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.
Data from the PIT tests of Experiment 2 for the groups trained with 20-s and 120-s CS-US intervals. Mean instrumental responding is shown for both 20-s and 120-s tests during pre stimulus periods and during the stimuli when the stimulus and response were reinforced previously with the same or different US.
