The aims of this paper are twofold. First, we present, justify, and characterise an instrument for analysing students' argumentative reasoning developed from Walton's ideas. Then, from the analysis of students' argumentative discussion about a socio-scientific controversy, we identify the advantages and disadvantages of using the instrument. The…

We present the results of a qualitative research study designed to explore differences in the types of reasoning triggered by information presented to chemistry students in two different formats. One group of students was asked to analyze a sequence of images designed to represent critical elements in the explanation of a target phenomenon.…

There is a crucial debate concerning the nature of chess chunks: One current possibility states that chunks are built by encoding particular combinations of pieces-on-squares (POSs), and that chunks are formed mostly by "close" pieces (in a "Euclidean" sense). A complementary hypothesis is that chunks are encoded by abstract,…