Personal profile
Personal information
My research focuses on meaning-making in stressful situations, particularly climate change and coping with cancer.
Climate Psychology
I study how climate change affects mental health. What eco-emotions do people experience? How are these emotions associated with cognitions, meaning-making and climate (un)friendly behaviors? How does climate change affect the client population in mental health care? And what treatments are available for individuals with climate-related mental health problems?
Psychosocial Oncology
In the Rhythms of Relating project, we investigate how interpersonal emotion regulation plays a role in emotional sharing, especially when partners in a romantic relationship talk about personal problems. We examine how different types of emotional sharing are related to personality characteristics, dyadic coping and relationship quality. In addition, we study interpersonal emotion regulation in the context of dyadic coping with cancer, from both the patient and caregiver perspectives.
In the ADJUST-study, we investigated the prevalence of adjustment disorder in cancer patients and the reach, efficacy and budget impact of a tailored psychological treatment, according to the guidelines. Previously, I played a role in the development of Oncokompas for cancer patients in palliative care and testing its efficacy and cost-utility. Oncokompas is an eHealth application that facilitates self-management. Alongside Oncokompas, we developed LearnPAL, a mobile learning tool on palliative cancer care.
My dissertation revolved around meaning-centered group psychotherapy for cancer survivors. I examined the long-term effects of this psychological intervention, and whether an enhanced sense of meaning in life mediates a reduction in depressive symptoms. Furthermore, I studied the intertwinement between meaning-making, positive mental health and psychological posttraumatic growth in cancer survivors.
Education
Coordinator Master track Clinical Psychology
Course coordinator Psyche & Soma
Coordinator Bachelor’s Thesis Clinical Psychology
Supervisor Master’s Thesis Clinical Psychology
Ancillary activities
- Stichting Klimaatpsychologie | Deventer | Lid werkgroep Onderwijs & Onderzoek | 2023-01-01 - present
Ancillary activities are updated daily
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 3 Good Health and Well-being
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Collaborations and top research areas from the last five years
Research output
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Capturing nature Connectedness: Validity and utility of the Dutch nature connection index
van den Bogerd, N., Richardson, M., Bentvelsen, J., Holtmaat, K., Labib, S. M. & Maas, J., Sept 2025, In: Journal of Environmental Psychology. 106, p. 1-8 8 p., 102727.Research output: Contribution to Journal › Article › Academic › peer-review
Open Access -
From dyadic coping to emotional sharing and multimodal interpersonal synchrony: Protocol for a laboratory experiment
Zeng, Z., Holtmaat, K., Jia, X., Kleiboer, A., Rhighetti, F., Brouwer, A. M., Ramseyer, F., Hendrikse, S. C. F. & Koole, S. L., May 2025, In: PLoS ONE. 20, 5, p. 1-13 13 p., e0323526.Research output: Contribution to Journal › Article › Academic › peer-review
Open Access -
Does enhanced meaning after meaning-centered group psychotherapy mediate a reduction in depressive symptoms in cancer survivors? A mediation analysis in the context of a randomized controlled trial
Holtmaat, K., van der Spek, N., Rijnhart, J. J. M., Lissenberg-Witte, B., Breitbart, W., Cuijpers, P. & Verdonck-de Leeuw, I. M., Dec 2024, In: Supportive Care in Cancer. 32, 12, p. 1-9 9 p., 832.Research output: Contribution to Journal › Article › Academic › peer-review
Open AccessFile71 Downloads (Pure) -
Chinese college students’ mental health during the first three months of the COVID-19 pandemic: the protective role of family functioning
Zeng, Z., Holtmaat, K., Leeuw, I. M.V.-D. & Koole, S. L., 25 Apr 2024, In: Frontiers in public health. 12, 1383399.Research output: Contribution to Journal › Article › Academic › peer-review
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Psychological care for cancer survivors: a 2 × 2 model of interpersonal emotion regulation by caregivers
Zeng, Z., Holtmaat, K. & Koole, S. L., 2024, In: Frontiers in Psychology. 15, p. 1-5 5 p., 1390692.Research output: Contribution to Journal › Article › Academic › peer-review
Open Access
Courses
Projects
- 1 Active
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MiMoMent: Migrant Mother Mental Health (MiMoMent): epidemiology and neurobiological correlates of perinatal mental health among migrant mother-child dyads living in the Netherlands
Ceccarelli, C. (PhD candidate), Witteveen, A. (Principal Investigator), Sijbrandij, M. (Principal Investigator), Holtmaat, K. (Project Researcher) & Henrichs, J. (Project Researcher)
1/09/23 → 31/08/29
Project: Research
Prizes / Grants
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Dream Green: A vision for sustainable healthy futures in Amsterdam
Kluiving, S. (Recipient), van den Bogerd, N. (Recipient), Brouwer, I. (Recipient), Hoekstra, T. (Recipient), Holtmaat, K. (Recipient) & van der Linden, M. (Recipient), 23 Apr 2024
Prize / Grant: Grant › Societal
Datasets
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ADJUSTment Disorder in Cancer Patients: Effectiveness and Cost-Utility of Tailored Psychological Treatment (ADJUST-study, work package 2).
van Beek, F. (Creator), de Leeuw-Verdonck, I. (Creator) & Holtmaat, K. (Creator), Vrije Universiteit Amsterdam, 2022
Dataset / Software: Dataset
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Changes in your life after cancer treatment (ADJUST-study, work package 1).
van Beek, F. (Creator), de Leeuw-Verdonck, I. (Creator) & Holtmaat, K. (Creator), Vrije Universiteit Amsterdam, 2022
Dataset / Software: Dataset