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Jeffrey L. Harpster

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Publications by Jeffrey L. Harpster (bibliography)

1987

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Harpster, Jeffrey L. (1987): Random versus Ordered Menus in Self-Terminating Menu Searches. In: Proceedings of the Human Factors Society 31st Annual Meeting 1987. pp. 718-721.

“An experiment testing the effectiveness of ordering menus in a self-terminating menu search task is described. Twelve subjects participated in the search task which consisted of traversing menus in a database of 4,096 items. Four depth vs. breadth combinations were used. Half of the subjects started on a series of randomly ordered menus while the remainder began on sequentially ordered menus. As expected, the ordering of items on the menus did improve performance. It was observed that ordering the elements grew in importance as the number of elements on the menu increased. The subjects' search strategies are discussed as well as possible applications of the data in the design of menu selection systems.”

1984

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Harpster, Jeffrey L. and Freivalds, Andris (1984): VDT Screen Resolution and Operator Performance. In: Shackel, Brian (ed.) INTERACT 84 - 1st IFIP International Conference on Human-Computer Interaction September 4-7, 1984, London, UK. pp. 91-95.

“The study compared operator performance on a visual search task with the resolution of the display used. The four displays consisted of low, high, high resolution simulating low resolution and hard copy print as a control. Performance was significantly worst on the low resolution, better for the high resolution modes displays and was best for hard copy print. An explanation based on the spatial frequency characteristics of the display stimulating the accommodative system is given.”

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