“…The sum of the absolute number of degrees deviation from true vertical for the eight trials was used as the score. Odd-even reliabilities of .89 or greater on the RFT have been reported (Gardner, Jackson, & Messick, 1960;Witkin et al, 19S4) as well as test-retest reliabilities of .84 or greater for time intervals extending through 3 years (Adevai & McGough, 1968;Bauman, 1951). A smaller RFT score is considered indicative of greater psychological differentiation.…”