The primary purpose of the present study was to investigate the appropriateness of several tests of significance for use with interrupted time series data. The second purpose was to determine what effect the violation of the assumption of uncorrelated error would have on the three tests of significance. The three tests were the Mood test,…

Modeling the process by which participants are selected into groups, rather than adjusting for preexisting group differences, provides the basis for several new approaches to the analysis of data from nonrandomized studies. Econometric approaches, the propensity scores approach, and the relative assignment variable approach to the modeling of…

Selectivity problems are discussed in terms of a general model that is estimated by the maximum likelihood method. Both single-group and multiple-group analyses are considered. An extension of the general model to latent variable models is discussed. (Author/PN)

The effect size was calculated for 104 dependent variables studied in 23 experimental or quasi-experimental evaluations of patient education programs. The mean effect size for all 23 studies indicated that the average taught patient moved from the 50th to the 77th percentile, relative to the control group. (GDC)

According to two small experimental studies of flexible working hours, federal workers with young children choose to arrive at and depart from work earlier, allowing them to increase the time spent with their families and to engage in recreational, educational, and household activities. (Author/SK)

Selection bias can be the most important threat to internal validity in intervention research, but is often insufficiently recognized and controlled. The bias is illustrated in research on parental interventions (punishment, homework assistance); medical interventions (hospitalization); and psychological interventions for suicide risk, sex…

In efforts aimed at acquainting learners with "how to learn" skills rather than static content knowledge, more student centric instructional approaches are being increasingly adopted in informing curriculum design and delivery. Technology-rich problem solving environments offer great promise in scaffolding and facilitating…

The enhancement of critical thinking skills is necessary for students pursuing degrees in science, technology, engineering, and mathematics (STEM) disciplines. A three-year mixed methods study conducted at a Historically Black College and University in Baltimore, Maryland focused on enhancing critical thinking skills for African American students.…

The present study examined the outcomes of a newly designed four-lesson science module on opinion-forming in the context of genomics in upper secondary education. The lesson plan aims to foster 16-year-old students' opinion-forming skills in the context of genomics and to test the effect of the use of fiction in the module. The basic hypothesis…

The Seventh School Curriculum Reform in Korea was introduced in 2000 to prepare school-aged Koreans for an information and knowledge-based society. The reform effort emphasises information and communication technology (ICT) in the K-12 curriculum and a learner-centred pedagogy. This study examines the contributions of ICT, specifically,…

This paper proposes a multimedia English learning (MEL) system, based on Hidden Markov Models (HMMs) and mastery theory strategy, for teaching students with the aim of enhancing their English phonetic awareness and pronunciation. It can analyze phonetic structures, identify and capture pronunciation errors to provide students with targeted advice…

This study represents a systematic replication of a previous intervention which took place in schools in Mangere from 2003 to 2005. (McNaughton, MacDonald, Maituanai-Toloa, Lai, & Farry, 2006). The contexts and theoretical rationale are the same for the present study as those for the original Mangere study. The authors have repeated that…

Introduction: There is no doubt, Social Studies as a course of discipline that gained its entrance in Nigeria School Curriculum shortly after its independence, precisely, 1963 is at its infancy. A discipline of such nature that came when there was eagerness for a course of study that could assist in understanding and finding solutions to the…

This systematic review of the literature synthesizes research from a number of disciplines and provides a succinct distillation of the methods and measures used to study the impact of creative drama on the language development of young children. An analysis of the merits and limitations of the reviewed studies reveals a number of methodological…

The 4Rs Program (Reading, Writing, Respect and Resolution) is a "dual focus" whole school universal intervention designed to promote literacy development and social-emotional learning, that is currently being rigorously evaluated using a school-randomized trial of 18 elementary schools (9 intervention, 9 control) in New York City. The…