One instrument measured interpersonal functioning: the Inventory of Interpersonal Problems (IIP) (64 items) [ 21], a five-point scale ranging from 0 = 'no problem' to 4 = 'severe problems'.
We expect both MBT-DH and TAU to lead to significant reductions in primary and secondary outcome measures, including symptomatic distress and interpersonal functioning.
The GAF is a valid scale of global psychopathology and the SOFAS is a valid measure of social, occupational and interpersonal functioning [ 47].
We collect data on potential outcome mediators throughout the treatment and follow-up using questionnaires to measure interpersonal, emotional, and psychosocial functioning, strength of therapeutic alliance, use of skills taught in treatment and expectancy (table 1).
Secondary outcome measures were psychological ratings of depressive symptoms, anxiety, generalised stress, specific infertility stress and interpersonal functioning assessed through self-reported questionnaires.
The adolescent described above has severe problems in self and interpersonal functioning.
Impairment resulting from depression symptoms was measured using the additional question item on the PHQ-9 (not one of the nine) which asks participants responding positively to any of the 9 question items on the PHQ-9 how difficult these symptoms have made their social, vocational and interpersonal functioning.
These two new factors showed differential relationships with other measures of interpersonal functioning (Inventory of Interpersonal Problems) and attachment (Relationship Questionnaire), and both factors were sensitive to improvement over the course of intensive inpatient treatment.
Infants of depressed mothers also show poorer infant development as assessed using standardized measures, poorer interpersonal functioning, insecure attachment and elevated rates of emotional and behavioural problems [ 16, 18– 20].
To the best of our knowledge, this is the first study to link nonverbal expressive behaviour in patients with SSD with other measures of interpersonal functioning and neurocognitive (social and non-social) performance.
