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Marwan Rasamny

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Publications by Marwan Rasamny (bibliography)

1990

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Gould, John D., Greene, Sharon L., Boies, Stephen J., Meluson, Antonia and Rasamny, Marwan (1990): Using a Touchscreen for Simple Tasks. In Interacting with Computers, 2 (1) pp. 59-74.

“This work was done in the context of an interdisciplinary project (called ITS) aimed at producing new tools for computer application development. One motivation is to provide designers with a computer-based toolkit from which they can select human-computer interaction techniques appropriate to various contexts and conditions. These experiments extend our work to touchscreens, and provide a basis of comparison with keyboards and arrow keys. Three human-computer interaction methods, including basic entry and autocompletion, were studied in two simple laboratory scenarios: participants specified dates and airlines reservations. Autocompletion was preferred over, and was faster than, basic entry. The a priori countable, minimum number of touches required to use a particular interaction method is a good predictor of how much time people will need to use that interaction method on a particular task. Similar results were found previously with keyboards and arrow keys.”

1988

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Gould, John D., Boies, Stephen J., Meluson, Mia, Rasamny, Marwan and Vosburgh, Ann Marie (1988): Empirical Evaluation of Entry and Selection Methods for Specifying Dates. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 279-283.

“Experienced and inexperienced computer users used seven different interaction methods to specify dates of events. Key results were that the three entry methods were faster, more accurate, and preferred over the four selection methods -- by both experienced and inexperienced computer users. The rank order of performance with these methods was about the same for both groups. Number of keystrokes required by each method was a good predictor of performance time. For selection tasks, decomposing them into separate fields is advisable.”

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Greene, Sharon L., Gould, John D., Boies, Stephen J., Meluson, Antonia and Rasamny, Marwan (1988): Entry-Based versus Selection-Based Interaction Methods. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 284-287.

“Five different human-computer interaction techniques were studied to determine the relative advantages of entry-based and selection-based methods. Gould, Boies, Meluson, Rasamny, and Vosburgh (1988), found that entry techniques aided by either automatic or requested string completion, were superior to various selection-based techniques. This study examines unaided as well as aided entry techniques, and compares them to selection-based methods. Variations in spelling difficulty and database size were studied for their effect on user performance and preferences. The main results were that automatic string completion was the fastest method and selection techniques were better than unaided entry techniques, especially for hard-to-spell words. This was particularly true for computer-inexperienced participants. The database size had its main influence on performance with the selection techniques. In the selection and aided-entry methods there was a strong correlation between the observed keystroke times and the minimum number of keystrokes required by a task.”

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