“…Theory suggests that ego development, as assessed by Loevinger's Sentence Completion Test (SCT; Loevinger & Wessler, 1970), should be related to the use of defense mechanisms, and there is some support for this expectation in the research literature. The conclusions to be drawn from the existing studies, however, are hampered by inconsistent findings, the use of idiosyncratic samples, inadequate measurement reliability, lack of information regarding the external validity of the measures, and in some cases by the restricted range of ego levels represented (Bond, Gardner, Christian, & Sigal, 1983;Haan, Stroud, & Holstein, 1973;Levit, 1993). To add to the confusion, studies with older adults have generally found a lack of relation between defense maturity and ego level, in women (Helson & Wink, 1987) and in college-educated men (Vaillant & McCullough, 1987).…”