Sources of flexibility in human cognition: dual-task studies of space and language

Article Abstract:

Research was conducted to examine the process underlying the flexible conjunction of information using a dual-task method. Subjects in the first experiment reoriented themselves flexibly when they performed no secondary task but reoriented themselves when they engaged in verbal shadowing of continuous speech. Subjects in the second experiment who engaged in nonverbal shadowing of a continuous rhythm reoriented like nonshadowing subjects. Results indicate that the interference influence in the first experiment did not result from general limits on working memory or attention but from processes more specific to language.

Spatial behavior, Human spatial behavior, Psycholinguistics

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Decision and response in dual-task interference

Article Abstract:

Stimuli and response selection experiments reveal a processing stage that cannot function simultaneously between two concurrent tasks. A processing bottleneck at response execution was observed when response time differences between detection and decision occur during response selection. Additional experiments also show that task strategy and response preparation fail to reduce response selection effects with reducing stimulus onset asynchrony.

Decision-making, Decision making, Human information processing

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Component processes in task switching

Article Abstract:

The delay between choosing to switch tasks is caused by several essential components. These include reflection, dissipation of the previous task parameters, preparation for the new task, and a residual component.

Israel, Task analysis

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