Yeow Meng Thum

Yeow Meng Thum
NWEA · Research

PhD

About

40
Publications
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1,273
Citations

Publications

Publications (40)
Article
Full-text available
When conducting item reviews, analysts evaluate an array of statistical and graphical information to assess the fit of a field test (FT) item to an item response theory model. The process can be tedious, particularly when the number of human reviews (HR) to be completed is large. Furthermore, such a process leads to decisions that are susceptible t...
Article
Purpose The purpose of this paper is to provide an empirical comparison of two measures of school success – a value‐added assessment system and the federally‐mandated system of adequate yearly progress (AYP) – to identify highly effective urban schools in the USA and to explore the predictive relationship between evidence‐based decision‐making and...
Article
In this article, we will review several issues relating to the definition of "adequate yearly progress" (AYP), and its measurement, and offer some reasons why it may be prudent to separate the definition and measurement of AYP from its use in accountability. The design of accountability system includes general prescriptions about what data are rele...
Article
Full-text available
Este artículo se ocupa de los retos metodológicos de la rendición de cuentas de estudiantes, escuelas, distritos y estados, tal y como se formula en la nueva ley norteamericana, No Child Left Behind, y aporta algunas recomendaciones, basadas en investigaciones recientes, para una aproximación viable de la medida de progreso de las escuelas hacia un...
Article
Tobacco use, unhealthy diet, physical inactivity, and risky alcohol use are leading causes of preventable death. As there are many barriers that prevent primary care clinicians from effectively assisting patients with these behaviors, connecting patients with health behavior resources may reduce these unhealthy behaviors. A new adjunct role in prim...
Article
Full-text available
This study examined the relationship between creative teaching and elementary students' achievement gains. Forty-eight upper elementary school teachers' classroom instruction was observed and evaluated over the course of 8 different lessons throughout the year. For each teacher, during each lesson, both a creative teaching frequency score and a qua...
Article
As more and more educational agencies consider employing value-added analysis to anchor their accountability systems, recent research cautions that, with crucial information about schools and programs still unavailable, value-added analysis may not be able to deliver the more ambitious policy goals of isolating effects due to teaching or school pra...
Article
The Teacher Advancement Program (TAP) is a comprehensive school reform with the goal to attract, retain, and motivate quality teachers. By aggressively recruiting new teachers, providing a career continuum, introducing teacher-led professional development, implementing rigorous teacher accountability, and paying teachers based on their position, te...
Article
Full-text available
In a sample of 134 married couples randomly assigned to traditional or integrative behavioral couple therapy (TBCT vs. IBCT), a multivariate hierarchical growth curve analysis using latent variable regression revealed that measures of communication, behavior frequency, and emotional acceptance acted as mechanisms of change. TBCT led to greater chan...
Article
We are honored to have the opportunity to offer a few words in response to Molenaar's manifesto (this issue) calling for the return of the individual to scientific psychology. His arguments are clearly articulated, strongly supported, and quite timely, particularly given the recent surge in popularity of longitudinal studies of individual developme...
Article
This paper, based on naturalistic data, describes the acquisitional course and use of the articles a and the in young English-speaking children (18-61 months), with special emphasis on the role of individual variation. A growth modeling approach to the data reveals that children's individual acquisition schedules are similar in trend, but vary in t...
Article
The extensive research on teacher quality has led to two conclusions. First, there are large and significant differences among teachers in terms of their capacity to improve student achievement. Second, these differences are not captured by common measures of teacher qualifications (E.A. Hanushek, Teacher quality, in: L.T. Izumi, W.M. Evers (Eds.),...
Article
The extensive research on teacher quality has led to two conclusions. First, there are large and significant differences among teachers in terms of their capacity to improve student achievement. Second, these differences are not captured by common measures of teacher qualifications (E.A. Hanushek, Teacher quality, in: L.T. Izumi, W.M. Evers (Eds.),...
Article
This paper considers the issues raised in using standardized achievement test scores for purposes of examining the academic productivity of schools. We critique some commonly used practices by urban school districts and suggest an alternative approach -- the school productivity profile. This profile is based on an assessment of each school's contri...
Article
Studying change in student achievement is of central importance in numerous areas of educational research, including efforts to monitor school performance, investigations of the effects of educational interventions over time, and school effects studies focusing on how differences in school policies and practices relate to differences in student pro...
Article
This paper details a straightforward procedure for MCMC estimation in sizable samples. Results from a simple example in a school accountability context will be used to illustrate the issue
Article
This paper develops a procedure for measuring how much is gained, and at what precision, by students in a pre-test and post-test situation against a target score on the post-test. We define our productivity index, M j , for teacher j as the ratio of estimated gains to an estimated standard that is the distance between an estimate of the pre-test sc...
Article
This paper dwells on the methodological challenges for student, school, district, and state accountability as formulated by the new law and provides some recommendations, based on recent research, for a viable approach for measuring progress of schools toward a set target. Conceived as a planning document, this paper aims to provide an analytic pla...
Article
This paper focuses on interpreting the major conceptual features of California's Academic Performance Index (API) as a coherent set of statistical procedures. To facilitate a characterization of its statistical properties, we first cast the index as a simple weighted average of the subjective worth of students' normative performance and present its...
Article
Attending to school mean rates of change and to differences in rates of change for various demographic groups is of central importance in monitoring school performance.
Article
In intervention studies, it is important to assess whether one program might be more effective for individuals with extreme initial difficulties, while another might be more effective for individuals with less extreme initial difficulties. In settings where we obtain time-series data for each person, this entails examining interactions between trea...
Article
This report uses ITBS scores for all students in grades two through eight from 1987 to 1996. In half of the schools, where local school councils had the opportunity to choose their own principal in 1990, these data represent six-year trends in student learning under reform. For the other half of schools, who had the opportunity to select a principa...
Article
A substantial literature on switches in linear regression functions considers situations in which the regression function is discontinuous at an unknown value of the regressor, Xk, where k is the so-called unknown "change point." The regression model is thus a two-phase composite of yi ∼ N(β01 + β11Xi, σ12), i = 1, 2, . . . , k and yi ∼ N(β02 + β12...
Article
A substantiallite# ature on switche# inline# r r e# re ssion functions conside# s situations in which the re gre#;:L n function is discontinuous at an unknown value of the re gre#LM r, X k isthe so-calle# unknown "change point".The r e# re ssion mo is thus a two-phase composite 1 ),i 1, 2,. ,k and y i 2 ),i k +1,k+2,. ,n. Solutions to this single s...
Article
Full-text available
In this article, we develop a class of two-stage models to accommodate three common characteristics of behavioral data. First, behavior is invariably multivariate in its conceptualization and communication. Separate univariate analyses of related outcome variables are fraught with potential interpretive blind spots for the researcher. This practice...
Article
This paper considers the issues raised in using standardized achievement test scores for purposes of examining the academic productivity of schools. We critique some commonly used practices by urban school districts and suggest an alternative approach – the school productivity profile. This profile is based on an assessment of each school's contrib...
Article
Full-text available
Thesis (Ph. D.)--University of Chicago, 1994. Includes bibliographical references (p. 116-126). Photocopy.
Article
A hierurchical lineur model analysis (Raz~denbz~sh & Bryk, 1986) is used to inve.~tigate directly the efects of structz~rul and normative features of schools on both the probuhility of dropping out und the strongest behuvioral predictor of dropping out, uhsenteeism. We hypothesized (hut high levels of internal difirentiat ion ~vithin high schools a...
Article
Full-text available
This paper examines the effects of school characteristics on both the probability of dropping out and the strongest predictor of dropping out - absenteeism. The authors employ a sub-sample from the High School and Beyond database which contains results of background questionnaires and standardized achievement tests given in 1980 to approximately 30...
Article
A new approach, derived from a multilevel latent variable framework for aggregating over repeated draws from a single population, is proposed for synthesizing the outputs from the resulting set of multiple regressions. This methodology is particularly suited to model-driven meta-analyses, in which each included primary study provides information pe...
Article
This paper details a straightforwardprocedure for MCMC estimation in sizable samples. Results from a simple example in aschool accountability context will be used to illustrate the issue

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