Patients undergoing psychological interventions should have some prerequisites and conditions which make them suitable for the intervention; this, however, is not fully compatible with a random allocation of participants. Through randomization there is the possibility that participants are not able to cope with their assigned treatment; therefore in a pragmatic way patients will be allowed to switch in another treatment arm. Accordingly after two weeks; patients will be reassessed; reallocation will be followed according to predefined criteria for excessive demands or under requirement.