scholarly journals Dynamics of the Central Bottleneck: Dual-Task and Task Uncertainty

PLoS Biology ◽  
2006 ◽  
Vol 4 (7) ◽  
pp. e220 ◽  
Author(s):  
Mariano Sigman ◽  
Stanislas Dehaene
Keyword(s):  
Dual Task ◽  
Task Uncertainty ◽  
Central Bottleneck ◽  
And Task

The Effect of Processing Code, Response Modality and Task Difficulty on Dual Task Performance and Subjective Workload in a Manual System

1987 ◽  
Vol 31 (7) ◽  
pp. 847-851 ◽  
Author(s):  
Yili Liu ◽  
Christopher D. Wickens
Keyword(s):  
Task Performance ◽  
Dual Task ◽  
Task Difficulty ◽  
Task Structure ◽  
Time Sharing ◽  
Multiple Resources ◽  
Response Modality ◽  
Dual Task Performance ◽  
Processing Resources ◽  
And Task

We report here the first experiment of a series studying the effect of task structure and difficulty demand on time-sharing performance and workload in both automated and corresponding manual systems. The experimental task involves manual control time-shared with spatial and verbal decisions tasks of two levels of difficulty and two modes of response (voice or manual). The results provide strong evidence that tasks and processes competing for common processing resources are time shared less effectively and have higher workload than tasks competing for separate resources. Subjective measures and the structure of multiple resources are used in conjunction to predict dual task performance. The evidence comes from both single task and from dual task performance.

Impact of Agency Risks and Task Uncertainty on Venture Capitalist–CEO Interaction

1994 ◽  
Vol 37 (6) ◽  
pp. 1618-1632 ◽  
Author(s):  
Harry J. Sapienza ◽  
Anil K. Gupta
Keyword(s):  
Venture Capitalist ◽  
Task Uncertainty ◽  
And Task

The Relation between the Type A Behavior Pattern, Pacing, and Subjective Workload under Single-and Dual-Task Conditions

1985 ◽  
Vol 27 (6) ◽  
pp. 675-680 ◽  
Author(s):  
Diane Damos
Keyword(s):  
Dual Task ◽  
Significant Interaction ◽  
Behavior Pattern ◽  
Type A ◽  
Type A Behavior ◽  
Type B ◽  
Type A Behavior Pattern ◽  
Single Task ◽  
Task Conditions ◽  
And Task

Twenty Type A and 20 Type B subjects performed two discrete tasks alone and together. Half of the subjects performed paced versions of both tasks; half, unpaced versions. Workload ratings were obtained for all subjects under single-and dual-task conditions using eight bipolar adjective scales. Under single-task conditions there was a significant interaction between behavior pattern and pacing on one of the tasks. This interaction indicated that Type A subjects responded more rapidly under unpaced conditions than did Type B subjects, although there was little difference between the groups under paced conditions. Under dualtask conditions, Type A subjects responded more rapidly than did Type B subjects regardless of pacing. There was one significant interaction between behavior pattern and task on one of the workload scales.

Extraversion and task properties as determinants of incidental recall

1988 ◽  
Vol 2 (1) ◽  
pp. 57-65 ◽  
Author(s):  
José Bermúdez ◽  
Ana M. Pérez ◽  
Miguel Padilla
Keyword(s):  
Hierarchical Structure ◽  
Dual Task ◽  
Task Design ◽  
Arousal Level ◽  
The Hierarchical Structure ◽  
Attentional Selectivity ◽  
Structural Levels ◽  
And Task

The present research investigated in a dual task design the effects of extraversion level and structural task properties on the recall of an incidentally learned text. First, the hypothetical relation between arousal level and attentional selectivity was tested. Second, the relation between structural levels in the text and recall of text elements was studied. It was found that (a) extraverts performed significantly better on incidental recall compared to introverts; (b) the nuclear sentences at the top of the hierarchical structure were the best recalled sentences, independently of arousal level; (c) the effect of differences in arousal on recall was only significant in case of the top sentences. The effect was absent in case of specificúsecondary sentences.

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