Researchers are often interested in establishing equivalence of population variances. Traditional difference-based procedures are appropriate to answer questions about differences in some statistic (e.g., variances, etc.). However, if a researcher is interested in evaluating the equivalence of population variances, it is more appropriate to use a…

Including all children in large-scale educational studies is a pressing concern. Omitting certain types of children from studies can lead to skewed findings that promote inaccuracies about learning levels or educational quality. Increasingly, assessments are a method for investigating the quality of education systems, but national assessments are…

Threshold concepts were introduced nearly 10 years ago by Ray Land and Jan Meyer. This work has spawned four international conferences and hundreds of papers. Although the idea has clearly gained traction in higher education, this sub-field does not yet have a fully fledged research methodology or a strong critical discourse about methodology.…

Many see trust as an important social resource for the welfare of individuals as well as nations. It is therefore important to be able to identify trust and explain its sources. Cross-country survey analysis has been an important tool in this respect, and often one single variable is used to identify social trust understood as trust in strangers,…

Analyzes the concept of comparison as a methodological problem in cross-cultural studies and comparative education. Outlines five types of relationships that rely on equivalence or comparability. Discusses the questions of whether the concepts under comparison correspond, how to measure correspondence, and how to resolve linguistic difficulties.…

Differences in 164 fifth grade students' reading comprehension scores were obtained with four different tasks typically used to measure comprehension (multiple choice, recall, cloze, and maze), using four different reading passages that were equated according to readability formulas. Data analyses revealed significant effects for passage, task,…