Discussion of explanations and knowledge representation within knowledge-based systems focuses on the development of an expert system for purification of proteins in a Swedish laboratory. Topics include domain conceptualization; a multiple-explanation construction model; a study of laboratory staff that investigated construed explanations; and…

Based on a larger study of technophobia and technological sophistication, this study assessed computer anxiety among undergraduates in 10 countries and compared the factor structure found in the United States to that found in 9 other countries. Highlights include Interactive Computer Learning Anxiety; Consumer Technology Anxiety; Computer…

Describes a study that established a measure and model for use in predicting and explaining electronic mail systems as an example of computer-mediated communication technologies usage and choice. The results indicated that all of the eight hypotheses showed significant correlation between criterion and predictor variates, supported by different…

Describes a new model for quantitatively assessing screen formats. Results of applying the model to data entry screens support the use of the model. Also described is a critiquing mechanism embedded in a user interface design environment as a demonstration of this approach. (Author/AEF)