ISSN : 1229-0696
본 연구는 도로횡단 행동에서 관찰되는 연령에 따른 차이를 신호탐지론에 기반하여 설명하기 위해 수행되었다. 이를 위해 실험참가자들에게 실제 도로상황을 촬영한 영상을 보고 자신의 보통 보행속도로 도로를 횡단할 수 있는지의 여부와 자신의 판단에 대한 확신 수준을 보고하도록 하였다. 본 연구의 결과를 요약하면 다음과 같다 .(1) 실험참가자의 반응유형을 신호탐지론의 네 가지 반응으로 분류하여 그 빈도를 분석한 결과, 젊은층 집단은 ‘적중 반응’의 비율이 상대적으로 높았던 반면, 고령층 집단은 ‘헛경보 반응’, ‘탈루 반응’ 비율이 더 높았다. (2) 안전한 횡단 여부의 정확성을 반영하는 민감도는 젊은층 집단이 고령층 집단 보다 높았고, 횡단 결정의 반응 경향성을 반영하는 반응편향은 고령층 집단이 젊은층 집단에 비해 더 보수적이었다. 또한 (3) 고령 보행자들은 자신의 횡단결정 정확도에 대해서는 젊은층보다 상대적으로 더 높은 수준으로 과다확신하는 경향을 보였다. 이러한 결과는 추후의 교통 환경의 개선과 교육 방법의 개발 등에 유용한 기초자료로 쓰일 수 있을 것이다.
The purpose of the present study was to investigate the age difference in road crossing behavior. The participants were instructed to report whether they can cross the road(this road scene the other elements relating to road crossing were recorded previously and projected the simulation screen) after the leading vehicle passed them(i. e., before the target vehicle arrived). The participants' judgment accuracy and response bias were analyzed by using signal detection theory. The results showed that the old group tended to be less sensitive and more conservative in deciding road crossing. This tendency implies that the aged group's low sensitivity can be one of the major factors of their high accident rate in road-crossing situation.
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