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.
Plots of ordered 30-s engagement segments (x-axis) for participants (y-axis), stratified by sequence cluster. “Disengaged” (gray segments) indicate time when participants were no longer actively engaged with WebQuit (i.e., they had stopped logging into the website).
