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Feldman, Betsy J.; Rabe-Hesketh, Sophia – Journal of Educational and Behavioral Statistics, 2012
In longitudinal education studies, assuming that dropout and missing data occur completely at random is often unrealistic. When the probability of dropout depends on covariates and observed responses (called "missing at random" [MAR]), or on values of responses that are missing (called "informative" or "not missing at random" [NMAR]),…
Descriptors: Dropouts, Academic Achievement, Longitudinal Studies, Computation
Myers, Nicholas D.; Chase, Melissa A.; Beauchamp, Mark R.; Jackson, Ben – Educational and Psychological Measurement, 2010
The purpose of this validity study was to improve measurement of athletes' evaluations of their head coach's coaching competency, an important multidimensional construct in models of coaching effectiveness. A revised version of the Coaching Competency Scale (CCS) was developed for athletes of high school teams (APCCS II-HST). Data were collected…
Descriptors: Athletes, Factor Structure, Measures (Individuals), Factor Analysis
Noh, Younghee – Journal of Librarianship and Information Science, 2011
In today's world, the surrounding environment and organizations are constantly requiring individuals to engage in lifelong learning and develop boundaryless careers. In this paper, the antecedents of career movement for librarians or those working in related organizations will be identified and conceptualized. To this end, this study establishes a…
Descriptors: Careers, Lifelong Learning, Career Change, Librarians
A Class of Population Covariance Matrices in the Bootstrap Approach to Covariance Structure Analysis
Yuan, Ke-Hai; Hayashi, Kentaro; Yanagihara, Hirokazu – Multivariate Behavioral Research, 2007
Model evaluation in covariance structure analysis is critical before the results can be trusted. Due to finite sample sizes and unknown distributions of real data, existing conclusions regarding a particular statistic may not be applicable in practice. The bootstrap procedure automatically takes care of the unknown distribution and, for a given…
Descriptors: Multivariate Analysis, Statistical Analysis, Statistical Inference, Matrices
McGee, Jennifer Richardson – ProQuest LLC, 2012
The purpose of this study was the development and validation of an instrument to measure the self-efficacy of elementary mathematics teachers. Self-efficacy, as defined by Bandura, was the theoretical framework for the development of the instrument. The complex belief systems of mathematics teachers, as touted by Ernest (1989) provided insight…
Descriptors: Factor Analysis, Validity, Self Efficacy, Mathematics Instruction
Beaujean, A. Alexander; Firmin, Michael W.; Michonski, Jared D.; Berry, Theodore; Johnson, Courtney – Assessment, 2010
This study assessed trait validity of the Reynolds Intellectual Assessment Scales' (RIAS) Verbal Index (VIX) and Nonverbal Index (NIX) scores in a group of college students. Using both observation of patterns and latent variable modeling of a multitrait-multimethod correlation/covariance matrix, the results indicate that the RIAS VIX scores…
Descriptors: Multitrait Multimethod Techniques, College Students, Intelligence Tests, Test Validity
Maydeu-Olivares, Alberto; Hernandez, Adolfo – Multivariate Behavioral Research, 2007
The interpretation of a Thurstonian model for paired comparisons where the utilities' covariance matrix is unrestricted proved to be difficult due to the comparative nature of the data. We show that under a suitable constraint the utilities' correlation matrix can be estimated, yielding a readily interpretable solution. This set of identification…
Descriptors: Identification, Structural Equation Models, Matrices, Comparative Analysis
Hayashi, Kentaro; Arav, Marina – Educational and Psychological Measurement, 2006
In traditional factor analysis, the variance-covariance matrix or the correlation matrix has often been a form of inputting data. In contrast, in Bayesian factor analysis, the entire data set is typically required to compute the posterior estimates, such as Bayes factor loadings and Bayes unique variances. We propose a simple method for computing…
Descriptors: Bayesian Statistics, Factor Analysis, Correlation, Matrices
Sijtsma, Klaas – Psychometrika, 2009
This discussion paper argues that both the use of Cronbach's alpha as a reliability estimate and as a measure of internal consistency suffer from major problems. First, alpha always has a value, which cannot be equal to the test score's reliability given the inter-item covariance matrix and the usual assumptions about measurement error. Second, in…
Descriptors: Measurement, Error of Measurement, Scores, Computation
Murphy, Daniel L.; Pituch, Keenan A. – Journal of Experimental Education, 2009
The authors examined the robustness of multilevel linear growth curve modeling to misspecification of an autoregressive moving average process. As previous research has shown (J. Ferron, R. Dailey, & Q. Yi, 2002; O. Kwok, S. G. West, & S. B. Green, 2007; S. Sivo, X. Fan, & L. Witta, 2005), estimates of the fixed effects were unbiased, and Type I…
Descriptors: Sample Size, Computation, Evaluation Methods, Longitudinal Studies
Thoonen, Erik E. J.; Sleegers, Peter J. C.; Oort, Frans J.; Peetsma, Thea T. D.; Geijsel, Femke P. – Educational Administration Quarterly, 2011
Purpose: Although it is expected that building schoolwide capacity for teacher learning will improve teaching practices, there is little systematic evidence to support this claim. This study aimed to examine the relative impact of transformational leadership practices, school organizational conditions, teacher motivational factors, and teacher…
Descriptors: Evidence, Teacher Motivation, Educational Change, Foreign Countries
Ryoo, Ji Hoon – Multivariate Behavioral Research, 2011
Model building or model selection with linear mixed models (LMMs) is complicated by the presence of both fixed effects and random effects. The fixed effects structure and random effects structure are codependent, so selection of one influences the other. Most presentations of LMM in psychology and education are based on a multilevel or…
Descriptors: Models, Selection, Data Analysis, Longitudinal Studies
Rojahn, Johannes; Rowe, Ellen W.; Kasdan, Shana; Moore, Linda; van Ingen, Daniel J. – Research in Developmental Disabilities: A Multidisciplinary Journal, 2011
Progress in clinical research and in empirically supported interventions in the area of psychopathology in intellectual disabilities (ID) depends on high-quality assessment instruments. To this end, psychometric properties of four instruments were examined: the "Aberrant Behavior Checklist" (ABC), the "Assessment of Dual…
Descriptors: Check Lists, Mental Retardation, Validity, Factor Structure
Yang-Wallentin, Fan; Joreskog, Karl G.; Luo, Hao – Structural Equation Modeling: A Multidisciplinary Journal, 2010
Ordinal variables are common in many empirical investigations in the social and behavioral sciences. Researchers often apply the maximum likelihood method to fit structural equation models to ordinal data. This assumes that the observed measures have normal distributions, which is not the case when the variables are ordinal. A better approach is…
Descriptors: Structural Equation Models, Factor Analysis, Least Squares Statistics, Computation
Wanstrom, Linda – Multivariate Behavioral Research, 2009
Second-order latent growth curve models (S. C. Duncan & Duncan, 1996; McArdle, 1988) can be used to study group differences in change in latent constructs. We give exact formulas for the covariance matrix of the parameter estimates and an algebraic expression for the estimation of slope differences. Formulas for calculations of the required sample…
Descriptors: Sample Size, Effect Size, Mathematical Formulas, Computation