Search results for "Polychoric correlation"
showing 4 items of 4 documents
A Monte Carlo study comparing PIV, ULS and DWLS in the estimation of dichotomous confirmatory factor analysis
2012
We conducted a Monte Carlo study to investigate the performance of the polychoric instrumental variable estimator (PIV) in comparison to unweighted least squares (ULS) and diagonally weighted least squares (DWLS) in the estimation of a confirmatory factor analysis model with dichotomous indicators. The simulation involved 144 conditions (1,000 replications per condition) that were defined by a combination of (a) two types of latent factor models, (b) four sample sizes (100, 250, 500, 1,000), (c) three factor loadings (low, moderate, strong), (d) three levels of non-normality (normal, moderately, and extremely non-normal), and (e) whether the factor model was correctly specified or misspecif…
Adaptación y estudio de las propiedades psicométricas del Cuestionario de consecuencias de consumo de alcohol en jóvenes, forma breve, en muestra esp…
2020
El objetivo de este trabajo es presentar la adaptación y estudio de las propiedades psicométricas del Cuestionario de consecuencias de consumo de alcohol en jóvenes, forma breve (B-YAACQ) en una muestra de 323 estudiantes de Psicología españoles, de los cuales el 74.3% son mujeres. Se realizó una retro-traducción de los ítems siguiendo las normas de la ITC, y un análisis factorial confirmatorio (AFC) con el programa Mplus mediante el método de extracción WLSMV y la matriz de correlaciones policóricas. El AFC arrojó resultados satisfactorios sobre el modelo unidimensional, con muy buenos indicadores de ajuste. Todas las saturaciones factoriales presentaron valores adecuados y fueron estadíst…
Addiction-Like Mobile Phone Behavior – Validation and Association With Problem Gambling
2018
Mobile phone use and its potential addiction has become a point of interest within the research community. The aim of the study was to translate and validate the Test of Mobile Dependence (TMD), and to investigate if there are any associations between mobile phone use and problem gambling. This was a cross-sectional study on a Swedish general population. A questionnaire consisting of a translated version of the TMD, three problem gambling questions (NODS-CLiP) together with two questions concerning previous addiction treatment was published online. Exploratory factor analysis based on polychoric correlations was performed on the TMD. Independent samples T-tests, Mann-Whitney test, logistic …
Genetic and environmental influences on non-specific neck pain in early adolescence: A classical twin study
2012
Background Prevalence of neck pain has increased among adolescents. The origins of adult chronic neck pain may lie in late childhood, but for early prevention, more information is needed about its aetiology. We investigated the relative roles of genetic and environmental factors in early adolescent neck pain with a classic twin study. Methods Frequency of neck pain was assessed with a validated pain questionnaire in a population-based sample of nearly 1800 pairs of 11–12-year-old Finnish twins. Twin pair similarity for neck pain was quantified by polychoric correlations, and variance components were estimated with biometric structural equation modelling. Results Prevalence of neck pain repo…