noun. 1. with regard to conditioning, the likelihood of occurrence of one of at least two consecutively accessible reactions, generally described as either a relative frequency or a ratio. 2. more typically, the action of selecting one option over other(s).

PREFERENCE: "It is obvious that a preference for the color blue was present from the beginning."
Cite this page: Nugent, Pam M.S., "PREFERENCE," in, April 7, 2013, (accessed June 28, 2017).