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The Gender Preoccupation and Stability Questionnaire (GPSQ) is a 14-item measure used to assess the effectiveness of medical, surgical, social, and psychological interventions in trans and gender diverse adults who experience gender dysphoria. One major limitation of the GPSQ is that it was not developed for use with adolescents. This study aims to validate a revised version of the GPSQ, the Gender Preoccupation and Stability Questionnaire-2 nd Edition (GPSQ-2) with the aim of adapting the measure to be applicable to individuals aged 13 and above. This research was conducted in three stages: 1) development of the GPSQ-2 to address previously identified issues with validity and comprehensibility of the GPSQ and to increase the applicability of the measure to adolescents; 2) pilot testing, using a purposive sample and semi-structured interviews, to assess the relevance, comprehensibility, and comprehensiveness of the GPSQ-2; and 3) validation using a community sample to assess the psychometric properties of the GPSQ-2. The pilot study was conducted with seven participants ( M age  = 28.43, SD  = 15.50; age range: 13-59). The GPSQ-2 was found to be easy to understand, relevant to individuals who experienced gender dysphoria, and that it did not have any identifiable omissions. The validation study was conducted with 141 participants ( M age  = 36.44; SD  = 14.76; age range 14-73). The GPSQ-2 was found to be a reliable and valid 14-item scale with two factors: preoccupation and stability. The GPSQ-2 is a structurally sound measure of gender dysphoria that can be used in populations aged 13 and above.

Background: The NOURISHED study: Nice OUtcomes for Referrals with Impulsivity, Self Harm and Eating Disorders.Eating Disorders (ED) and Borderline Personality Disorder (BPD) are both difficult to treat and the combination presents particular challenges. Both are associated with vulnerability to loss of mentalization (awareness of one's own and others' emotional state). In BPD, Mentalization Based therapy (MBT) has been found effective in reducing symptoms. In this trial we investigate the effectiveness and cost-effectiveness of MBT adapted for Eating disorders (Mentalization Based Therapy for Eating Disorders (MBT-ED)) compared to a standard comparison treatment, Specialist Supportive Clinical Management (SSCM-ED) in patients with a combination of an Eating Disorder and either a diagnosis of BPD or a history of self-harm and impulsivity in the previous 12 months., Methods/design: We will complete a multi-site single-blind randomized controlled trial (RCT) of MBT-ED vs SSCM-ED. Participants will be recruited from three Eating Disorder Services and two Borderline Personality Disorder Services in London. Participants allocated to MBT-ED will receive one year of weekly group and individual therapy and participants allocated to SSCM-ED will receive 20 sessions of individual therapy over 1 year. In addition, participants in both groups will have access to up to 5 hours of dietetic advice. The primary outcome measure is the global score on the Eating Disorders Examination. Secondary outcome measures include total score on the Zanarini BPD scale, the Object Relations Inventory, the Depression Anxiety Stress Scales, quality of life and cost-effectiveness. Measures are taken at recruitment and at 6 month intervals up to 18 months., Discussion: This is the first Randomised Controlled Trial of MBT-ED in patients with eating disorders and symptoms of BPD and will provide evidence to inform therapy decisions in this group of patients. During MBT-ED mentalization is encouraged, while in SSCM-ED it is not overtly addressed. This study will help elucidate mechanisms of change in the two therapies and analysis of therapy and interview transcripts will provide qualitative information about the conduct of therapy and changes in mentalization and object relations., Trial Registration: ISRCTN51304415.