Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Departures of hit rate from the values predicted by the regressions are plotted for each of the four treatment levels, each shape providing a plot-point for each of the treatments. The relatively consistent balance of the clusters around zero suggests that there are no systematic nonlinear trends in the data.
