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Pereira, Mary Delfin; Vallance, Roger – Issues in Educational Research, 2006
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…
Descriptors: Action Research, Foreign Countries, Case Studies, Reading Comprehension
Dempster, Harriet L.; Roberts, Jacquie – Child Abuse and Neglect: The International Journal, 1991
An evaluation of one therapeutic service offered to sexually abused children in the United Kingdom exposed the methodological issue of false negatives among the comparison group, suggesting that researchers cannot assume that nonreferred comparison subjects have not actually experienced sexual abuse. (DB)
Descriptors: Child Abuse, Control Groups, Foreign Countries, Intervention

Adey, Philip – Research in Science Education, 1995
Presented a categorization of types of science education research, their possible contributions to cognitive science, and the potential of results from cognitive science for enriching the science education research accounts. Explored the relationship of an example of cognitive work to cognitive science. (15 references) (Author/JRH)
Descriptors: Classification, Cognitive Development, Control Groups, Experimental Groups

Diaper, Gordon – Educational Studies, 1990
Reexamines definitions of and explanations for the Hawthorne Effect in research subjects. Notes that the Hawthorne Effect was tested in a study of the effectiveness of paired classroom reading among students. Challenges the notion that subject's behavior is modified by participation in research. Reviews various research studies that question the…
Descriptors: Classroom Research, Control Groups, Educational Research, Experimental Groups