Karlijn van Heijst
Research assistant
- Name
- K. van Heijst MSc
- Telephone
- +31 71 527 2727
- k.van.heijst@fsw.leidenuniv.nl
- ORCID iD
- 0000-0002-4492-3507

Karlijn van Heijst is a research assistant in the Comparative Psychology and Affective Neuroscience (CoPAN) group of Prof. dr. Mariska Kret.
More information about Karlijn van Heijst
Short CV
Karlijn van Heijst is a research assistant in the Comparative Psychology and Affective Neuroscience (CoPAN) group of Prof. dr. Mariska Kret. After completing a bachelor’s degree in biomedical sciences at Radboud University Nijmegen and a master’s degree in behavioral neuroscience at the University of Amsterdam, she switched focus to studying non-human animal behavior. This switch was driven by a deep curiosity and passion to better understand non-human animals. Her master’s literature thesis, for which she compared two major emotion theories on their evolutionary basis, sparked her fascination with non-human animal emotion – both to better understand the role emotions play in their lives and to inform us about how emotions may have evolved in humans. She completed a graduate internship in the CoPAN group, during which she assisted with ongoing research with zoo-housed orangutans, and worked as a research assistant at the Wildlife Research Center at Kyoto University, running a playback experiment with zoo-housed bonobos in Germany. She then spent a year in the field observing wild Sumatran orangutans in Indonesia as a field research assistant at the Max Planck Institute of Animal Behavior. After coming back from Indonesia, she rejoined the CoPAN group as a research assistant to study emotional attention bias in zoo-housed orangutans, while also assisting with other research projects and managing data collection in collaborating zoos. She aims to pursue a PhD in the field of animal emotion, social behavior, and/or communication.
Research assistant
- Faculteit der Sociale Wetenschappen
- Instituut Psychologie
- Cognitieve Psychologie
- Brooks J., Heijst K. van, Epping A., Lee S.H. Niksarli A., Pope A. Clay Z., Kret M.E., Taglialatela J. & Yamamoto S. (2024), Increased alertness and moderate ingroup cohesion in bonobos’ response to outgroup cues, PLoS One 19(8): 0307975.
- Brooks J., Heijst K. van, Epping A., Lee S.H., Niksarli A. Pope A., Clay Z., Kret M. E., Taglialatela J. & Yamamoto S. (2024), Increased alertness and moderate ingroup cohesion in bonobos’ response to outgroup cues, PLoS One 19(8): e0307975.
- Heijst K. van: Kret M.E. & Ploeger A. (2023), Basic emotions or constructed emotions : insights from taking an evolutionary perspective, Perspectives on Psychological Science : .