Discusses problems of internal and external validity in research in educational computing. Highlights include three stages of modern research in educational computing, the need to describe control groups and instructional methodologies, and the need for a balance between theory and practice. (LRW)

A QuickBASIC program is described that can be used to conduct Dunnett-like comparisons on a set of independent proportions. The statistical method used, based on Levy's statistical method (1975), is an extension of the well-known Dunnett test for multiple comparisons on means. (Author/SLD)

This paper reviews limitations in the interpretations of group differences in studies that use younger, language-matched controls in addition to age-matched controls to examine the role of "language level" on performance. Problems arise because of the multidimensional nature of language, extraneous age effects associated with language matching,…

Eight variations of a general matching design, matching program participants and a control group, were studied through simulation, for their effectiveness in evaluating programs for the gifted and talented. A regression-discontinuity design provided the best approach, with unbiased estimates of program effects. (SLD)

This study compared Hispanic children (ages 7 to 11) with combined type (CT, n = 33) and inattentive type (IT, n = 21) attention deficit hyperactivity disorder (ADHD) and a control group (n = 25) on time-estimation and time-reproduction tasks. The ADHD groups showed larger errors in time reproduction but not in time estimation than the control…

Leisure items (e.g., games, toys) are commonly made available as controls during attention conditions of functional analyses (Ringdahl, Winborn, Andelman, & Kitsukawa, 2002). However, Ringdahl et al. raised questions about this practice. This paper reviews research that supports and conflicts with the inclusion of leisure items as controls,…

Background: Children with speech difficulties may have associated educational problems. This paper reports a study examining the educational attainment of children at Key Stage 1 of the National Curriculum who had previously been identified with a speech difficulty. Aims: (1) To examine the educational attainment at Key Stage 1 of children…

Despite its widespread use in evaluation data analysis, statistical testing has come under persistent criticism resulting in calls for its rethinking, and even possible elimination (Carver, 1978, 1993). Saxon and Boylan issue a call "to strengthen developmental education research and to make it more accessible" (2003, p. 2). Among the types of…

The key research question in this small-scale study focuses on the effects that an ICT (information and communications technologies)-based concept mapping intervention has on creativity and writing achievement in 10-11-year-old primary age pupils. The data shows that pupils using a concept mapping intervention significantly improve their NFER…

The transition of people with intellectual disability (ID) from care institutions to the community according to Western policy results in a shift of responsibility towards primary health care services. In order to provide optimal care to people with ID living in the community, general practitioners need to be aware of the specific health problems…

This article examines the use of "mixed methods" research in education--studies that blend different research strategies. Although various methodologies have always been part of a researcher's toolkit, much of the renewed attention to that strategy is a reaction to the U.S. Department of Education's current emphasis on using randomized field…

This study examined the influence of challenge-based recreation on the collective efficacy of families with at-risk adolescents. Thirty-four families participated in one of three experimental groups and a control group. Collective family recreation efficacy and conflict resolution efficacy increased for families in all three recreation contexts.…

Backround: The ability to repair communicative breakdown is an important pragmatic language skill, yet very little is known about it in the population of children with autism spectrum disorder (ASD). Previous investigations have shown that people with ASD, across a variety of ages and language levels, recognized communicative breakdown and…

Background: Symptoms of prosodic problems have been found in Swedish children with language impairment at word and phrase level and possibly also at discourse level. Aims: The aim was twofold. First, to characterize a group of children with prosodic problems compared with children with normal language development. Second, to investigate the…

The purpose of this study was to find new evidence for phonological coding in written word recognition among deaf Dutch children. A lexical decision task was presented to 48 severely and profoundly deaf children aged from 6 years 8 months to 13 years 5 months, and a control group of Grade 1 hearing children matched on written word recognition.…