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.
From left to right: (a) Measuring happiness in the app using the affect grid: users select a point on a grid that quantifies valence (horizontally) and arousal (vertically). (b) Measuring happiness with PA/NA adjectives.
