本文描述臺灣閩南方言接觸融合的音變，以鹿谷及安平方言為憫，從語言及社會因素探討影響音變的機制O 我們假設影響音蠻的語言因素條件是: (1)接觸的新語音，在方音系統中是否為獨立的音素; (2)音變是否有助於音韻系統結構的對稱平衡; (3)音變是否有助於區辨音與音的差異。社會因素的條件為: (1)方音是否具備負面社會評價; (2)是否向鄰近強勢方音靠攏。我們做設具備越多上述利於音變的條件，則音變的程度越高。調查結果顯示，鹿谷及安平方言的音變，符合我們的假設O 本文以Labov 的理論架構，進一步提出影響音變的語言、社會因素之條件，探討方言接觸造成的音素或非音素性的變異與變化O

This study examines ongoing sound changes in two Taiwanese dialects,Lok-kok and An-peng, through an investigation of the degrees of lexicaldiffusion, which we believe are caused by linguistic and social factors. Withrespect to linguistic factors, we predict that a sound will undergo fasterchange if a more prestigious dialect has a corresponding sound as anotherphoneme in its phonological system. We also confirm the idea that a lack ofpattern congruence will enhance sound change. Thirdly, we find that soundchange occurs more readily if it results in a sound that is more distinct fromother sounds. Social factors can influence sound change, too, such as when adialect is negatively evaluated by speakers of other dialects (exemplified inthe changes occurring to a number of uncommon sounds in the Lok-kokdialect). In addition, sound change can occur at a faster rate under the influenceof more prestigious neighboring dialects. Overall, our results show thatthe sound changes in both Lok-kok and An-peng dialects correlate with ourpredictions regarding both linguistic and social factors.