Sophie Merrild Juul defends her PhD thesis

Sophie Merrild JuulTitle

‘Which length for whom? A systematic review, meta-analysis, and a randomized clinical trial of short-term versus long-term psychotherapy for adult psychiatric disorders’.

Time and place

Tuesday, 20 April, 2021 at 13.00 CET.

Sophie Merrild Juul defends her PhD thesis at Stolpegaard Psychotherapy Centre, Stolpegårdsvej 20, 2820 Gentofte. 

Due to covid-19, there will be a limited number of physical seats for reserved guests. All invited guests must have a negative covid-19 test 72 hours prior to the defence and must wear a mask.

To attend the virtual PhD defence, please follow the link: Teams Link: Sophie Juul ph.d.-forsvar

Remember to turn off microphone and camera.

Please note that the defence will begin precisely at the announced time.

Assessment committee

  • Associate professor Karen-Inge Karstoft, University of Copenhagen, Denmark (chair)

  • Professor Lars Mehlum, University of Oslo, Norway

  • Associate professor Elfrida Kvarstein, University of Oslo, Norway


  • Associate professor Susanne Lunn, University of Copenhagen, Denmark

  • Professor Stig Poulsen, University of Copenhagen, Denmark

  • Senior researcher Sebastian Simonsen, Stolpegaard Psychotherapy Centre, Denmark


Psychotherapy is a widely used intervention for most adult psychiatric disorders. However, the optimal duration of psychotherapy for adult psychiatric disorders has not been systematically reviewed previously. The thesis includes three projects. Project 1 is a protocol and a systematic review of randomized clinical trial assessing both beneficial and harmful effects of short-term versus long-term psychotherapy despite of theoretical orientation for all adult psychiatric disorders. Project 2 is a protocol and a detailed statistical analysis plan for an ongoing randomized clinical trial assessing the beneficial and harmful effects of short-term versus long-term mentalization-based therapy for outpatients with borderline personality disorder. Project 3 is a theoretical paper discussing clinical challenges when terminating psychotherapy with patients suffering from borderline personality disorder.