Abstract
The relationship between organization of knowledge in memory and level of proficiency in the performance of a complex cognitive task was evaluated. Based on their performance in a scenario, 42 Electronic Warfare (EW) technicians were categorized into 3 performance levels. To measure the organization of knowledge, the EWs rated all possible pairs of 24 concepts on degree of relatedness, and a Pathfinder net was created for each subject and for 2 expert EWs. A correlation of 0.40 between performance scores and a concept similarity measure indicates a significant positive association between level of proficiency and knowledge organization. Both high and intermediate performance groups produced nets that were more similar to the expert net than were those of the low performance group. © 1998 John Wiley & Sons, Ltd.
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