“…Some investigators consider changes in family interaction patterns to signify therapeutic effectiveness Carkhuff & Bierman, 1970). Others investigate such effects as avoidance of inpatient status (Langsley, Machotka, & Flomenhaft, 1971;Rittenhouse, 1970), abstinence from alcohol (Meeks & Kelly, 1970), or drugs (Hendricks, 1971), or some other behavioral outcome. Clients' self-ratings of improvement (for example, Burton & Kaplan, 1968) are also used as criteria of success.…”