Critical thinking skills are the 21st-century life skills that are needed by students. However, in elementary schools, there are no instruments that are truly effective and efficient to measure critical thinking skills. This research aims to develop an open-ended question assessment instrument to measure students' critical-thinking skills, to test…

Many researchers have investigated the effects of students' prior knowledge upon learning chemistry, for example, the tenacity of alternative conceptions. Knowledge about learning also shapes students' learning of chemistry. This research describes the development of CHEMX, a survey instrument that measures an aspect of knowledge about learning…

The assessment of the development of preschool and primary grade children has assumed greater importance in recent years with the emphasis on compensatory education programs. While the assessment of cognitive development has received the primary thrust of research efforts thus far, most child experts would agree that the child's affective…