The Effect of Strategy in Second Order Manual Control on Resource Competition with a Sternberg Memory Search Task.
Abstract
This study examines the effects of two different strategies of second order manual control performance on dual-task interference using the multiple resources framework. A 'response-strategy' involves discrete time-optimal double impulse control based on momentary error. A perceptual strategy involves continuous control basd upon momentary error velocity. Subjects can obtain equal levels of single task performance on both tasks. Each strategy is then time-shared with a Sternberg Memory Search task, which uses either spatial or visual material and is displayed either auditorily or visually. Two different biases of resource allocation between the two tasks are also included. An additional manipulation was task emphasis. In different conditions subjects are requested to emphasize tracking on the Sternberg task. The results indicated that performance using the response strategy showed a greater effect of changes in the Sternberg task code and modality than did performance using the perceptual strategy. Benefits in dual-task performance were realized with the auditory display when in double impulse, but not the continuous strategy, was employed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1984
- Accession Number
- ADA150985
Entities
People
- B. P. Goettl
- C. D. Wickens
Organizations
- University of Illinois Urbana–Champaign