本研究的目的是比較不同報告順序對於多元向度刺激符號辨識之影響。研究中採用的多元向度刺激符號，有顏色向度和形狀向度兩種向度；八位健康成人依照隨機指示，採「先顏色後形狀」或「先形狀後顏色」的報告順序執行按鍵反應。並應用事件相關電位來探討報告順序在多元向度刺激辨識的影響。 實驗結果發現，報告順序會影響多元向度刺激符號之辨識。「先顏色後形狀」的報告順序之第一向度平均反應時間顯著較慢，第二向度平均反應時間較快，但未達顯著差異，總反應時間兩種報告順序也沒有顯著差異。然而「先形狀後顏色」的報告順序的轉換成本較大，顯示其刺激反應相容性較低，是較不符合長期語言習慣。由事件相關電位顯示，不符合長期語言習慣的「先形狀後顏色」報告順序，有較大N2振幅之顯著差異；顯示在執行此種報告順序時，受試者對另一種符合長期語言習慣的報告順序的競爭抑制程度較高。

An experiment was conducted to evaluate the effect of order of reporting stimulus dimension in multidimensional stimulus identification using switch task paradigm. Eight healthy participants were required to identify each two-dimensional symbol by pushing the corresponding buttons on the keypad on which there were two columns representing the two dimensions, color and shape. The two orders of report were Order Color/Shape and Order Shape/Color. There was a task cue prior to each presentation of a symbol indicating the particular report order the participants should perform. The cue changed randomly. Both behavioral data and event-related potentials were collected. Analysis of variance showed that order of report had a significant effect on response time for the first dimension. Response time for the first dimension for Order Color/Shape was significantly longer than Order Shape/Color. Response time for the second dimension for Order Color/Shape was shorter than Order Shape/Color but was not statistically significant. Analysis of behavioral data showed switch cost indicated by increase in response time was greater for Order Shape/Color, a less appropriate order of reporting dimensional values, than Order Color/Shape. Neural activities under Order Color/Shape and Order Shape/Color were different, and it seems plausible that participants showed more N2 inhibition for Order Shape/Color than for Order Color/Shape which fits the Chinese adjective-then-noun language habit.