Group sessions and computer and multimedia elements of the intervention
| Week | Group session | Computer and multimedia elements |
| Preassessment | Worksheet 1 Video 1 | |
| C.1 | Opening and information about intervention and online platform; psychoeducation on depression; introduction to the current concerns concept; instruction for current concerns diary and relaxation | PPT-presentation Worksheet 2 Video 2 |
| C.2 | Discussion of homework assignments; psychoeducation on human perception and cognitive biases; discussion on frequent cognitive distortions; psychoeducation on acceptance and mindfulness principles; instruction for the “Thoughts and mindfulness” diary task | PPT-presentation Video 3 Mobile phone diary* |
| P.3 | Discussion of homework assignments; psychoeducation on human memory and learning processes; exercise on cognitive restructuring; introduction to “Happiness” diary and activity list | PPT-presentation Worksheet 3 Video 4 and 5 Mobile phone diary* |
| P/A.4 | Discussion of homework assignments; psychoeducation on psychological motivation theories and goal setting, with emphasis on Vroom’s VIE-theory (1964); group exercise on “SMART” goal setting and instruction for Goal Attainment Scaling | PPT-presentation Online Goal Attainment Scaling with feedback |
| Break | ||
| A.5 | Revision of sessions 1–4; psychoeducation on self-regulation and self-control; group exercise on strengths and weaknesses profile; discussion and refinement of individual goals; instructions for weekly diary task | PPT-presentation Contract with myself-worksheet 4 Mobile phone diary* |
| A.6 | Discussion of homework assignments; psychoeducation on time management, realistic time scheduling; group exercise “Time-thieves”; group discussion on practical aspects of time management and prioritisation; introduction to specific time management methods; group exercise “Stress traffic light” | PPT-presentation Worksheet 5+ Video 5 Mobile phone diary* |
| M.7 | Revision of sessions 5–7; psychoeducation on slow and problematic change patterns and handling of setbacks; group discussion on problematic change and relapse prevention | PPT-presentation |
| Postassessment |
*Mobile phone diary, participants were free to choose between a mobile phone diary or a handwritten diary.
Letters C to M, treatment stages (C, contemplation, P, preparation, A, action, M, maintenance); PPT-presentation, in-session PowerPoint presentation; VIE, Expectancy Instrumentality Valence - Theory.