Inventory of Interpersonal Problems-32 (IIP-32) to be administered one week pre-, one week post- and three months post-intervention. The scale measures difficulties with interpersonal relationships which are a core feature of personality disorder psychopathology.

There are 32 items scored on a 5 point scale (0-4) measuring 2 domains of affiliating and distancing (16 items each) difficulties with interpersonal relationships. There are 8 differing interpersonal relationship styles (4 each for affiliating and distancing). The maximum score therefore for each style is 16 (4 x 4 point scores), for each domain is 64 (16 x 4 point scores), and total score is 128 (32 x 4 point scores). The minimum score is 0. Higher values indicate increasing severity.

Barrett Impulsiveness Scale (BIS) to be administered one week pre-, one week post- and three months post-intervention. The scale measures difficulties with impulsivity which is a core feature of personality disorder psychopathology.

There are 30 items scored on a 4 point (1-4) scale measuring impulsivity. The maximum score is 120 (30 x 4 point scores). The minimum score is 30 (30 x 1 point scores). Higher values indicate increasing severity.

Barrett Impulsiveness Scale (BIS) to be administered one week pre-, one week post- and three months post-intervention. The scale measures difficulties with impulsivity which is a core feature of personality disorder psychopathology.

There are 30 items scored on a 4 point (1-4) scale measuring impulsivity. The maximum score is 120 (30 x 4 point scores). The minimum score is 30 (30 x 1 point scores). Higher values indicate increasing severity.

Reflective Functioning Questionnaire (RFQ) to be administered one week pre-, one week post- and three months post-intervention. The scale measures difficulties with reflective functioning which is a core feature of personality disorder psychopathology.

There are 54 items scored on a 7 point (1-7) scale measuring 2 domains of certainty and uncertainty (26 items each) difficulties with reflective functioning. Two items do not score. Only extreme rankings score points for each item (i.e 7 or 1 scores 3, 6 or 2 scores 2 and 5 or 3 scores 1 depending on the item type). The maximum score therefore for each domain is 78 (26 x 3 point scores), and total score is 156 (52 x 3 point scores). The minimum score is 0. Higher values indicate increasing severity.

Reflective Functioning Questionnaire (RFQ) to be administered one week pre-, one week post- and three months post-intervention. The scale measures difficulties with reflective functioning which is a core feature of personality disorder psychopathology.

There are 54 items scored on a 7 point (1-7) scale measuring 2 domains of certainty and uncertainty (26 items each) difficulties with reflective functioning. Two items do not score. Only extreme rankings score points for each item (i.e 7 or 1 scores 3, 6 or 2 scores 2 and 5 or 3 scores 1 depending on the item type). The maximum score therefore for each domain is 78 (26 x 3 point scores), and total score is 156 (52 x 3 point scores). The minimum score is 0. Higher values indicate increasing severity.

Beck's Depression Inventory (BDI) to be administered one week pre-, one week post- and three months post-intervention. The scale measures depressive symptoms which are a common feature of personality disorder psychopathology.

There are 21 items scored on a 4 point (0-3) scale measuring depressive symptoms. The maximum score is 63 (21 x 3 point scores). The minimum score is 0. Higher values indicate increasing severity (1-10 - these ups and downs are considered normal; 11-16 - mild mood disturbance; 17-20 - borderline clinical depression; 21-30 - moderate depression; 31-40 - severe depression; >40 - extreme depression).

Beck's Depression Inventory (BDI) to be administered one week pre-, one week post- and three months post-intervention. The scale measures depressive symptoms which are a common feature of personality disorder psychopathology.

There are 21 items scored on a 4 point (0-3) scale measuring depressive symptoms. The maximum score is 63 (21 x 3 point scores). The minimum score is 0. Higher values indicate increasing severity (1-10 - these ups and downs are considered normal; 11-16 - mild mood disturbance; 17-20 - borderline clinical depression; 21-30 - moderate depression; 31-40 - severe depression; >40 - extreme depression).

Beck's Anxiety Inventory (BAI) to be administered one week pre-, one week post- and three months post-intervention. The scale measures anxiety symptoms which are a common feature of personality disorder psychopathology.

There are 21 items scored on a 4 point (0-3) scale measuring anxiety symptoms. The maximum score is 63 (21 x 3 point scores). The minimum score is 0. Higher values indicate increasing severity (0-21 - low anxiety; 22-35 - moderate anxiety; >35 - potentially concerning levels of anxiety).

Beck's Anxiety Inventory (BAI) to be administered one week pre-, one week post- and three months post-intervention. The scale measures anxiety symptoms which are a common feature of personality disorder psychopathology.

There are 21 items scored on a 4 point (0-3) scale measuring anxiety symptoms. The maximum score is 63 (21 x 3 point scores). The minimum score is 0. Higher values indicate increasing severity (0-21 - low anxiety; 22-35 - moderate anxiety; >35 - potentially concerning levels of anxiety).

Social Adjustment Scale - Self Report (SAS-SR) to be administered one week pre-, one week post- and three months post-intervention. The scale measures difficulties with social functioning and satisfaction which are common sequelae of personality disorder.

There are 54 items scored measuring instrumental and expressive performance over the past two weeks. They examine across 6 domains - work, social and leisure, extended family, primary relationship, parental, family unit. Within these domains, the items cover 4 categories - performance, friction with people, finer aspects of interpersonal relations, and feelings and satisfactions.

Social Adjustment Scale - Self Report (SAS-SR) to be administered one week pre-, one week post- and three months post-intervention. The scale measures difficulties with social functioning and satisfaction which are common sequelae of personality disorder.

There are 54 items scored measuring instrumental and expressive performance over the past two weeks. They examine across 6 domains - work, social and leisure, extended family, primary relationship, parental, family unit. Within these domains, the items cover 4 categories - performance, friction with people, finer aspects of interpersonal relations, and feelings and satisfactions.

Clinical Outcomes in Routine Evaluation - Outcome Measure (CORE-OM) to be administered one week pre-, one week post- and three months post-intervention. The scale measures overall change in symptoms and functioning from baseline following completion of the intervention.

There are 34 items scored on a 5 point (0-4) scale measuring overall change across 4 domains - subjective well-being (4 items), problems and symptoms (12 items), life functioning (12 items), and risk and harm (6 items). The maximum score is 136 (34 x 4 point scores). The minimum score is 0. Higher values indicate increasing severity.

Clinical Outcomes in Routine Evaluation - Outcome Measure (CORE-OM) to be administered one week pre-, one week post- and three months post-intervention. The scale measures overall change in symptoms and functioning from baseline following completion of the intervention.

There are 34 items scored on a 5 point (0-4) scale measuring overall change across 4 domains - subjective well-being (4 items), problems and symptoms (12 items), life functioning (12 items), and risk and harm (6 items). The maximum score is 136 (34 x 4 point scores). The minimum score is 0. Higher values indicate increasing severity.

The number of discipline procedures (reports) and Incentives and Enhanced Privileges (IEPs) will be examined over a three month period pre-intervention, three month period during the intervention and three month period post-intervention. This allows a behavioural proxy measure of negative (reports) vs. positive (IEPs) behaviours.

The number of discipline procedures (reports) and Incentives and Enhanced Privileges (IEPs) will be examined over a three month period pre-intervention, three month period during the intervention and three month period post-intervention. This allows a behavioural proxy measure of negative (reports) vs. positive (IEPs) behaviours.

Semi-structured interview schedule to be completed one week post- and three months post- intervention. This will examine participant's understanding of the concepts of the intervention, in addition to their overall satisfaction.