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Chereni, S.; Sliuzas, R. V.; Flacke, J. – International Journal of Social Research Methodology, 2020
Mixed methods surveys using multilingual assistants in areas without clear pre-defined sampling units are often difficult to manage and unpredictable, thereby threatening data quality. More so when such surveys are executed in unfamiliar territories where cultural and language barriers prevent direct communication between the principal researcher…
Descriptors: Multilingualism, Mixed Methods Research, Sampling, Data Analysis
Martin, Michael O., Ed.; Kelly, Dana L., Ed. – 1996
The Third International Mathematics and Science Study (TIMSS) developed and administered tests and questionnaires in three student populations to document the quality of mathematics and science education in 45 participating countries. Study design, instrument development, and research procedures were achieved through a complex collaborative…
Descriptors: Academic Achievement, Comparative Analysis, Data Collection, Elementary Secondary Education