Is Less More? Dosing and Sequencing Effect

In the present study, participants will be randomly assigned to one of four groups, receiving one or both treatment components under investigation, all over the course of six sessions of treatment.

1. It is hypothesized that both component A (Cognitive Restructuring) and component B (External Attention Allocation) will be efficient in reducing symptoms of depression and anxiety when delivered separately, both when delivered over 3 and 6 sessions. The difference between components as well as between the number of sessions on primary and secondary outcomes will be explored. 2. The combinatory effects, comparing the effect of receiving Component A subsequent to Component B and vice versa will be explored. 3. The process of change in both components will be explored. 4. Group differences in participants' experience of being the recipient of the components (either individually or combination) both qualitatively (free descriptions of their experience with using them) and quantitatively (questionnaires concerning the understanding and employment) will be explored. 5. The moderating effect of baseline characteristics including baseline symptomatology, diagnoses, personality functioning, and working alliance will be explored. 6. Potential harmful effects will be explored in each group.

• Depressive symptoms [Срок оценки: Change from pre treatment (just prior to session 1) through follow-up (6 months after treatment has ended), app. 33 weeks in total.]
• Anxiety symptoms [Срок оценки: Change from pre treatment (just prior to session 1) through follow-up (6 months after treatment has ended), app. 33 weeks in total.]
• Symptoms of generalized anxiety disorder [Срок оценки: Changes from pre (just prior to session 1) to post treatment (just after session 6) and through follow-up (6 months after treatment has ended) only for those individuals that scores above cut-off during the screening process, app. 33 weeks in total.]
• Symptoms of panic disorder [Срок оценки: Changes from pre (just prior to session 1) to post treatment (just after session 6) and through follow-up (6 months after treatment has ended) only for those individuals that scores above cut-off during the screening process, app. 33 weeks in total.]
• Symptoms of social anxiety disorder [Срок оценки: Changes from pre (just prior to session 1) to post treatment (just after session 6) and through follow-up (6 months after treatment has ended) only for those individuals that scores above cut-off during the screening process, app. 33 weeks in total.]
• Worry [Срок оценки: Changes from pre (just prior to session 1) to post treatment (just after session 6) and through follow-up (6 months after treatment ended), app. 33 weeks in total.]
• Decentering [Срок оценки: Changes from pre (just prior to session 1) to post treatment (just after session 6) and through follow-up (6 months after treatment ended), app. 33 weeks in total.]
• Cognitive change [Срок оценки: Changes from pre (just prior to session 1) to post treatment (just after session 6) and through follow-up (6 months after treatment ended), app. 33 weeks in total.]
• Cognitive reappraisal [Срок оценки: Changes from pre (just prior to session 1) to post treatment (just after session 6) and through follow-up (6 months after treatment ended), app. 33 weeks in total.]
• Mindfulness [Срок оценки: Changes from pre (just prior to session 1) to post treatment (just after session 6) and through follow-up (6 months after treatment ended), app. 33 weeks in total.]
• Attention control [Срок оценки: Changes from pre (just prior to session 1) to post treatment (just after session 6) and through follow-up (6 months after treatment ended), app. 33 weeks in total.]
• Valued Living [Срок оценки: Changes from pre (just prior to session 1) to post treatment (just after session 6) and through follow-up (6 months after treatment ended), app. 33 weeks in total.]