Learning frequently takes place in groups of individuals who study or work together for a certain period of time. Although there is variation in the extent to which individuals learn within a group, individuals within the same group tend to be more similar in terms of learning than individuals from different groups. Further, repeated measurements taken from the same individuals are likely to be correlated. The focus of this workshop is on implications of these characteristics for sampling, measurement, and data analysis in educational research.
Basic understanding of the following topics is necessary and sufficient for workshop attendance: (1) sampling procedures (e.g., simple random sample); (2) experimental procedures (e.g., randomized experiments, quasi-experiments, between-subjects, repeated measures); and (3) reliability (e.g., internal consistency, test-retest reliability) and validity (e.g., internal validity, external validity, construct validity). These topics are covered by many methodology textbooks, for example: Creswell, J. W. (2009). Research Design: Qualitative, Quantitative, and Mixed Methods Approaches [Chapter on “Quantitative Methods”, which is Chapter 9 in 2nd edition or Chapter 8 in 3rd edition].