the fact that a viewed correspondence between two variants might be because of the typical correspondence between each of the variants and a third variant rather than because the two variants have any underlying union with one another.

THIRD-VARIABLE PROBLEM: "It would seem you encounter a third-variable problem in you second trial."
Cite this page: N., Pam M.S., "THIRD-VARIABLE PROBLEM," in, April 29, 2013, (accessed September 20, 2021).