NotesFAQContact Us
Collection
Advanced
Search Tips
Source
Publication Type
Information Analyses1
Speeches/Meeting Papers1
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Showing one result Save | Export
Qian, Gaoyin – 1993
Some methodological issues in the study of levels of knowledge are reviewed, and needs for further research are explored, drawing on an analysis of 12 studies reported since the late 1970s. In the 12 studies, 16 quantitative experiments were conducted. These were assessed for internal and external validity. Analysis revealed some shortcomings in…
Descriptors: Age Differences, Data Collection, Educational Research, Effect Size