Abstract
This experiment examined the relation between individual differences in multiple-task performance and subjective estimates of workload. 30 women performed various complex tasks alone and together and rated each task and task combination on 10 bipolar adjective scales describing different dimensions of workload. The subjects also completed tests of field dependence, memory span, and time estimation. Two classification schemes were used to identify each subject. One was based on the subject's dual-task response strategy and the other, on the subject's performance on a complex monitoring task. As the data showed little evidence of consistent individual differences on the monitoring task, this classification system was subsequently dropped. Group differences in between-response strategies were found on two of the workload scales. Some between-group trends were found on the time estimation and memory-span tasks, suggesting additional topics for investigation.
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