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.
Paul EJ, Boomer J, Smith JD, Ashby FG.Paul EJ, et al. Among authors: smith jd.Mem Cognit. 2011 Apr;39(3):536-54. doi: 10.3758/s13421-010-0041-4.Mem Cognit. 2011.PMID: 21264597Free PMC article.