Volker Köllner
26PUBLICATIONS
34CO-AUTHORS

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Publications (26)
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|Jan 07, 2026
Effectiveness of and Mechanisms of Change in a Self-Help Web- and App-Based Resilience Intervention on Perceived Stress in the General Working Population: Randomized Controlled Trial.Sandy Hannibal, Dörte Behrendt, Michèle Wessa
|Nov 20, 2025
Long-term effects of psychotherapy in children and adolescents: protocol for database development and a systematic review in the LaKiJu META project.Sarah K Schäfer, Clara F Burmeister, Eva Lottermoser
|Aug 14, 2025
Positive mental states and their relation to psychosocial resources: protocol of a systematic review focusing on cultural moderators.Max Supke, Sarah K Schäfer, Jana Meier
|Jun 30, 2025
Barriers and facilitators for the implementation of preventative mental health interventions among secondary schools in high-income countries: a systematic review.Sarah K Schäfer, Sophie Streit, Christian G Schäfer
|May 09, 2025
Case Management for Enhancing Wellbeing, Resilience, and Quality of Life in Caregivers of Children and Adolescents With Chronic Illnesses and Disabilities: A Systematic Review and Meta-Analysis.Jan Broll, Sarah K Schäfer, Jutta Stoffers-Winterling
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Frequent Collaborators
6 joint publications
Tanja Michael
3 joint publications
Monika Equit
2 joint publications
Susanne Wurm
2 joint publications
Michèle Wessa
2 joint publications
Klaus Lieb
1 joint publications
A Horsch
1 joint publications
Frank R Ihmig
1 joint publications
Angela M Kunzler
1 joint publications
Erin Brown
1 joint publications
Maria-Inti Metzendorf