交差点における一時停止行動の自己評価バイアス

抄録

One reason drivers don’t stop at stop signs is they think that they can stop though they actually can’t.　This research seeks to clarify whether drivers can properly self-evaluate their own stopping behavior. Fifteen taxi drivers participated. We took movies of how the taxi drivers on duty turned left at a crossing with a stop sign using a video camera in front of the intersection.　We blurred the drivers’ faces and license plates so the participants would not recognize the drivers when they watched the videos. They evaluated the stopping behavior with a visual analogue scale on which the right end represents risk and the left end represents safety.　They watched the videos in which the drivers were themselves and evaluated the stopping behavior （A）.　They then imagined their own usual stopping behavior at the crossing and evaluated that behavior （B）. The analysis revealed a significant difference between A and B. They evaluated their usual stopping behavior as being safer than that in the videos. None of the participants recognized that they themselves were the drivers in the videos and strongly criticized their own stopping behavior.