Ecological brief psychotherapy has been practised at the Psychiatric Outpat
ient Clinic at the University Hospital Zurich since 1990. The aim is to use
the development-oriented challenges posed by important others in the thera
peutic process. The effective ness of this form of therapy is investigated
by reviewing the outcome of 28 completed treatment cases. While results at
completion of therapy come up to the expectations, the long-term results we
re surprisingly positive. 96,4% of those surveyed reported they felt consid
erably better at final assessment 1 to 6 years after the therapy than they
did at the beginning. Positive changes continued after the completion of th
erapy. We presume that our coevolutive focus brought resolution of blocked
developmental steps in relationships that further stimulated changes that c
ontinued after the conclusion of therapy, even without further therapeutic
support. Furthermore, the treatment effects provided by ecological brief ps
ychotherapy apply to personality disorders as well.