Research output per year
Research output per year
Personal profile
Personal information
Mathias Harrer is an assistant professor of clinical psychology at Vrije Universiteit Amsterdam, Faculty of Behavioural and Movement Sciences.
Mathias' work focuses on using technology and biostatistical methods to improve psychological interventions for mental disorders. His research interests include predictive modeling, digital interventions, meta-epidemiological research, evidence synthesis methods, and statistical software development.
Mathias is the developer and maintainer of the Metapsy infrastructure, embedded in the WHO Collaborating Centre for Research and Dissemination of Psychological Interventions. Metapsy is a comprehensive system of living open databases and tailored software that allows for rapid evidence generation in psychological treatment research across all major mental disorders.
He is also coordinator of the Meta-Analytic Psychotherapy and Evidence Synthesis (META-SYN) Group within the German Society for Psychology (meta-syn.de).
Mathias is the maintainer of the {dmetar}, {metapsyTools} and {metapsyData} packages in R, as well as the TUM EBMPP Trial Warehouse.
- Personal Website: mharrer.dev
Ancillary activities
No ancillary activities
Ancillary activities are updated daily
Fingerprint
Dive into the research topics where Mathias Harrer is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
- 1 Similar Profiles
Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
-
Effectiveness of Psychotherapy: Synthesis of a “Meta-Analytic Research Domain” Across World Regions and 12 Mental Health Problems
Harrer, M., Miguel, C., van Ballegooijen, W., Ciharova, M., Plessen, C. Y., Kuper, P., Sprenger, A. A., Buntrock, C., Papola, D., Cristea, I. A., de Ponti, N., Bašić, Đ., Pauley, D., Driessen, E., Quero, S., Grimaldos, J., Buendía, S. F., Botella, C., Hamblen, J. L. & Schnurr, P. P. & 15 others, , May 2025, In: Psychological bulletin. 151, 5, p. 600-667 68 p.Research output: Contribution to Journal › Article › Academic › peer-review
Open AccessFile7 Downloads (Pure) -
Psychological interventions to prevent the onset of major depression in adults: a systematic review and individual participant data meta-analysis
IPD-PrevDep Consortium, Dec 2024, In: The Lancet Psychiatry. 11, 12, p. 990-1001 12 p.Research output: Contribution to Journal › Article › Academic › peer-review
Open Access -
Assessing the strength of innovations in the treatment of depression
Cuijpers, P., Harrer, M. & Furukawa, T., Nov 2025, In: British Journal of Psychiatry. 227, 5, p. 810-813 4 p.Research output: Contribution to Journal › Article › Academic › peer-review
Open Access -
Efficacy of pharmacogenetic (PGx)-guided antidepressant treatment on functional outcomes and quality of life in adults with anxiety and affective disorders: A systematic review and meta-analysis
on behalf of the PSY-PGx Consortium, Nov 2025, In: European Neuropsychopharmacology. 100, p. 13-23 11 p.Research output: Contribution to Journal › Review article › Academic › peer-review
Open Access -
The Prevalence of Insomnia Disorder in the General Population: A Meta-Analysis
van Straten, A., Weinreich, K. J., Fábián, B., Reesen, J., Grigori, S., Luik, A. I., Harrer, M. & Lancee, J., Oct 2025, In: Journal of Sleep Research. 34, 5, p. 1-13 13 p., e70089.Research output: Contribution to Journal › Review article › Academic › peer-review
Open Access
Datasets
-
{metapsyTools}: Several R Helper Functions for the "Metapsy" Database
Harrer, M. (Creator), Kuper, P. (Contributor), Sprenger, A. A. (Contributor) & Cuijpers, P. (Contributor), Zenodo, 2022
DOI: 10.5281/zenodo.6566632, http://tools.metapsy.org
Dataset / Software: Software
-
Supplementary Material for: Efficacy and Moderators of Internet-Based Interventions in Adults with Subthreshold Depression: An Individual Participant Data Meta-Analysis of Randomized Controlled Trials
Reins, J. A. (Contributor), Buntrock, C. (Contributor), Zimmermann, J. (Contributor), Grund, S. (Contributor), Harrer, M. (Contributor), Lehr, D. (Contributor), Baumeister, H. (Contributor), Weisel, K. (Contributor), Domhardt, M. (Contributor), Imamura, K. (Contributor), Kawakami, N. (Contributor), Spek, V. (Contributor), Nobis, S. (Contributor), Snoek, F. (Contributor), Cuijpers, P. (Contributor), Klein, J. P. (Contributor), Moritz, S. (Contributor) & Ebert, D. D. (Contributor), Unknown, 1 Jan 2020
DOI: 10.6084/m9.figshare.12489749.v1, https://karger.figshare.com/articles/Supplementary_Material_for_Efficacy_and_Moderators_of_Internet-Based_Interventions_in_Adults_with_Subthreshold_Depression_An_Individual_Participant_Data_Meta-Analysis_of_Randomized_Controlled_Trials/12489749/1
Dataset / Software: Dataset
-
{dmetar}: Companion Package for the Guide "Doing Meta-Analysis in R"
Harrer, M. (Creator), Cuijpers, P. (Contributor), Furukawa, T. A. (Contributor) & Ebert, D. D. (Other), GitHub, 2019
Dataset / Software: Software
-
metapsyData: R Package to Access the Metapsy Databases
Harrer, M. (Creator), Ebert, D. (Creator), Karyotaki, E. (Creator) & Cuijpers, P. (Creator), Zenodo, 2022
DOI: 10.5281/zenodo.5171880, https://zenodo.org/record/5171880
Dataset / Software: Dataset
-
Supplementary Material for: Efficacy and Moderators of Internet-Based Interventions in Adults with Subthreshold Depression: An Individual Participant Data Meta-Analysis of Randomized Controlled Trials
Reins, J. A. (Creator), Buntrock, C. (Creator), Zimmermann, J. (Creator), Grund, S. (Creator), Harrer, M. (Creator), Lehr, D. (Creator), Baumeister, H. (Creator), Weisel, K. (Creator), Domhardt, M. (Creator), Imamura, K. (Creator), Kawakami, N. (Creator), Spek, V. (Creator), Nobis, S. (Creator), Snoek, F. (Creator), Cuijpers, P. (Creator), Klein, J. P. (Creator), Moritz, S. (Creator) & Ebert, D. D. (Creator), Karger Publishers, 2020
DOI: 10.6084/m9.figshare.12489749, https://karger.figshare.com/articles/Supplementary_Material_for_Efficacy_and_Moderators_of_Internet-Based_Interventions_in_Adults_with_Subthreshold_Depression_An_Individual_Participant_Data_Meta-Analysis_of_Randomized_Controlled_Trials/12489749
Dataset / Software: Dataset