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Direct linkIbiagbani M. Max-Harry; Grace P. Counts; Craig S. Nunemaker; Nicholas B. Whitticar – Journal of Chemical Education, 2023
Enzyme-linked immunosorbent assay (ELISA) is a valuable tool in various chemical and biological fields for investigating the presence and quantity of proteins of interest in given samples. The high importance of the assay makes it widely used in biological research and hence a crucial skill to master for up-and-coming scientists. A major…
Descriptors: Evaluation Methods, Chemistry, Biology, Skill Development
Morell, Linda; Tan, Rachael Jin Bee – Journal of Mixed Methods Research, 2009
Researchers in the areas of psychology and education strive to understand the intersections among validity, educational measurement, and cognitive theory. Guided by a mixed model conceptual framework, this study investigates how respondents' opinions inform the validation argument. Validity evidence for a science assessment was collected through…
Descriptors: Validity, Educational Psychology, Measurement, Epistemology
Download full textMartin, Michael O., Ed.; Mullis, Ina V.S., Ed.; Chrostowski, Steven J., Ed. – International Association for the Evaluation of Educational Achievement, 2004
This volume describes the technical aspects of TIMSS 2003 and summarizes the main activities involved in the development of the data collection instruments, the data collection itself, and the analysis and reporting of the data. The thirteen chapters contained herein are: (1) Overview of TIMSS 2003 (Michael O. Martin and Ina V. S. Mullis); (2)…
Descriptors: Sampling, Quality Control, Science Tests, Grade 4
