TY  - JOUR
PY  - 2007//
TI  - Predicting dual-task performance with the Multiple Resources Questionnaire (MRQ)
JO  - Human factors
A1  - Boles, David B.
A1  - Bursk, Jonathan H.
A1  - Phillips, J. B.
A1  - Perdelwitz, Jason R.
SP  - 32
EP  - 45
VL  - 49
IS  - 1
N2  - OBJECTIVE: The objective was to assess the validity of the Multiple Resources Questionnaire (MRQ) in predicting dual-task interference. BACKGROUND: Subjective workload measures such as the Subjective Workload Assessment Technique (SWAT) and NASA Task Load Index are sensitive to single-task parameters and dual-task loads but have not attempted to measure workload in particular mental processes. An alternative is the MRQ. METHOD: In Experiment 1, participants completed simple laboratory tasks and the MRQ after each. Interference between tasks was then correlated to three different task similarity metrics: profile similarity, based on r(2) between ratings; overlap similarity, based on summed minima; and overall demand, based on summed ratings. Experiment 2 used similar methods but more complex computer-based games. RESULTS: In Experiment 1 the MRQ moderately predicted interference (r = +.37), with no significant difference between metrics. In Experiment 2 the metric effect was significant, with overlap similarity excelling in predicting interference (r = +.83). Mean ratings showed high diagnosticity in identifying specific mental processing bottlenecks. CONCLUSION: The MRQ shows considerable promise as a cognitive-process-sensitive workload measure. APPLICATION: Potential applications of the MRQ include the identification of dual-processing bottlenecks as well as process overloads in single tasks, preparatory to redesign in areas such as air traffic management, advanced flight displays, and medical imaging.<p />  <p>Language: en</p>
LA  - en
SN  - 0018-7208
UR  - http://dx.doi.org/
ID  - ref1
ER  -