An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Lupyan G, Ward EJ.Lupyan G, et al.Proc Natl Acad Sci U S A. 2013 Aug 27;110(35):14196-201. doi: 10.1073/pnas.1303312110. Epub 2013 Aug 12.Proc Natl Acad Sci U S A. 2013.PMID: 23940323Free PMC article.