Bosch, Charlotte, V. (2023) Using Pupillometry in a RSVP Task Can Detect Concealed-Information. Bachelor thesis, Psychology.
|
Text
concealed-information_testing using_neurophysiology_C.Bosch_s3589889.pdf Download (1MB) | Preview |
Abstract
The Concealed Information Test presents examinee’s with a series of items that are relevant and irrelevant to a crime, to investigate whether this person is in possession of incriminating knowledge. This test relies on the body's physiological response to such items. However, which physiological response can be a reliable measure of concealed information has been questioned, because of the countermeasures that examinee’s might use. Rapid Serial Visual Presentation (RSVP) in combination with pupillometry has thus been explored as a paradigm to counteract those countermeasures. Previous studies have shown that pupil size can reveal concealed information using this paradigm. Since pupillometry shows to be a promising novel way, which is non-invasive and cost efficient, this study will try to replicate those findings and improve on its usability, with different measures of accuracy and different salient stimuli. In an experiment 57 university students were part of a mock crime. Participants had hidden a suitcase at a chosen place, which they were instructed to conceal. They were then given a name of a place to search for in an RSVP stream. Apart from these names control names also appeared in the stream while their pupil sizes were recorded. Our results show that mean pupil size does not reveal concealed information at group level. However, the pupil slope showed a more promising measure for concealed information at group and individual level. Further refinement of the experiment is necessary to create a more reliable test for concealed information.
| Item Type: | Thesis (Bachelor) |
|---|---|
| Supervisor name: | Mijn, W.R. van der |
| Degree programme: | Psychology |
| Differentiation route: | None [Bachelor Psychology] |
| Date Deposited: | 02 May 2023 12:39 |
| Last Modified: | 02 May 2023 12:39 |
| URI: | http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/1927 |
Actions (login required)
 |
View Item |