These data are from an experiment that aimed to model the effects of the tinting of car windows on visual performance. The authors were mainly interested in effects on side window vision, and hence in visual recognition tasks that would be performed when looking through side windows.
This data frame contains the following columns:
case
observation number
id
subject identifier code (1-26)
age
age (in years)
sex
a factor with levels f female, m male
tint
an ordered factor with levels representing degree of tinting: no < lo < hi
target
a factor with levels locon: low contrast, hicon: high contrast
it
the inspection time, the time required to perform a simple discrimination task (in milliseconds)
csoa
critical stimulus onset asynchrony, the time to recognize an alphanumeric target (in milliseconds)
agegp
a factor with levels younger, 21-27, older, 70-78
Details
Visual light transmittance (VLT) levels were 100% (tint=none), 81.3% (tint=lo), and 35.1% (tint=hi). Based on these and other data, Burns et al. argue that road safety may be compromised if the front side windows of cars are tinted to 35
Source
Burns, N.R., Nettlebeck, T., White, M. and Willson, J., 1999. Effects of car window tinting on visual performance: a comparison of younger and older drivers. Ergonomics 42: 428-443.
Use the following R code to directly access this dataset in R.
