As people attempt to make sense of the world, they develop personal knowledge structures. These structures often contain misconceptions--inaccurate or incomplete information--that are highly resistant to change because existing knowledge networks must be restructured to accommodate counterintuitive information in a process known as conceptual…

Theoretical and empirical research on argument and argumentation in science education has intensified over the last two decades. The term argument in this review refers to the artifacts that a student or a group of students create when asked to articulate and justify claims or explanations whereas the term argumentation refers to the process of…

This paper presents two general approaches to the assessment of knowledge structures, the first of which entails the building of empirical evidence to support cognitive theory. This type of assessment is concerned with attempting to prove the existence of various knowledge structures; that is, evidence that leads to the construct validity of these…

Presented is an analysis of published research on students' conceptual development in the life sciences with the intent of providing information on the trends and content of those studies. A list of 128 references is appended. (CW)