In 2012 he was appointed associate professor in the Department of Psychology, section Clinical Psychology.
His research investigates the psychobiology of medical disorders, with the aim to understand and mitigate the impact of disease.
His dual expertise in psychology and biology allows him to approach this topic in a genuinely interdisciplinary manner, by integrating methods and concepts from both fields, and apply these to experimental laboratory studies, clinical investigations, and epidemiological analyses. More recently hsi work has expanded to include Data Science and Artificial Intelligence (AI) as a source of novel approaches to the analysis and modification of human biology and behaviour. The latter program of research is funded by two H2020 consortium grants, of which he isa lead and a coordinator, and involves intensive collaborations with groups accross continental Europe, the UK, and the US.

Since 2019 he became Associate Editor of Health Psychology Review, having previously acted as associate/senior editor for Brain, Behavior & Immunity (2011-2014), Psychological Bulletin (2010-2013), and Health Psychology (2010-2015).

In 2018 he was appointed Program Leader of the AMC/VUmc research institute ‘Amsterdam Public Health' (APH), Divsion of Mental Health (https://www.amsterdamumc.org/research/institutes/amsterdam-public-health.htm). In 2020 I was reappointed for 2 more years.

In 2023 Jos was awarded a grant of more than seven million euros to commence new biomedical research into ME/CFS.

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