Masarà, Linda (2022) Concealed Information Testing with Rapid Serial Visual Presentation, Pupillometry, and Face Stimuli presentation. Bachelor thesis, Psychology.
|
Text
s3981827_LindaMasarà_Bachelor'sThesis.pdf Download (319kB) | Preview |
Abstract
Concealing information is a common practice that humans apply to many different contexts. However, because in situations such as police investigations discovering the truth becomes a concern of societal importance, methods for the detection of concealed information are being studied. One of these methods, rapid serial visual presentation (RSVP), has already been validated by previous research to be resistant to countermeasures by presenting stimuli on the fringe of awareness. In the current study, we investigate the use of face stimuli in RSVP for concealed information testing with pupillometry. 53 participants were asked to indicate if they saw a specific target face after each RSVP trial. During some of the RSVP streams, a probe (the face of Obama). The aim of our study was to find out whether there would be an increase in pupil size when Obama’s face was shown, indicating an automatic response elicited by subliminal salience. We found significant differences in pupil sizes between the familiar target stimuli and irrelevant stimuli but no significant pupil size increase when Obama’s face was shown. While pupillometry seems to be a valid instrument to measure familiarity with a stimulus, further research is needed to validate it as a useful instrument for the detection of subliminally salient stimuli.
| Item Type: | Thesis (Bachelor) |
|---|---|
| Supervisor name: | Mijn, W.R. van der |
| Degree programme: | Psychology |
| Differentiation route: | None [Bachelor Psychology] |
| Date Deposited: | 01 Aug 2022 06:47 |
| Last Modified: | 01 Aug 2022 06:47 |
| URI: | http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/1218 |
Actions (login required)
 |
View Item |