“…As with many psychotherapy theories, the seminal constructs of TA have not been sufficiently validated. TA-oriented therapy has been proven to be effective (Bloom, 1978; Fetsch & Sprinkle, 1982; McNeel, 1982; Minos & McFarren, 1982; Olson et al, 1981; Payton, Morris & Beale, 1979; Sisson, Arthur & Carpenter, 1977; Steere, Tucker & Worth, 1981) but TA-oriented therapy has not been shown to be any more effective man other types of therapy (Fetsch & Sprinkle, 1982; Leamon, 1982; Olson et al, 1981; Smith, Glass & Miller, 1980). Therefore, success of TA-oriented treatment may well be due to factors common to all psychotherapy, such as client motivation or the client—therapist relationship, rather than the veracity of TA theory.…”