: 98 university students (68% women, age M = 20.2 years, ED = 2.19) responded to the ED Questionnaire
Mariantonia Lemos, Andrés Miguel Vásquez, Juan Pablo Román-Calderón   +2 more
doaj   +3 more sources

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Distributed-lag Linear Structural Equation Models in R: the dlsem Package

Austrian Journal of Statistics, 2019
In this paper, an extension of linear Markovian structural causal models is introduced, called distributed-lag linear structural equation models (DLSEMs), where each factor of the joint probability distribution is a distributed-lag linear regression with
Alessandro Magrini
doaj   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

Number of Subjects and Time Points Needed for Multilevel Time-Series Analysis: A Simulation Study of Dynamic Structural Equation Modeling

, 2017
Dynamic structural equation modeling (DSEM) is a novel, intensive longitudinal data (ILD) analysis framework. DSEM models intraindividual changes over time on Level 1 and allows the parameters of these processes to vary across individuals on Level 2 ...
Schultzberg, Mårten,, Mårten Schultzberg, Bengt Muthén, Muthen, Bengt,   +3 more
core   +1 more source

A General Nonlinear Multilevel Structural Equation Mixture Model

Frontiers in Psychology, 2014
In the past 2 decades latent variable modeling has become a standard tool in the social sciences. In the same time period, traditional linear structural equation models have been extended to include nonlinear interaction and quadratic effects (e.g ...
Augustin eKelava, Holger eBrandt
doaj   +1 more source