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Peer reviewed
Direct linkKo, Yi-An; Song, Peter X. K.; Clark, Noreen M. – Health Education & Behavior, 2014
Rationale: Asthma is a variable condition with an apparent tendency for a natural decline in asthma symptoms and health care use occurring as children age. As a result, asthma interventions using a pre-post design may overestimate the intervention effect when no proper control group is available. Objectives: Investigate patterns of natural decline…
Descriptors: Diseases, Children, Age, Health Services
Taub, Gordon E.; McGrew, Kevin S.; Keith, Timothy Z. – Journal of Research in Childhood Education, 2015
This article examines the effect of improvements in timing/rhythmicity on mathematics achievement. A total of 86 participants attending 1st through 4th grades completed pre- and posttest measures of mathematics achievement from the Woodcock-Johnson III Tests of Achievement. Students in the experimental group participated in a 4-week intervention…
Descriptors: Elementary School Students, Elementary School Mathematics, Mathematics Achievement, Intervals
Dunst, Carl J.; Hamby, Deborah W. – Journal of Intellectual & Developmental Disability, 2012
This paper includes a nontechnical description of methods for calculating effect sizes in intellectual and developmental disability studies. Different hypothetical studies are used to illustrate how null hypothesis significance testing (NHST) and effect size findings can result in quite different outcomes and therefore conflicting results. Whereas…
Descriptors: Intervals, Developmental Disabilities, Statistical Significance, Effect Size
Rice, Mabel L.; Smolik, Filip; Perpich, Denise; Thompson, Travis; Rytting, Nathan; Blossom, Megan – Journal of Speech, Language, and Hearing Research, 2010
Purpose: The mean length of children's utterances is a valuable estimate of their early language acquisition. The available normative data lack documentation of language and nonverbal intelligence levels of the samples. This study reports age-referenced mean length of utterance (MLU) data from children with specific language impairment (SLI) and…
Descriptors: Control Groups, Intelligence, Intervals, Morphemes
Siegenthaler, Eliane; Munder, Thomas; Egger, Matthias – Journal of the American Academy of Child & Adolescent Psychiatry, 2012
Objective: Mental illness in parents affects the mental health of their children. A systematic review and a meta-analysis of the effectiveness of interventions to prevent mental disorders or psychological symptoms in the offspring were performed. Method: The Cochrane, MEDLINE, EMBASE, and PsycINFO databases were searched for randomized controlled…
Descriptors: Mental Disorders, Hyperactivity, Mental Health, Psychology
Dickson, Kirstin; Marshall, Marjorie; Boyle, James; McCartney, Elspeth; O'Hare, Anne; Forbes, John – International Journal of Language & Communication Disorders, 2009
Background: The study is the first within trial cost analysis of direct versus indirect and individual versus group modes of speech-and-language therapy for children with primary language impairment. Aims: To compare the short-run resource consequences of the four interventions alongside the effects achieved measured by standardized scores on a…
Descriptors: Control Groups, Intervention, Intervals, Phonology
Cabalo, Jessica Villaruz; Vu, Minh-Thien – Empirical Education Inc., 2007
The Maui Hawaii Educational consortium (the Maui School District and Maui Community College) sought scientifically based evidence for the effectiveness of the "Cognitive Tutor (CT) Algebra I Curriculum" to inform adoption decisions. Decision makers were particularly interested in whether the use of the "CT" program affects…
Descriptors: Access to Computers, Program Effectiveness, Algebra, Community Colleges
Peck, Heather L.; Kehle, Thomas J.; Bray, Melissa A.; Theodore, Lea A. – School Psychology Review, 2005
A multiple baseline design across three grade level groups with a comparison group was employed to investigate the effectiveness of yoga for improving time on task with 10 elementary school children who evidenced attention problems. A yoga videotape, published by Gaiam, was used that required the children to follow an adult instructor and three…
Descriptors: Elementary School Students, Intervention, Intervals, Academic Achievement
