concepts that are inferred from commonalities among observed phenomena
a statistic that represents the magnitude of the difference between the average scores of two groups on a measure or the magnitude of the relationship between the distribution of scores on two measures for a sample.
Educational Resources Information Center
a federally funded agency that maintains a search engine and database of bibliographic citations for education-related documents.
exploratory case study method
a method for synthesizing the findings of case studies, in addition to relevant quantitative studies and nonresearch accounts, so as to identify both the unique characteristics of each case and their commonalities.
in research, a synthesis of what is known about a particular topic or problem, based on a systematic search for relevant publications, using standard search procedures and criteria for judging the soundness of research evidence.
a method of combining the statistical results from different quantitative research studies on the same phenomenon into a single statistic called an effect size.
in general research, a publication written by the individuals who actually conducted the investigation presented in the publication;
in historical research, any source of information from witnesses or participants that has been preserved from the past.
in literature reviews, a publication in which the author reviews research or other work that carried out by someone other than an author;
in historical research, a document or other communication in which an author who was not a direct witness describes an event.