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Casabianca, Jodi M.; Lewis, Charles – Journal of Educational and Behavioral Statistics, 2015
Loglinear smoothing (LLS) estimates the latent trait distribution while making fewer assumptions about its form and maintaining parsimony, thus leading to more precise item response theory (IRT) item parameter estimates than standard marginal maximum likelihood (MML). This article provides the expectation-maximization algorithm for MML estimation…
Descriptors: Item Response Theory, Maximum Likelihood Statistics, Computation, Comparative Analysis
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Ning, Bo; Van Damme, Jan; Van Den Noortgate, Wim; Gielen, Sarah; Bellens, Kim; Dupriez, Vincent; Dumay, Xavier – School Effectiveness and School Improvement, 2016
In the 2009 Programme for International Student Assessment, the Flemish community of Belgium outscored its French community in reading, with low achievers accounting for a large proportion of the score gaps. In this study, between-community comparisons based on the Blinder-Oaxaca decomposition method showed that the Flemish community benefits…
Descriptors: Reading Instruction, Reading Strategies, Reading Skills, Foreign Countries
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Micklewright, John; Schnepf, Sylke V.; Silva, Pedro N. – Economics of Education Review, 2012
Investigation of peer effects on achievement with sample survey data on schools may mean that only a random sample of the population of peers is observed for each individual. This generates measurement error in peer variables similar in form to the textbook case of errors-in-variables, resulting in the estimated peer group effects in an OLS…
Descriptors: Foreign Countries, Sampling, Error of Measurement, Peer Groups