Discusses how clinicians and researchers can critically evaluate information from efficacy studies of language intervention programs. It argues for combining both experimental and nonexperimental approaches and suggests that the use of matching in nonrandomized studies allows for comparison of groups of children participating in an intervention…

A curriculum initiative project was implemented in four schools in Singapore over a span of five to six weeks during 2004. The project employed a number of different schools: girls only, boys only and co-educational schools; different levels of performance in a graded situation; multiple teachers and classes within each site; and control and…

Ninety-two research reports involving specifically language-impaired subjects were reviewed. Analysis showed few consistent trends with respect to subject selection, subject description, and the number and types of control groups. The importance of more complete subject descriptions and matching criteria for control groups is discussed.…

The Penn Manor CRT/Curriculum Articulation Project was designed to study the impact of the implementation of four specific interventions on the achievement of elementary school students in mathematics and language arts. The interventions were as follows: (1) classroom teachers were given individual curriculum skill objectives for their grade…