High-quality measurement tools are critical to school improvement efforts. Education researchers frequently employ surveys in order to assess a host of variables associated with school improvement. This article asserts that Rasch modeling techniques enhance the quality of a measurement tool because they comprise elements of both qualitative and…

Lack of validated research tools in Spanish-speaking countries has limited the extent to which educational research can expand. In recent years, there has been a growing interest in the exploration of affective factors in reading. The need for research on reading and reading motivation in Latin American countries calls for valid, reliable tools to…

This study aims to develop a short German version of the Self Description Questionnaire (SDQ I-GS) in order to present a robust economical instrument for measuring German preadolescents' multidimensional self-concept. A full German version of the SDQ I (SDQ I-G) that maintained the original structure and thus length of the English original SDQ I…