Search (6 results, page 1 of 1)

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Abstract

Our purpose in this study is to inductively reorganize software interface menu items based an a user's process model. The proposed menu interface in this study used direct users' input, such as goals and strategies for solving their information needs, to reorganize and re-label menus. To assess its effectiveness, efficiency, and user satisfaction with actual users, we implemented and compared this new menu version to the original interface that was based upon a traditional categorical menu organization. The significance of this study is that it incorporates user process modeling into the design of the user interface, providing insights into the impact of such modeling an the usability of an information system. Results from the usability testing do indicate that the proposed menu and the traditional menu are similarly effective for users in terms of task completion time and accuracy. User preferences and debriefing comments from usability testing also indicate users preferred the user-process based arrangement of menu items as displayed. However, the types of tasks (different problem type) suggest significant differences for results in task completion time and in accuracy, sometimes favoring the new version. In other words, usable and effective menu organization depends more an the types of tasks and the domain of knowledge than mere menu organization, although menu organization is a factor in the process.

Source

Journal of the American Society for Information Science and Technology. 56(2005) no.10, S.1098-1112

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Abstract

Aims to better understand the relationship between relevance and user satisfaction, the 2 predominant aspects of user based performance in information systems. Unconfounds relevance and user satisfaction assessments of system performance at the retrieved item level. To minimize the idiosyncrasies of any one system, a generalized, naturalistic information system was employed in this study. Respondents completed sensemaking timeline questionnaires in which they described a recent need they had for geographic information. Retrieved documents from the generalized system consisted of the responses users obtained while resolving their information needs. Respondents directly provided process, product, cost benefit, and overall satisfaction assessments with the generalized geographic systems. Relevance judgements of retrieved items were obtained through content analysis from sensemaking questionnaires as a secondary observation technique. The content analysis provided relevance values on both 5 category and 2 category scales. Results indicate that relevance has strong relationships with process, product and overall user satisfaction measures while relevance and cost benefit satisfaction measures have no significant relationship. This analysis also indicates that neither relevance nor user satisfaction subsumes the other concept, and that understanding the proper units of analysis for these measures helps resolve the paradox of the management information system and information science literature not informing aech other concerning user based information system performance measures

Source

Information processing and management. 32(1996) no.1, S.89-104

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Abstract

Presents brief accounts of the user based performance measure of relevance and the information system-based performance measure of competence. Relevance and competence are shown to be complex notions that have not been studied cojointly. Reports the results of an experiment that used a geographical information system to illustrate how collecting and analyzing data simultaneously from both system and user views of performance can suggest improvements. The user's view was formed by respondents describing how user needs were met by a geographic information system. The system view of the user was described by the accuracy and time on tasks of subjects as they read and answered questions concerning text and maps. This research generated 2 hypotheses: relevance varies directly with levels of competence and experience, and relevance varies directly with the difficulty of the task. Findings also indicate that through a merged, no fault model, information science can contribute to constructing a holistic view of the system performance by illustrating relationships among factors such as competence and relevance, and by exposing new factors such as expectation

Source

Journal of the American Society for Information Science. 46(1995) no.6, S.446-460

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Abstract

Reviews sense making as a concept and method of investiagtion, reviews the study of semiotics in information studies research; explores the theoretical implications of combining sense making and semiotic approaches to information use phenomena; and suggests an empirical approach to clarify the resulting theoretical developments. Applies the Pierce Sign Triad and the Dervin Situation Micro Moment Triad to provide a theoretical and contextual starting point for the researcher. The aim is to apply the technique to correlate data from semiotic analyses of the annual reports of Fortune 100 companies and respondents' sense making interviews regarding these reports

Source

Information seeking in context: Proceedings of an International Conference on Research in Information Needs, Seeking and Use in Different Contexts, 14-16 August 1996, Tampere, Finland. Ed.: P. Vakkari u.a

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Abstract

Jeong and Gluck test the efficacy of haptic perception as realized by vibro-tactile stimulation along with auditory stimulus while transferring choroplethic information (showing different magnitudes of variables at locations) from maps in a geographical information system to 51 useable subjects. User performance is measured by task completion times for 36 tasks, and user satisfaction by asking users for their assessments of the various modalities. The mode of the trial, (haptic, auditory, or combined), the presence or absence of a map legend, the classed or un-classed nature of the map, and the task (identifying the highest or middle value of a set of data) constituted the independent variables. Participants were asked to identify the number of dogs, cats, male nurses, et cetera, shown on 9 state maps. The force feedback mouse provides a vibration proportional to the level of data for that location and a sound is played in one of nine different volume settings. Haptic displays produced faster and more accurate performance than auditory or combined displays although the participants expressed preference for the combined display.

Source

Journal of the American Society for Information Science and technology. 54(2003) no.3, S.229-242