Dialexis was founded in 2008 by Wies van den Bosch. In 2019, she handed over the management to Roland Sinnaeve, Hanneke van Leeuwen, and Ursula Witteveen.
Dialexis trains professionals in DBT and provides guidance to teams and therapists. In addition, Dialexis assists in setting up and implementing a DBT program. The training courses are continuously adapted to current scientific research, the needs of mental health care, international guidelines of the WDBTA and Behavioral Tech, and the needs of different target groups.
For supervision, we refer to our recognized supervisors, who can be found on this website. Dialexis is currently still involved in the organization of expert checks and the certification of individual therapists, trainers, and teams. In time, this will be transferred to the Association for DBT.
Dialexis trains according to the WDBTA. These guidelines can be found here.
Dialexis is affiliated to Behavioral Tech, the Linehan Institute Training Company.
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In addition, Dialexis is acknowlegded for it’s short-term vocational training by the CRKBO.



