Carlijn Bergwerff

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Carlijn Bergwerff
PhD student

Professional interests

Introduction. Carlijn Bergwerff (1986) is a child and adolescent psychologist, who graduated in 2012 at Leiden University. Afterwards she started as a PhD student within the Child Study Group of the Clinical Neuropsychology section at Vrije Universiteit Amsterdam. Her research focuses on the aetiology and treatment of Attention Deficit/Hyperactivity Disorder (ADHD). One of the topics of interest of Carlijn is the association between amino acid concentrations and behavioural and neurocognitive functioning in children. Information about her research project can be found on the research website.

Research methods. Diagnostic interview, neuropsychological assessment, questionnaires,  observational methods, actigraphy, and plasma and urine analysis.

Job experience

Feb 2012 - present

PhD student at Vrije Universiteit Amsterdam, Clinical Neuropsychology section.

Project: The availability of aromatic amino acids in children with Attention Deficit/Hyperactivity Disorder.

May 2011 – Feb 2012

Clinical internship (child and adolescent psychology) at Bureau Toegepaste Sociale Wetenschappen, Hoofddorp.

Performing diagnostic and therapeutic activities with children, adolescents and adults in a psychologist practice.

Jan 2011 - Jun 2011

Teaching Assistant at Leiden University.

Assisting in the supervision of a research project of bachelor students.

Nov 2009 – Feb 2012

Coach at DOK20, Leiden.   

One to one coaching of children with a psychiatric disorder.


  • Supervision of Bachelor and Master theses (2012 – 2015)
  • Neuropsychological Assessment (Bachelor course; 2012-2014)