이 글에서는 안동 지역어의 단모음 체계 변화와 언어 외적 변인의 상관성을 논의하였다. 논의 결과, 안동 지역어의 단모음 체계 변화에 관계하는 언어 외적 변인은 연령, 성, 학력, 말투 등이 있고, 특히 이 가운데서 연령이 언어 외적 변인으로 크게 작용함을 알았다. 이러한 결과는 단모음 체계는 연령, 성, 학력, 말투 등의 변인을 고려하여 파악되어야 한다는 점, 단모음 체계에 대한 기술에 있어서 연령층에 따른 이질성을 특히 고려해야 한다는 점을 일깨워준다.

This writing has discussed the Andong-regional dialect focusing on a correlation between a change of a single vowel system in Korean Language, which is currently occurring, and external factors outside of language. First, a single vowel system of the Andong-regional dialect varies in age groups. Second, /ㅔ/ and /ㅐ/ are not subject to any external factors in the Andong-regional dialect, merging in all age groups. Third, according to age, /ㅟ/ and /ㅚ/ stand at the turning point in the Andong-regional dialect. In addition, their realized aspects varies according to gender. The higher level of education one has, the more he responds by pronouncing [wi], [we]. The rate of realized /y/(/ø/) is the highest in a formal talking, decreasing remarkably in pronouncing words or phrases. Still, in spite of gender, academic background, or the way of speaking, the vowel system does not change itself. Forth, /ㅔ/ and /ㅐ/ varies in age groups. In terms of a correlation between a change of a single vowel system in the Andong-regional dialect and external factors outside of language, it might be said that age, gender, academic background, the way of speaking are factors outside of language in a change of a single vowel system in Korean Language In this study, it is awakening that the age factor should be taken into consideration in a vowel system of Korean Language, and age-specific difference should be factored in when describing a single vowel system.