The overall aim of this article is to stimulate discussion about the activities within CER, and to develop a more thoughtful and explicit perspective on the different types of research activity within CER, and their relationships with each other. While theories may be the most valuable outputs of research to those wishing to apply them, for…

We used both student interviews and diagnostic testing to reveal students' misconceptions about number representations in computing systems. This article reveals that students who have passed an undergraduate level computer organization course still possess surprising misconceptions about positional notations, two's complement representation, and…

The ability to reason with formal logic is a foundational skill for computer scientists and computer engineers that scaffolds the abilities to design, debug, and optimize. By interviewing students about their understanding of propositional logic and their ability to translate from English specifications to Boolean expressions, we characterized…

The recognition that human minds/brains are finite systems with limited resources for computation has led some researchers to advance the "Tractable Cognition thesis": Human cognitive capacities are constrained by computational tractability. This thesis, if true, serves cognitive psychology by constraining the space of computational-level theories…

A number of educational researchers have developed pedagogical approaches that involve the teacher in discovering and helping to correct misconceptions that students bring to their study of their subject matter. During the last decade, several computer systems have been developed to support teaching and learning using this kind of approach. A…

Describes a study that explored the parameter-related misconceptions of two college students in an introductory programming course. Explains how they were able to construct correctly functioning modular programs by making adjustments to formal parameter lists; discusses results within a constructivist framework; and suggests implications for…

Although some see cyberspace as a transcendent medium that will naturally and inevitably usher in a Golden Age, allowing us to ascend to a higher plane of consciousness, the history of computer science refutes this myth. Instead of being the product of an evolutionary process, cyberspace has been deliberately designed by individual people. (PEN)

The implementation of a new computer science (CS) curriculum in high schools which includes all the basic elements of traditional CS programs, motivated a research to determine how students conceive the very fundamental notion of efficiency. Since this was the first time that algorithm efficiency was integrated into a high school curriculum, our…

Describes a simple 16-item instrument, the Propositional Logic Test (PLT), that is based on Piagetian theory and a study that explored the use of the PLT in diagnosing student misunderstandings. Analysis of individual student responses revealed a number of systematic errors in interpreting the logical operations in the PLT items. (Contains 23…

Some women have various misconceptions about technology careers. Some of them think that one has to be a geek in order to become a computer scientist. When the Women in Computing Group at Indiana University (WIC@IU) was looking for ideas on how to increase the number of women in computing majors at IU, the authors realized that women were turning…