Fig 1. Category probability curves.
Category probability curves for item TM4 with response options: To a very small extent, to a small extent, somewhat, to a large extent, to a very large extent.
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.