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Postdoc in Psychophysiology and Statistics

Leiden University, the department of Psychology of the Faculty of Social and Behavioural Sciences is looking for a Postdoc in Psychophysiology and Statistics

7 maanden geleden


Wassenaarseweg, Leiden, Zuid-Holland
Tijdelijk contract / Tijdelijke opdracht
Uren per week:
28 - 32 uur
€ 2709 - € 4274 per maand


Across human evolution, trust has enabled groups and institutions to cooperate, function, and prosper. However, within groups and institutions, individuals need to be prepared to detect non-co-operators and withhold trust, in order to avoid exploitation and betrayal. To tackle this evolutionary exchange problem, humans rely on phylogenetically old mechanisms that help them make quick and accurate evaluations of another’s emotions and intentions. One such mechanism is mimicry, which occurs at different levels (e.g. body, face, physiology). The question of what purpose mimicry serves is one of the most perplexing unanswered questions in psychology. What is mimicry good for? By taking into account differences in empathy, this project aims to investigate the boundaries of the automated response that constitutes mimicry, by studying different forms of mimicry and their impact on social decisions during dyadic interactions in diverse contexts.

This project takes an integrative, multi-method approach to investigate what is expressed and mimicked during interactions and whether mimicry contributes to social decisions. To that extent, a broader than typical palette of expressions will be investigated, taken from the psychology as well as from the primatology literature (e.g. facial expressions, blush, eye contact, pupil dilation, tears, yawning, scratching etc.). We are seeking a candidate that can help set up statistical procedures to, amongst other things, (i) compute density networks with connections between all the expression modalities, (ii) investigate which expressions associate with certain decisions, (iii) set clear time windows (when is something ‘mimicry’ and when isn’t it anymore), (iv) confirm findings using machine learning such as a Random Forests approach.

This project is supported by an ERC Starting grant to Dr. Mariska Kret (Leiden University). The project will run in parallel with ongoing projects in the CoPAN lab, directed by Dr. Mariska Kret (www.mariskakret.com; see the Copan Leiden Facebook page). The research group participates in the Leiden Institute for Brain and Cognition, an interfaculty center for interdisciplinary research on brain and cognition (www.libc-leiden.nl).

Related publications: https://www.ncbi.nlm.nih.gov/pubmed/30714782; https://www.pnas.org/content/115/31/E7265;

Key responsibilities

  • Literature study, hypothesis-driven development and execution of experimental studies in the field of emotion (eye-tracking, psychophysiology, economic games);
  • Report results at conferences and in at least four international peer-reviewed journals;
  • Supervise BSc and MSc thesis projects and co-supervise PhD student;
  • Work in a team and participate in the Leiden Institute for Brain and Cognition (LIBC);
  • ERC-grant-related administration (e.g. progress reports).


  • PhD in psychology, neuroscience, mathematics or related field;
  • Knowledge of multilevel statistics and/or machine learning/random forests and/or network analyses;
  • Experience with psychophysiological methods;
  • Technical skills;
  • Programming experience (e.g., Matlab, R, e-prime);
  • Broad scientific interest beyond own field (e.g., evolutionary psychology, primatology, human-computer interactions, Virtual Reality etc.);
  • Open-minded.


We offer a fixed-term post for 3 years for 0.75FTE. This may be extended to a fulltime contract if the candidate is willing to teach on the side. Salary range from €2709.- to €4274.- gross per month (pay scale 10, in accordance with the Collective Labour Agreement for Dutch Universities). Preferred starting date: November 1st 2019 (up to 5 months later is discussable).

Leiden University offers an attractive benefits package with additional holiday (8%) and end-of-year bonuses (8.3%), training and career development. Our individual choices model gives you some freedom to assemble your own set of terms and conditions. For international spouses we have set up a dual career programme. Candidates from outside the Netherlands may be eligible for a substantial tax break. More at https://www.universiteitleiden.nl/en/working-at/job-application-procedure-and-employment-conditions.

Additional information

Leiden University is strongly committed to diversity within its community and especially welcomes applications from members of underrepresented groups.

Enquiries can be made to dr. Mariska Kret, email m.e.kret@fsw.leidenuniv.nl.