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Hoyer, Chad E.; Kegerreis, Jeb S. – Journal of Chemical Education, 2013
The essentials of Monte Carlo integration are presented for use in an upper-level physical chemistry setting. A Mathcad document that aids in the dissemination and utilization of this information is described and is available in the Supporting Information. A brief outline of Monte Carlo integration is given, along with ideas and pedagogy for…
Descriptors: Monte Carlo Methods, Chemistry, Physics, Computer Assisted Design
Jin, Ying; Myers, Nicholas D.; Ahn, Soyeon; Penfield, Randall D. – Educational and Psychological Measurement, 2013
The Rasch model, a member of a larger group of models within item response theory, is widely used in empirical studies. Detection of uniform differential item functioning (DIF) within the Rasch model typically employs null hypothesis testing with a concomitant consideration of effect size (e.g., signed area [SA]). Parametric equivalence between…
Descriptors: Test Bias, Effect Size, Item Response Theory, Comparative Analysis
Tian, Wei; Cai, Li; Thissen, David; Xin, Tao – Educational and Psychological Measurement, 2013
In item response theory (IRT) modeling, the item parameter error covariance matrix plays a critical role in statistical inference procedures. When item parameters are estimated using the EM algorithm, the parameter error covariance matrix is not an automatic by-product of item calibration. Cai proposed the use of Supplemented EM algorithm for…
Descriptors: Item Response Theory, Computation, Matrices, Statistical Inference
Sun, Shuyan; Pan, Wei – Journal of Experimental Education, 2013
Regression discontinuity design is an alternative to randomized experiments to make causal inference when random assignment is not possible. This article first presents the formal identification and estimation of regression discontinuity treatment effects in the framework of Rubin's causal model, followed by a thorough literature review of…
Descriptors: Regression (Statistics), Computation, Accuracy, Causal Models
Gunzenhauser, Catherine; von Suchodoletz, Antje – Early Education and Development, 2015
Research Findings: Behavioral self-regulation is crucial for school success. Although behavioral self-regulation typically grows rapidly during the preschool period, children in this age group vary widely in their behavioral self-regulation capacities. The present study investigated 3 potential determinants of growth rates in behavioral…
Descriptors: Self Control, Foreign Countries, Child Behavior, Family Influence
Culpepper, Steven Andrew; Aguinis, Herman – Psychological Methods, 2011
Analysis of covariance (ANCOVA) is used widely in psychological research implementing nonexperimental designs. However, when covariates are fallible (i.e., measured with error), which is the norm, researchers must choose from among 3 inadequate courses of action: (a) know that the assumption that covariates are perfectly reliable is violated but…
Descriptors: Statistical Analysis, Error of Measurement, Monte Carlo Methods, Structural Equation Models
Skidmore, Susan Troncoso; Thompson, Bruce – Journal of Experimental Education, 2011
In the present Monte Carlo simulation study, the authors compared bias and precision of 7 sampling error corrections to the Pearson r[superscript 2] under 6 x 3 x 6 conditions (i.e., population ρ values of 0.0, 0.1, 0.3, 0.5, 0.7, and 0.9, respectively; population shapes normal, skewness = kurtosis = 1, and skewness = -1.5 with kurtosis =…
Descriptors: Monte Carlo Methods, Sampling, Error Correction, Statistical Bias
Lu, Yin; Miniatura, Christian; Englert, Berthold-Georg – European Journal of Physics, 2010
The transmission through a stack of identical slabs that are separated by gaps with random widths is usually treated by calculating the average of the logarithm of the transmission probability. We show how to calculate the average of the transmission probability itself with the aid of a recurrence relation and derive analytical upper and lower…
Descriptors: Probability, Monte Carlo Methods, Computation, Numbers
Burke, John C. – ProQuest LLC, 2012
The objective of my dissertation is to create a general approach to evaluating IS/IT projects using Real Option Analysis (ROA). This is an important problem because an IT Project Portfolio (ITPP) can represent hundreds of projects, millions of dollars of investment and hundreds of thousands of employee hours. Therefore, any advance in the…
Descriptors: Information Technology, Program Evaluation, Evaluation Methods, Portfolio Assessment
Kyllingsbaek, Soren; Markussen, Bo; Bundesen, Claus – Journal of Experimental Psychology: Human Perception and Performance, 2012
The authors propose and test a simple model of the time course of visual identification of briefly presented, mutually confusable single stimuli in pure accuracy tasks. The model implies that during stimulus analysis, tentative categorizations that stimulus i belongs to category j are made at a constant Poisson rate, v(i, j). The analysis is…
Descriptors: Visual Discrimination, Visual Stimuli, Accuracy, Classification
Padilla, Miguel A.; Divers, Jasmin; Newton, Matthew – Applied Psychological Measurement, 2012
Three different bootstrap methods for estimating confidence intervals (CIs) for coefficient alpha were investigated. In addition, the bootstrap methods were compared with the most promising coefficient alpha CI estimation methods reported in the literature. The CI methods were assessed through a Monte Carlo simulation utilizing conditions…
Descriptors: Intervals, Monte Carlo Methods, Computation, Sampling
Fong, Duncan K. H.; Ebbes, Peter; DeSarbo, Wayne S. – Psychometrika, 2012
Multiple regression is frequently used across the various social sciences to analyze cross-sectional data. However, it can often times be challenging to justify the assumption of common regression coefficients across all respondents. This manuscript presents a heterogeneous Bayesian regression model that enables the estimation of…
Descriptors: Monte Carlo Methods, Social Sciences, Computation, Models
Tay, Louis; Drasgow, Fritz – Educational and Psychological Measurement, 2012
Two Monte Carlo simulation studies investigated the effectiveness of the mean adjusted X[superscript 2]/df statistic proposed by Drasgow and colleagues and, because of problems with the method, a new approach for assessing the goodness of fit of an item response theory model was developed. It has been previously recommended that mean adjusted…
Descriptors: Test Length, Monte Carlo Methods, Goodness of Fit, Item Response Theory
Sosnowski, Stanislaw – Journal of Chemical Education, 2013
Free software for the demonstration of the features of homo- and copolymerization processes (free radical, controlled radical, and living) is described. The software is based on the Monte Carlo algorithms and offers insight into the kinetics, molecular weight distribution, and microstructure of the macromolecules formed in those processes. It also…
Descriptors: Computer Software, Computer Uses in Education, Educational Technology, Science Instruction
Sweet, Tracy M.; Thomas, Andrew C.; Junker, Brian W. – Journal of Educational and Behavioral Statistics, 2013
Intervention studies in school systems are sometimes aimed not at changing curriculum or classroom technique, but rather at changing the way that teachers, teaching coaches, and administrators in schools work with one another--in short, changing the professional social networks of educators. Current methods of social network analysis are…
Descriptors: Educational Research, Models, Social Networks, Network Analysis