Göl, Selin and Rasztar, Felicitas and Jansen, Corné (2022) Measuring Pupil Dilation in a Concealed Information Test Using Rapid Serial Visual Presentation. Bachelor thesis, Psychology.
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Abstract
In combination with rapid serial visual presentation (RSVP), pupillometry has been proposed as a useful measure during concealed information testing. Indeed, past research proved that RSVP streams counter the deception methods applied by deceivers. Previous studies successfully used electroencephalography (EEG) to detect concealed identity information in RSVP streams. Yet pupillometry offers a more affordable and practical solution since a dilated pupil indicates recognition and salience. In the current study, we investigated whether concealed identity information can be detected with pupillometry during RSVP. More specifically, we asked 36 participants to look for a fake name and ignore their real name or to look for their real name in an RSVP task while their pupil sizes were tracked. We predicted that participants will not be able to prevent their pupils from dilating upon seeing a familiar stimulus, even when asked to do so. The results showed that the pupil response was larger for the fake name and real name when compared to the control names, yet not significant for the time window we chose upon a previous study’s recommendation (320ms – 1,120ms). The exploratory analysis yielded significant results for a smaller time frame (640ms – 920ms) when comparing the real and control name conditions. We conclude that there is no significant positive relationship between concealed identity information and pupil dilation from 320ms to 1,120ms. This study opens avenues for further research into predicting the right time frame for the effect to occur. Keywords: criminal investigations, concealed information testing, rapid serial visual presentation, pupillometry
| Item Type: | Thesis (Bachelor) |
|---|---|
| Supervisor name: | Mijn, W.R. van der |
| Degree programme: | Psychology |
| Differentiation route: | None [Bachelor Psychology] |
| Date Deposited: | 31 May 2022 07:06 |
| Last Modified: | 31 May 2022 07:06 |
| URI: | http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/487 |
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