Eva Billen (PhD) is an assistant professor in the department of clinical psychology at the University of Amsterdam. She got her PhD at Tilburg University on improving the understanding of self-regulation in forensic settings. Her main interest is in forensic psychology and treatment. She has specific interests in self-regulation and personality, as well as changes and improvement during treatment and risk assessment. She has an interest in longitudinal and time-series data, both in the long-term and short-term. Research methods mostly focus on questionnaire and file data, but also include task data, qualitative interviews and experience sampling methods.