University of Twente Student Theses


Deception detection and eye-tracking : how biases affect our veracity judgement ability

Jungfer, T.N. (2021) Deception detection and eye-tracking : how biases affect our veracity judgement ability.

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Abstract:The general ability of humans in detecting deception is a little above chance and often based on guessing. A major factor for this low veracity judgment ability are false biases people hold about deception cues. The goal of the research was to examine the impact of different levels of knowledge about deception cues and biases on veracity judgment ability. To answer this question participants needed to interview a suspect in a mock-crime scenario while wearing eye-tracking glasses. Participants got randomly assigned to a training and no-training condition. A bias questionnaire was used to compare the different levels of knowledge. To compare veracity judgment ability the lie detection accuracy and eye-tracking data were used. There were two key findings of the present research. First, a short training was enough to dismantle people’s biases and heighten their understanding of biases and correct deception cues. However, it was not enough to improve the practical ability to detect lies, called veracity judgment ability. This led to the conclusion that veracity judgment is a skill relying on years of experience rather than theoretical training. Future research might be required to assess different forms and time spans of training needed to improve people’s veracity judgment ability.
Item Type:Essay (Bachelor)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:77 psychology
Programme:Psychology BSc (56604)
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