STUDIES OF COMPONENT-TOTAL TASK RELATIONS: ORDER OF COMPONENT-TOTAL TASK PRACTICE AND TOTAL TASK PREDICTABILITY.
AMERICAN INSTITUTES FOR RESEARCH SILVER SPRING MD
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The purpose of this study was to examine the relationships between performance on a complex total task and the performance on various components of that task when the latter are practiced in different orders. The total task The Complex Coordinator was represented as a composite of single-level andor double-level task components. When the order in which the various tasks was ignored, 31.6 of the total task variance could be accounted for by the component task scores, but when order of practice was taken into account total task variance accounted for varied from 32.5 up to 70.6 depending on which particular double-level and single-level tasks were combined to predict total task scores. Thus order of practice on part tasks component tasks with respect to the total task makes a difference in predicting total task proficiency. More specifically, observed and predicted total task scores agree better when double-level components are practiced before the total task than when they are practiced after the total task. Also, total task proficiency is significantly improved by prior practice on double-level tasks. Prior practice on single-level tasks did not lead to significant total task improvement. Author
- Human Factors Engineering and Man Machine Systems