Cognitive dimensions of notations
Proceedings of the fifth conference of the British Computer Society, Human-Computer Interaction Specialist Group on People and computers V
Usability inspection methods
The cognitive walkthrough method: a practitioner's guide
Usability inspection methods
The skull beneath the skin: entity-relationship models of information artifacts
International Journal of Human-Computer Studies - Special issue: the role of cognitive science in human-computer interaction
Contextual design: defining customer-centered systems
Contextual design: defining customer-centered systems
Group and Individual Time Management Tools: What You Get is Not What You Need
Personal and Ubiquitous Computing
The cognitive dimension of viscosity: A sticky problem for HCI
INTERACT '90 Proceedings of the IFIP TC13 Third Interational Conference on Human-Computer Interaction
Getting into a system: External-internal task mapping analysis
CHI '83 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Formal Comparisons of Program Modification
VL '00 Proceedings of the 2000 IEEE International Symposium on Visual Languages (VL'00)
Analytical usability evaluation for digital libraries: a case study
Proceedings of the 4th ACM/IEEE-CS joint conference on Digital libraries
The nature of device models: the yoked state space hypothesis and some experiments with text editors
Human-Computer Interaction
Towards an empirical method of efficiency testing of system parts: A methodological study
Interacting with Computers
Evaluating system utility and conceptual fit using CASSM
International Journal of Human-Computer Studies
Engineering Interactive Systems
Bringing users' conceptual models into design: an introduction to CASSM analysis
Proceedings of the 2nd ACM SIGCHI symposium on Engineering interactive computing systems
Using and utilizing an innovative media development tool
Proceedings of the 10th Brazilian Symposium on on Human Factors in Computing Systems and the 5th Latin American Conference on Human-Computer Interaction
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Many of the difficulties users experience when working with interactive systems arise from misfits between the user's conceptualisation of the domain and device with which they are working and the conceptualisation implemented within those systems. We report an analytical technique called CASSM (Concept-based Analysis for Surface and Structural Misfits) in which such misfits can be formally represented to assist in understanding, describing and reasoning about them. CASSM draws on the framework of Cognitive Dimensions (CDs) in which many types of misfit were classified and presented descriptively, with illustrative examples. CASSM allows precise definitions of many of the CDs, expressed in terms of entities, attributes, actions and relationships. These definitions have been implemented in Cassata, a tool for automated analysis of misfits, which we introduce and describe in some detail.