Memories of early attachment: the use of PBI as a predictor of outcome in Pesso-Boyden System Psychomotor (PBSP) group therapy, Cognitive-Behavioural Group Therapy (CBGT), Individual Cognitive-Behavioural Therapy (CBT) and Individual Treatment As Usual (TAU) with adult out-patients.
OBJECTIVE
To examine the predictive validity of the Parental Bonding Instrument (PBI) for outcome in individual and group psychotherapy.


METHODS
Data from four different clinical trials were combined, yielding a total of 105 patients. After controlling for gender, age and initial symptomatic distress, the predictive validity of the PBI subscales was investigated using the symptom checklist-90-revised (SCL-90-R) and inventory of interpersonal problems-64 (IIP-64) at termination as dependent measures in each treatment condition using separate hierarchical multiple regression analyses.


RESULTS
Using the SCL-90-R at termination as dependent measure, reports of higher paternal and maternal care were related to a worse outcome in the Pesso-Boyden System Psychomotor condition, whereas reports of higher paternal care were related to a better outcome in the Cognitive-Behavioural Therapy condition. Also, higher maternal protection was related to a better outcome in the Cognitive-Behavioral Group condition. Using the IIP-64 at termination as dependent measure, reports of higher paternal protection were related to a better outcome in the Treatment As Usual condition.


CONCLUSIONS
The study shows that the PBI may function as a clinical predictor for treatment response, although the results were somewhat contrary to previous reportings. Future studies should contrast and investigate possible differences between individual and group treatments further, as well as more clearly defined diagnostic groups. Clinical implications are presented.
Ryum
Truls
T
Department of Psychology, Norwegian University of Science and Technology, Trondheim, Norway. truls.ryum@svt.ntnu.no
Vogel
Patrick A
PA
Hagen
Roger
R
Stiles
Tore C
TC
D000328:Adult; D000553:Ambulatory Care; D001008:Anxiety Disorders / Q000175:diagnosis / Q000523:psychology / Q000628:therapy*; D002986:Clinical Trials as Topic; D015928:Cognitive Behavioral Therapy / Q000379:methods*; D003866:Depressive Disorder / Q000175:diagnosis / Q000523:psychology / Q000628:therapy*; D005219:Father-Child Relations; D005260:Female; D006801:Humans; D008297:Male; D011939:Mental Recall; D008875:Middle Aged; D009034:Mother-Child Relations; D009769:Object Attachment; D016487:Parenting / Q000523:psychology; D010554:Personality Disorders / Q000175:diagnosis / Q000523:psychology / Q000628:therapy*; D010555:Personality Inventory / Q000706:statistics & numerical data*; D011379:Prognosis; D011613:Psychotherapy / Q000379:methods*; D011615:Psychotherapy, Group / Q000379:methods*; D016896:Treatment Outcome; D055815:Young Adult