CORRELATION By Nugent, Pam M.S. - April 7, 2013 noun. The magnitude of a union between two traits. CORRELATION: "The correlation between internal health and external appearance is strongly than most believe." Related Psychology Terms CORRELATION COEFFICIENT TRANSPOSITION OLFACTIE CONSTITUTIONAL TYPE TRIAD UNIVERSALS CONTACT BEHAVIOR CORRELATION MATRIX TRANSITIVITY AFFILIATIVE DRIVE Cite this page: Nugent, Pam M.S., "CORRELATION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/correlation/ (accessed January 16, 2019).