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.
SCR in the acquisition phase. Significantly higher mean SCR to unreinforced CS+ compared to CS− in the first and second, but not third, fear acquisition (Acq) run. Asterisks indicate significant difference. Error bars represent standard error.
