肢體動作是情緒表達的方式之一，本研究旨在探討表達情緒時，表達者「動作特性」及「身體方向」對肢體動作情緒表達的影響，及其二者的關係。參考過去研究，本研究使用生氣、害怕、開心及悲傷四種情緒的肢體動作，並操弄平滑度、僵硬度、速度、力道及擴張度五種動作特性；0°、45°、90°三種身體方向，並且以正確率、反應時間及情緒強度作為指標，進行區辨作業及評分作業。本研究共分兩個實驗，每個實驗皆由兩個子實驗構成，兩個子實驗分別使用「一般動作」及「特殊動作」作為呈現刺激。實驗一目的在於探討「動作特性」對情緒表達的影響；實驗二目的在於探討「動作特性」和「身體方向」共同對情緒表達的影響。實驗一A使用一般動作並操弄五種動作特性，藉此得到各情緒的動作特性組合；實驗一B使用特殊動作並操弄動作特性相容性，結果顯示動作特性相容性確實有其效果，相容情況的情緒強度高於不相容情況。實驗二A、二B分別使用一般動作及特殊動作，並操弄五種動作特性及三種身體方向，結果顯示當身體方向符合情緒的趨避動機時，其正確率、反應時間及情緒強度的表現皆較好。综合而言，「動作特性」及「身體方向」在肢體動作表達情緒時確實有其效果，當動作特性相容時，可增進情緒表達力；當身體方向符合該情緒的趨避動機時，也可增進情緒表達力，但動作特性及身體方向二者間的關係為何，本研究仍無法下一定論。 關鍵字：情緒表達、趨避動機、肢體動作、動作特性、身體方向 / Abstract Body movement is one of the ways to express emotion. The purpose of this study is to explore the effects of movement quality and body direction on the emotion expressiveness of body movement. Referring to some previous studies, four kinds of emotion (anger, fear, happiness and sadness) were included in the present study. Five movement qualities (smoothness, stiffness, speed, strength and expansion) and three body directions (0°, 45° and 90°) were manipulated as the independent variables. Response accuracy and reaction times of an identification task and rating scores of the emotion rating task were measured as the dependent variables. There are two experiments in this study which includes two sub-experiments each. One of the sub-experiments adopted non-propositional body movements as stimuli (Experiment 1A & 2A), and the other adopted propositional body movements as stimuli (Experiment 1B & 2B). Experiment 1 aimed to explore the effect of movement qualities. In Experiment 1A, movement quality combinations which can express each of the four emotions were found. Based on this result, in Experiment 1B, movement quality compatibility was manipulated. The results of Experiment 1B confirmed the effect of movement quality compatibility on emotion strength in non-propositional body movement. Experiment 2 manipulated five movement qualities and three body directions. The results showed that when body direction was compatible with the approach-avoidance motivation of the expressed emotion, participant’s performances on response accuracy, reaction times and rating scores were better than that of incompatible ones. In conclusion, both movement quality and body direction can influence the emotion expressiveness of body movement. When movement qualities and body directions are compatible with the expressed emotion, the strength of emotion can be increased. But the relative contributions and the interaction effect of movement qualities and body directions are still unclear. Keywords: emotion expression, approach-avoidance motivation, body movement, movement quality, body direction