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.
Numeric Change in the subject's pupil size.
Factor Subject's gender (female, male)
Factor Picture shown to subject (infant, landscape, nude female, nude male)