망각곡선에 따른 interface task complexity - Rehearsal 의 정도에 따른 작업난이도의 변화를 중심으로

초록

In user interface design, task complexity is traditionally measured by the number of actions and BNF (Bakus-Naur Form) rules for chunking actions that constitute an instructional command. In this paper, task complexity is measured by the level of memory recall on a memory decay function for each command over time. An empirical study suggested that as users did not perform a task frequently, its task complexity got higher as time passed, by which we derived an asymptotic task complexity model along with the number of rehearsal.

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