This paper provides practical guidance for researchers who are designing studies that randomize groups to measure the impacts of interventions on children. To do so, the paper: (1) provides new empirical information about the values of parameters that influence the precision of impact estimates (intra-class correlations and R-squares); (2)…

The purpose of this study was to examine the correlation between online survey non-response and various demographic factors, including gender. Studies have shown that trends exist with regard to who responds to surveys, at least with regard to traditional modes of survey administration. Reports suggest that many demographic and other correlates…

Although there is evidence of parental participation in school governance in South Africa, the question of how these parents manage their participation in these affairs is largely unanswered. This question represents one of the major exclusions in the existing reflections on the school governance debate in the country. Using a qualitative…

Three years of graduating business honors cohorts in a large urban university were sampled to determine whether the introduction of ubiquitous laptop computers into the honors program contributed to student achievement, student satisfaction and constructivist teaching activities. The first year cohort consisted of honors students who did not have…

Arrack is produced from palm and date juice which is commonly consumed by the lower class of all religious communities in rural Bangladesh. Previous studies could not cross-culturally investigate arrack drinking patterns. The present study examined and compared arrack drinking patterns among the Muslim, Hindu, Santal, and Oraon communities'…

Student performance in basic math and reading skills in the United States trails behind other developed countries, providing the rationale for more research to determine how performance might be improved. Following evidence to conclude that multilingualism enhances cognitive, neuro-linguistic and meta-linguistic development, it is proposed that…

This is the first of two reports that summarize the findings from an impact evaluation of a violence prevention intervention for middle schools. This report discusses findings after 1 year of implementation. A forthcoming report will discuss the findings after 2 years and 3 years of implementation. In 2004, the U.S. Department of Education (ED)…

This paper examines several ways in which teaching effectiveness and student learning in an undergraduate Business Statistics course can be enhanced. First, we review some key concepts in Business Statistics that are often challenging to teach and show how using real data sets assist students in developing deeper understanding of the concepts.…

This technical paper examines the issue of attrition bias in two cohorts of the Longitudinal Surveys of Australian Youth (LSAY), based on an analysis using data from 1995 to 2002. Data up to 2002 provided eight years of information on members of the Y95 cohort and five years of information on members of the Y98 cohort. This study suggests that…

This quantitative study analyzed data to find a valid and reliable assessment for progress monitoring also having predictive power of a student's future reading performance on a state-mandated standardized reading achievement evaluation. The Response to Intervention (RTI) model was implemented in the language arts classrooms of a rural middle…

Twenty Monte Carlo studies on multiple comparison (MC) techniques were conducted to examine which MC technique was the "method of choice." The results from these studies had several apparent contradictions when different techniques were investigated under varying sample size and variance conditions. Box's coefficient of variance…

Grouping is a statistical procedure through which members of the same group are considered as a single unit of observation. There are various ways to assign group membership and various ways to assign values of variables to groups. There are methodological problems associated with grouping in general and with particular methods of grouping. This…