Data from an experiment to measure the effect of different images on emotional arousal, by measuring changes in pupil diameter. The experiment used 20 males and 20 females. Images included a nude man, nude woman, infant, and a landscape.
A data frame with 160 observations on 3 variables.
| [,1] | arousal | numeric | Change in the subject's pupil size |
| [,2] | gender | factor | Subject's gender (female, male) |