Fig. 12.
Summary of the results for six questions related to the TDS–PWC navigation, which were asked from subjects at the end of each session.
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.