Pupil diameter serves as an indicator of our bodily arousal and is usually applied to determine mental workload or affective reactions. An increase in physiologic activation is accompanied by an enlargement of pupil diameter, whereas low autonomic arousal correlates with small pupil sizes. Biofeedback scenarios externalize these activation patterns (e.g. via real-time feedback on a computer screen) and enable participants to voluntary control the associated dynamics.
The current project pursues two objectives. Firstly, determining to what extent evaluators (project members) are able to differentiate between true and false statements on basis of real-time pupillary feedback of a participant. And, secondly, whether participants are able to voluntary control their pupil dynamics and thereby mask the truthfulness of their statements.
The project promises insights into the methods of eye-tracking and pupillometry. In addition, basics of empirical designs are provided. Programming work has almost been done; however, particular aspects still need to be implemented. A draft of the experimental design has been worked out but can be modified according to ideas and suggestions of the project members. |