Daily perceptual speed scores for a schizophrenic patient. The patient began receiving a powerful tranquilizer (chlorpromzaine) on the 61st day and continued receiving the drug for the remainder of the sample period. It is expected that this drug would reduce perceptual speed.
Source
Makridakis, Wheelwright and Hyndman (1998) Forecasting: methods and applications, John Wiley & Sons: New York. Exercise 8.8.
Examples
plot(schizo)
