노인집단의 다중 정보 통합과정에 대한 연구 = Age differences in integrating multiple sources of information in working memory

다국어 초록 (Multilingual Abstract)

The purpose of the present study was to examine the age-difference effect among adults in their working memory abilities to integrate and coordinate multiple sources of information. The performances of 20 young adult participants and 16 aged (Mean = 59.75 yrs. old) participants in two different levels of integration tasks, comparison task and reasoning task, were compared with their performance in coordination task. Young participants showed a longer response time in coordination task than in comparison task, but showed no difference in response time for reasoning task and for coordination task. In contrast to young participants, the aged participants showed a longer response time in integration task than in coordination task. The results were interpreted as supporting the frontal lobe dysfunction theory, and that aging brain entails a decline in the working memory ability of integrating information from different sources, especially when the integration is of making inferences rather than of simply comparing the information.

국문 초록 (Abstract)

전전두엽기능이론이 예상하듯이 시각정보처리와 언어정보처리를 동시에 개별적으로 수행하는 과제보다 통합하여 처리하는 과제가 노인집단에게 더 어려운지 살펴보았다. 이를 위해 20명의 청년집단과 16명의 노인집단 참가자들에게 병행과제, 낮은 수준의 통합과제인 비교과제, 그리고 높은 수준의 통합과제인 추리과제를 수행하게 하였다. 청년집단의 경우 병행과제보다 비교과제의 수행시간이 더 짧았고 병행과제와 추리과제간의 수행시간의 차이는 유의하지 않았다. 그러나 노인집단의 경우 병행과제보다 비교과제의 수행시간이 더 길었고 추리과제의 수행시간이 다른 과제에 비해 가장 길었다. 이 결과는 작업기억에서 중앙집행기의 기능이 노화에 따라 감퇴되어 여러 정보를 통합하여 처리하는 경우 노인집단이 수행의 어려움을 겪는 것으로 해석되었다.

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