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Kingir, Sevgi; Geban, Omer; Gunel, Murat – Research in Science Education, 2013
This study investigated the effect of the Science Writing Heuristic (SWH) approach on grade 9 students' understanding of chemical change and mixture concepts. Four intact classes taught by two chemistry teachers from a Turkish public high school were selected for the study; one class was assigned as the treatment group, and the other class was…
Descriptors: Science Instruction, Writing (Composition), Heuristics, Statistical Analysis
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McEntee-Atalianis, Lisa J. – Journal of Multilingual and Multicultural Development, 2011
The concept of "Ethnolinguistic Vitality" (EV) has received variable acceptance and support since its introduction by Giles, Bourhis, and Taylor. It has especially proven to be a valuable heuristic in studies of language maintenance and shift. However, the reliability and validity of the instruments used to investigate EV, especially…
Descriptors: Language Maintenance, Heuristics, Reliability, Validity