Effect of template complexity on visual search and dual-task performance

被引:9
作者
Bourke, PA [1 ]
Duncan, J
机构
[1] Lincoln Univ, Dept Psychol, Brayford Pool LN6 7TS, Lincs, England
[2] MRC, Cognit & Brain Sci Unit, Cambridge, England
关键词
D O I
10.1111/j.0956-7976.2005.00805.x
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Even dissimilar tasks interfere with one another when done together. We used visual search to examine the underlying cause of such interference. In many models, visual search is a process of biased competition controlled by a template describing the target to be sought. When the display is processed, matching against this template guides attention to the target. We show that increasing template complexity increased interference with a dissimilar concurrent task, story memory. This result was independent of reaction time: Increases in template complexity were associated with no increase in search time in Experiment 1 and with a decrease in search time in Experiment 2. The results show that the dual-task demands of visual search reflect the complexity of the template used in task control, and that this factor can be isolated from other sources of difficulty.
引用
收藏
页码:208 / 213
页数:6
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