Eyes: Pupil Dilation and Sexual Orientation

Description Format Details Source


Data from an experiment relating pupil dilation to sexual orientation.


A data frame with 106 observations on the following 4 variables.


Difference in pupil dilation when looking at same-sex and opposite-sex nude photographs


F=female or M=male


1=gay or 0=not, based on Kinsey scale score greater than 3


0=female or 1=male


DilateDiff is, essentially, the difference in pupil dilation when looking at (a) same-sex nudes and (b) opposite-sex nude photographs. More specifically, multiple measurements of pupil size were taken under each of the two conditions, together with a third condition that involved a neutral stimulus. Within-subject z-scores were then computed, which led to the DilateDiff numbers used here.


G. Rieger and R.C. Savin-Williams (2012),"The Eyes Have It: Sex and Sexual Orientation Differences in Pupil Dilation Patterns," in PLoS ONE. The full study included 325 students. Here we are analyzing a subset of the data that excludes White students.

statmanrobin/Stat2Data documentation built on Jan. 6, 2019, 1:08 a.m.