We contribute to debate about causal inferences in educational research in two ways. First, we quantify how much bias there must be in an estimate to invalidate an inference. Second, we utilize Rubin's causal model to interpret the bias necessary to invalidate an inference in terms of sample replacement. We apply our analysis to an inference…

This paper delineates general validity and research questions that are underlying an ongoing program of research pertaining to the Early Development Instrument (EDI, Janus and Offord 2007), a population-level measure, on which teachers rate kindergarten children's developmental outcomes in the social, emotional, physical, cognitive, and…

This issue brief focuses on one particular report, released in September 2009, that has been widely cited by charter school advocates because it appears to show remarkable results. In the report, "How New York City's Charter Schools Affect Achievement," Stanford University professor Caroline Hoxby and her colleagues Sonali Murarka and…

This note suggests delta method implementations for deriving confidence intervals for a latent mean effect size measure for the case of 2 independent populations. A hypothetical kindergarten reading example using these implementations is provided, as is supporting LISREL syntax. (Contains 1 table.)

This article presents an overview of quantitative methodologies for the study of stage-sequential development based on extensions of Markov chain modeling. Four methods are presented that exemplify the flexibility of this approach: the manifest Markov model, the latent Markov model, latent transition analysis, and the mixture latent Markov model.…

This report uses administrative data provided by the Los Angeles Unified School District (LAUSD) on kindergarten to third-grade students. The records begin with kindergartners in 2001, first-graders in 2002, second-graders in 2003, and third-graders in 2004 and include all LAUSD students in grades K-3 for 2004 to 2008. Altogether, the raw data…

This manual provides guidance and documentation for users of the eighth-grade data of the Early Childhood Longitudinal Study, Kindergarten Class of 1998-99 (ECLS-K). It begins with an overview of the ECLS-K study. Subsequent chapters provide details on the instruments and measures used, the sample design, weighting procedures, response rates, data…

This issue highlights seven distinct studies. The first helps us understand how children use language in a computer-supported learning environment. The second investigates the longitudinal outcomes associated with the provision of bilingual education. The third is a case study that examines young boys' beliefs about second language acquisition.…

This article investigates the ways in which alphabetic print concepts govern a sense of natural and appropriate early reading development, and juxtaposes the concepts found in early literacy curriculum and assessment with hypertextual elements found in new forms of texts written for children. Using a theoretical approach that combines…

The No Child Left Behind Act's requirements for scientifically based research and new accountability standards will affect how professional development leaders do their work. Meeting the new requirements means leaders must more carefully evaluate new programs of professional learning and assess the results. Evaluation must become a given, not an…

There is currently a great deal of controversy about a critical issue in educational research: What constitutes valid evidence for determining whether educational innovations are effective? One side of the controversy is reflected in the U.S. Department of Education's current policies and funding programs. This side emphasizes methodological…

The U.S. Department of Education sponsored a summit that addressed the need for scientifically-based evidence on the use of technology in teaching and learning. One hundred leaders from the Preparing Tomorrow's Teachers to Use Technology (PT[3]) federal initiative were invited to participate in the meeting, held in Fall 2003. The recommendations…