This paper discusses some of the methodological challenges that can be encountered when usability testing with visually impaired users. These include (1) the need for customized t...
Although the notion of generality is central in mathematics and science, being able to identify and express general patterns and/or articulating structures is one of the main difï...
While weblogs have been conceptualised as personal thinking spaces since their early days, those uses have not been studied in detail. The purpose of this paper is to explore how ...
Why do people create extra representations to help them make sense of situations, diagrams, illustrations, instructions and problems? The obvious explanation-external representatio...
This paper presents a new way of categorizing behavior change in a framework called the Behavior Grid. This preliminary work shows 35 types of behavior along two categorical dimen...