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Berghella, Tina; Molenaar, John; Wyse, Linda – National Centre for Vocational Education Research (NCVER), 2006
This report examines the extent and nature of professional development required to meet the current and future needs of Workplace English Language and Literacy Programme practitioners. While the working environment for such practitioners is becoming more complex, with greater demands on them to have industry knowledge and project management…
Descriptors: English, Faculty Development, Literacy Education, Foreign Countries
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Molenaar, Peter C. M.; Sinclair, Katerina O.; Rovine, Michael J.; Ram, Nilam; Corneal, Sherry E. – Developmental Psychology, 2009
Individuals change over time, often in complex ways. Generally, studies of change over time have combined individuals into groups for analysis, which is inappropriate in most, if not all, studies of development. The authors explain how to identify appropriate levels of analysis (individual vs. group) and demonstrate how to estimate changes in…
Descriptors: Individual Development, Parent Child Relationship, Time Perspective, Models
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Wicherts, Jelte M.; Borsboom, Denny; Kats, Judith; Molenaar, Dylan – American Psychologist, 2006
The origin of the present comment lies in a failed attempt to obtain, through e-mailed requests, data reported in 141 empirical articles recently published by the American Psychological Association (APA). Our original aim was to reanalyze these data sets to assess the robustness of the research findings to outliers. We never got that far. In June…
Descriptors: Psychology, Psychological Studies, Ethics, Research Methodology
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Hamaker, Ellen L.; Dolan, Conor V.; Molenaar, Peter C. M. – Multivariate Behavioral Research, 2005
Results obtained with interindividual techniques in a representative sample of a population are not necessarily generalizable to the individual members of this population. In this article the specific condition is presented that must be satisfied to generalize from the interindividual level to the intraindividual level. A way to investigate…
Descriptors: Research Methodology, Multivariate Analysis, Psychological Studies, Modeling (Psychology)
Molenaar, Marie – 1983
The two reports compiled here are intended as aids in evaluating and planning future educational efforts for handicapped students in New Jersey. The reports include a census of handicapped pupils, their programs, the service delivery personnel and special education due process cases for the 1980-81, 1981-82, and 1982-83 school years. Each report…
Descriptors: Age Differences, Classification, Disabilities, Due Process
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Dolan, Conor V.; Wicherts, Jelte M.; Molenaar, Peter C. M. – Structural Equation Modeling, 2004
We consider the question of how variation in the number and reliability of indicators affects the power to reject the hypothesis that the regression coefficients are zero in latent linear regression analysis. We show that power remains constant as long as the coefficient of determination remains unchanged. Any increase in the number of indicators…
Descriptors: Error of Measurement, Factor Analysis, Regression (Statistics), Evaluation Methods
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Raijmakers, Maartje E. J.; Molenaar, Peter C. M. – Developmental Science, 2004
Neural networks are applied to a theoretical subject in developmental psychology: modeling developmental transitions. Two issues that are involved will be discussed: discontinuities and acquiring qualitatively new knowledge. We will argue that by the appearance of a bifurcation, a neural network can show discontinuities and may acquire…
Descriptors: Classification, Developmental Psychology, Neurological Organization, Brain Hemisphere Functions
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Molenaar, Ivo W. – Applied Psychological Measurement, 2001
Discusses relationships between a mathematical measurement model and its real-world applications. Makes a distinction between large-scale data matrices commonly found in educational measurement and smaller matrices found in attitude and personality measurement. Also evaluates nonparametric methods for estimating item response functions and…
Descriptors: Attitude Measures, Estimation (Mathematics), Item Response Theory, Models
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Dennis, Tracy A.; Buss, Kristin A.; Hastings, Paul D.; Bell, Martha Ann; Diaz, Anjolii; Adam, Emma K.; Miskovic, Vladimir; Schmidt, Louis A.; Feldman, Ruth; Katz, Lynn Fainsilber; Rigterink, Tami; Strang, Nicole M.; Hanson, Jamie L.; Pollak, Seth D.; Dahl, Ronald E.; Silk, Jennifer S.; Siegle, Greg J.; Beauchaine, Theodore P.; Cicchetti, Dante; Rogosch, Fred A.; Fox, Nathan A.; Kirwan, Michael; Reeb-Sutherland, Bethany; Gunnar, Megan R.; Obradovic, Jelena; Boyce, W. Thomas; Molenaar, Peter C. M.; Gates, Kathleen M. – Monographs of the Society for Research in Child Development, 2012
In the past decade, there has been a dramatic growth in research examining the development of emotion from a physiological perspective. However, this widespread use of physiological measures to study emotional development coexists with relatively few guiding principles, thus reducing opportunities to move the field forward in innovative ways. The…
Descriptors: Physiology, Psychological Patterns, Emotional Development, Measurement
Molenaar, Ivo W. – 1978
The technical problems involved in obtaining Bayesian model estimates for the regression parameters in m similar groups are studied. The available computer programs, BPREP (BASIC), and BAYREG, both written in FORTRAN, require an amount of computer processing that does not encourage regular use. These programs are analyzed so that the performance…
Descriptors: Ability Identification, Algorithms, Bayesian Statistics, Computer Programs
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Molenaar, Ivo W. – Psychometrika, 1983
Goodness of fit tests for the Rasch model are typically large-sample, global measures. This paper offers suggestions for small-sample exploratory techniques for examining the fit of item data to the Rasch model. (Author/JKS)
Descriptors: Goodness of Fit, Hypothesis Testing, Item Analysis, Latent Trait Theory
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Molenaar, Ivo W. – Psychometrika, 1998
Explores the robustness of conclusions from a statistical model against variations in model choice with an illustration from G. Box and G. Tiao (1973). Suggests that simultaneous consideration of a class of models for the same data is sometimes superior to analyzing the data under one model and demonstrates advantages to Adaptive Bayesian…
Descriptors: Bayesian Statistics, Data Analysis, Models, Robustness (Statistics)
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Hamaker, Ellen L.; Dolan, Conor V.; Molenaar, Peter C. M. – Structural Equation Modeling, 2003
Demonstrated, through simulation, that stationary autoregressive moving average (ARMA) models may be fitted readily when T>N, using normal theory raw maximum likelihood structural equation modeling. Also provides some illustrations based on real data. (SLD)
Descriptors: Maximum Likelihood Statistics, Simulation, Structural Equation Models
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Molenaar, Ivo W.; Hoijtink, Herbert – Applied Measurement in Education, 1996
Some specific person-fit results for the Rasch model are presented, followed by an application to a test measuring knowledge of reasoning with logical quantors. Some issues are relevant to all attempts to use person-fit statistics in research, but the special role of the Rasch model is highlighted. (SLD)
Descriptors: Item Response Theory, Knowledge Level, Research Methodology, Responses
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Hoijtink, Herbert; Molenaar, Ivo W. – Psychometrika, 1992
The PARallELogram Analysis (PARELLA) model is a probabilistic parallelogram model that can be used for the measurement of latent attitudes or latent preferences. A method is presented for testing for differential item functioning (DIF) for the PARELLA model using the approach of D. Thissen and others (1988). (SLD)
Descriptors: Attitude Measures, Computer Simulation, Equations (Mathematics), Estimation (Mathematics)
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