Abstract
The negative relationship between age and pupil size has been a consistent finding in the literature, however, the effects of the related factors of range of pupillary response and level of pupillary activity have never been separated from these two factors. Using a fairly limited age range (19 to 49 yr.) and a fairly small sample (20) the relationship reported in the literature was confirmed using simple Pearson correlations. However, to separate the effects of range and activity from the relationship between age and size, partial correlations were calculated. The age-size relationship no longer was significant following this manipulation. Several other correlations were significant and were briefly discussed.
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