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.
The percentage of trials in which a lever press occurred during the autoshaping procedure. Compared to adults, adolescents exhibited an increase in sign-tracking as evidenced by significantly higher percentage of trials with a lever press. There were no group differences when training resumed after the adolescent group had reached adulthood. Data are means ± SEM.
