| Abstract [eng] |
The ability of witnesses to recall audio information and recognize the voice may have a particular value on criminal investigation. Here, it is important to find out, how accurately and comprehensively people can recall audio information immediately and after a certain amount of time and whether people can recognize a stranger’s voice once heard. A quasi-experiment was used to investigate this. 60 students or people who had completed studies no more than 5 years, 22 men, and 38 women, aged 18-30 years took part in this study. The study consisted of two phases. In the first phase, participants listened to a recording and, after a brief distraction task, performed an audio information recall task. In the second phase, which was a week later, the audio information recall task was repeated and the subjects were randomly assigned into two groups to perform the task of voice recognition. Some were presented with a voice lineup with a memorable voice, and others without a memorable voice. During both phases, participants access the confidence in audio recall and voice recognition accuracy, the complexity of the procedure, and the experienced anxiety. The results showed that the accuracy and comprehension of audio information recall significantly decreased after a week. Participants who were presented with a voice lineup with a memorable voice and without memorable voice were equally likely to make mistakes in the voice recognition task. Confidence in voice recognition accuracy did not relate to real voice recognition accuracy. Further research should focus on how longer time interval affects the accuracy of audio information and how different speech characteristics affect the accuracy of voice recognition. |
