Appreciation is extended to Dr. Abraham Wolf, Associates for Research in Behavior, Philadelphia, for technical assistance and advice, and to Tamara Geacintov and Inge Grosso, Bell Labs, for helpful comments.
Pupil Size, Information Overload, and Performance Differences
Version of Record online: 30 JAN 2007
Volume 11, Issue 5, pages 559–566, September 1974
How to Cite
Peavler, W. S. (1974), Pupil Size, Information Overload, and Performance Differences. Psychophysiology, 11: 559–566. doi: 10.1111/j.1469-8986.1974.tb01114.x
- Issue online: 30 JAN 2007
- Version of Record online: 30 JAN 2007
- Pupil diameter;
- Information processing;
- Information overload;
- Mental activity;
- Performance differences
As a test of the hypothesis that pupil dilation during performance is partially due to a task related anxiety component, pupillary patterns were measured while subjects (Ss) processed digit strings of various lengths for immediate recall. Information overload resulted in a leveling of the dilation pattern which suggested a momentary suspension of processing effort. In addition, significant correlations were observed between individual differences in pupil size and recall performance.