Flicker: Critical Flicker Frequency (CFF) and Eye Color
Description
There is various flickering light in our environment; for
instance, light from computer screens and fluorescent
bulbs. If the frequency of the flicker is below a certain
threshold, the flicker can be detected by the eye.
Different people have slightly different flicker
"threshold" frequencies (known as the "critical flicker
frequency," or CFF). Knowing the critical threshold
frequency below which flicker is detected can be
important for product manufacturing as well as tests for
ocular disease. Do people with different eye color have
different threshold flicker sensitivity? A 1973 study
("The effect of iris color on critical flicker
frequency," Journal of General Psychology [1973], 91-95)
obtained the following data from a random sample of
subjects.format
A data frame with 19 observations on the following variables.
{eye color: Brown
, Green
, or Blue
}
cff
{critical flicker frequency}References
Part of the Carnegie Mellon University Online Learning
Initiative datasets.