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.
Frequencies of nonremovable, removable, and borderline nonremovable interactions reported in the 2008 issue of Psychology and Aging. The left panel contains the interactions for which post hoc tests allowed a definite classification. The right panel contains the interactions for which post hoc tests were not reported and classification had to be based on visual inspection instead
