The effects of task complexity and time availability limitations on human performance in database query tasks

被引：53

作者：

Topi, H ^{[1
]}

Valacich, JS ^{[1
]}

Hoffer, JA ^{[1
]}

机构：

[1] Bentley Coll, Smith Technol Ctr 403, Waltham, MA 02476 USA

来源：

INTERNATIONAL JOURNAL OF HUMAN-COMPUTER STUDIES | 2005年 / 62卷 / 03期

关键词：

usability; database query task; task complexity; time availability; time pressure;

D O I：

10.1016/j.ijhcs.2004.10.003

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Prior research on human ability to write database queries has concentrated on the characteristics of query interfaces and the complexity of the query tasks. This paper reports the results of a laboratory experiment that investigated the relationship between task complexity and time availability, a characteristic of the task context not investigated in earlier database research, while controlling the query interface, data model, technology, and training. Contrary to expectations, when performance measures were adjusted by the time used to perform the task, time availability did not have any effects on task performance while task complexity had a strong influence on performance at all time availability levels. Finally, task complexity was found to be the main determinant of user confidence. The implications of these results for future research and practice are discussed. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：349 / 379

页数：31

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