Suchergebnisse

This study was concerned with problem solving under two display conditions. In one condition ("Sequential"), only those response alternatives permissable at any given time were displayed at that time. Under the other condition ("Batch"), all response alternatives, permissable at the moment or not, were presented at all times. Significantly greater time was found to be required to learn solutions using the "Batch" display. This requirement was attributed to the significantly greater display search-time which was found to be required in that condition. No significant difference in number of trials to reach the criterion of learning solutions was found, indicating that the additional material displayed in the "Batch" condition carries no significant amount of useful information. It is concluded that displaying data which has only potential relevance is not only ineffective but actually degrades performance.

This paper selectively compares human factors field testing with laboratory experimentation. Although each is derived from the scientific method, there are critical differences between the two research settings. Field testing is not a simple extension of the laboratory into an operational setting. Techniques, procedures, and research strategies differ; a technology is evolving to bridge the gap between the two research domains.