Effective collaboration depends on the mutual regulation of group members, positioning it as a fundamental aspect of socially shared regulation of learning (SSRL). In recent years, SSRL has garnered increasing research attention. However, there remains a scarcity of psychometrically sound measures for assessing this construct. Without reliable…

School leadership research literature has a large number of widely used constructs. Could fewer constructs bring more clarity? This study evaluates construct content validity, defined as the extent to which a measure's items reflect a theoretical content domain, in school leadership literature. To do so, we reviewed 29 articles that used Teaching…

The teaching of English as a foreign language in Indonesia has a long history, and it is always important to ask whether the assessment of the students' language skills has been valid and reliable. A screening of many articles in several prominent databases reveal that a number of evaluation studies have been done by Indonesian scholars in the…