人類經驗的獲取主要來自於視覺和觸覺，不同的資訊需要透過不同的感覺系統來感知。例如，顏色需要依靠觸覺來感知，而重量需要依靠觸覺來感知。雖然有些資訊無論透過視覺或觸覺都可以獲得，其引發的心理反應卻不盡相同。在不破壞美觀的條件下，更強調觸覺的感受，將可能增加產品體驗的豐富性。另一方面，情緒是構成人類經驗的重要因素，在情感設計的領域，情緒亦是重要議題。而質感是材質表面的重要特徵之一，並且經常是影響視覺與觸覺感受的重要因素。其中，水果表面質感大多有明顯可區別的特徵，個別產生的視觸覺體驗應該也有明顯的不同，因此，對水果表面質感的探討可能有利於本研究進行，並且也有助於未來新質感開發的應用。綜合以上論述，本研究之目的欲透過情緒反應探討何種水果表面質感可以引發較明顯而豐富的觸覺體驗。
在實驗中，受試者將依序以觸覺、視覺以及視觸覺感知15種不同的水果表面質感，並以描繪的臉部表情配合李克尺度量表記錄其各種情緒反應的程度。本研究將以多元尺度法與集群分析找出各質感感知與情緒反應的關聯，再以多變量分析與廻歸分析驗證集群分析的結果並深入探討各知覺間的關聯性。
研究結果發現，就情緒反應而言，確實存在某些水果表面質感可以產生較明顯而豐富的觸覺體驗這類質感可能具備下列兩種特徵 (1) 要不極端平滑(如蘋果、梨子、香蕉)，就是極端凹凸不平(如鳳梨、釋迦)。(2) 有彈性、細緻且幾乎沒有瑕疵(如番茄、楊桃)。此外，均勻紋理的質感引發的情緒偏向興奮或愉悅；暖色系和亮色系的質感引發的情緒偏向愉悅；平滑的質感引發的情緒偏向放鬆或愉悅；而與這些相反的物理特徵可能引發相反的情緒反應。

Human experience is mainly acquired from vision and touch, and different information requires different sensory system to perceive it. For example, color requires vision to perceive it, and weight requires touch to perceive it. Although some information can be perceived by either vision or touch, different mental response may be evoked through different perception on the same information. On the basis of reserving the beautiful appearance, enriching the tactile experience may also enrich the product experience. On the other hand, emotion is one of the key factors that constitute human experience and also an important issue in the field of affective design. Texture is a major feature on the surface of material, and it often deeply influences both the feeling of vision and touch. Most textures of fruit surface are apparently distinguishable that many different kinds of visual and tactile experience can be produced, so the research of fruit-surface texture may facilitate this study and also contribute to the development of new texture in the future. Integrating the background information above, this study aims to find out the texture of fruit-surface which can produce apparent and rich tactile experience in terms of emotional response.
In the experiment, subjects were asked to perceive 15 textures of fruit-surface through visual, tactile perception and the multi-perception of vision and touch respectively, and report the emotional response with the depict facial expression and Likert Scales. Multidimensional Scaling (MDS) and Cluster Analysis were applied to find out the emotional relevance between the texture and the perceptions. Besides, Analysis of Variance (ANOVA) and Stepwise Regression were applied to test the result of Cluster Analysis, and also help to discuss the emotional relevance between the three perceptions.
According to the result of this study, some textures of fruit-surface certainly produce more apparent and richer tactile experience in terms of emotional response, and two types of physical characteristics occurs for these textures (1) either extremely smooth (apple, pear, banana) or extremely rough (pineapple, sugar apple ) (2) flexible, refined and almost without defect (carambola, tomato). Moreover, uniform grain might evoke excitement and pleasure; perfectly even texture would evoke pleasure; perfect evenness and warm color might evoke pleasure. Besides, the opposite of the features might evoke the opposite emotion.

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