I am an Assistant Professor in Clinical Psychology at Leiden University, after working at / visiting the University of Amsterdam, University of Leuven, the University of Michigan, Arizona State University, Virginia Commonwealth University, and Free University of Berlin. I work in the fields of clinical psychology, psychiatry, epidemiology, and methodology, and occasionally dabble in philosophy of science. I run Eiko-Fried.com and Psych-Networks.com, and here is my CV.
My main interest lies in studying individual symptoms of mental disorders and their causal relations, a framework we have termed Symptomics. More generally, I am interested in four aspects of psychopathology research: measurement (how to best assess whether someone is ill), modeling (what statistical models are most appropriate to model psychopathology), ontology (what are mental disorders) and nosology (how do we best classify them). Lancet Psychiatry just published an incredibly kind profile about me and my work, which summarizes things pretty well. Apart from that, I am interested in improving cumulative psychological science through open science practices.