在此研究中，我們探討工作記憶容量（working memory capacity）與工作負荷容量（workload capacity）的關係。我們利用三種不同的雙重目標偵測作業（redundant-target detection task）測量受試者的工作負荷容量，並以操作廣度測驗（operation span task）測量受試者的工作記憶容量。在實驗一、二中，我們分別使用非母數（實驗一、二）與母數（實驗二）計算受試者在不同雙重目標偵測作業中的工作負荷容量。實驗一、二的結果均發現，在視聽偵測作業中，高工作記憶容量組的受試者比低工作記憶容量組的受試者有較高的工作負荷容量，且其大部分為超級容量（supercapacity）。然而，當雙重管道訊息均來自視覺系統，如：顏色形狀偵測作業或雙重光點偵測作業時，此效果便不復見。由此研究結果可知，工作記憶中的中央處理系統在整合跨感官訊息的知覺處理歷程中扮演了重要的角色。

We investigated the relationship between working memory capacity (WMC) and workload capacity (WLC). Each participant performed an operation span (OSPAN) task to measure his/her WMC and three redundant-target detection tasks to measure his/her WLC. WLC was computed non-parametrically (Experiments 1 and 2) and parametrically (Experiment 2). Both levels of analyses showed that participants high in WMC had larger WLC than those low in WMC only when redundant information came from visual and auditory modalities, suggesting that high-WMC participants had superior processing capacity in dealing with redundant visual and auditory information. This difference was eliminated when multiple processes required processing for only a single working memory subsystem in a color-shape detection task and a double-dot detection task. These results highlighted the role of executive control in integrating and binding information from the two working memory subsystems for perceptual decision making.

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