“…Farr & Smith, 1970;Johns, 1978;Preston, 1964). This issue of the passage dependency of items is of paramount importance (Allington, Chodos, Domaracki, & Truex, 1977;Pyrczak, 1972Pyrczak, , 1974Pyrczak, , 1975Pyrczak, , 1975Pyrczak, -76, 1976Pyrczak & Axelrod, 1976;Tuinman, 1972Tuinman, -73, 1973Weaver, Bickley, & Ford, 1969).…”