Nikki van Leeuwen

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The aim of this study was to assess the relative contributions of psychopathic, narcissistic, Machiavellian, and sadistic traits to delinquent behaviors in adolescents. Participants were 615 high-school students who completed self-report questionnaires. Psychopathic, narcissistic, Machiavellian, and sadistic traits were moderately correlated suggesting they(More)
The aim of the present study was to assess the relative contributions self-serving cognitive distortions and psychopathic traits to adolescent antisocial behavior. Participants were 972 high-school students who completed self-report questionnaires. Hierarchical multiple regression analyses showed that selfserving cognitive distortions, psychopathic traits,(More)
Callous-unemotional and borderline traits, antisocial behaviors, depressive symptoms and social anxiety were assessed in 972 high-school students. Cluster analysis yielded four groups: a low traits group, a second group that was above the mean in callous-unemotional traits and below the mean in borderline traits (moderate callous-unemotional traits(More)
This study examined dimensions of crying and its relations with ocular dryness and mental well-being in patients with Sjögren’s syndrome, a systemic autoimmune disease with dryness as primary symptom. Three-hundred patients with Sjögren’s syndrome completed questionnaires on crying, dryness, and well-being. The crying questionnaire revealed four dimensions:(More)
Raju Kandimalla, Roy Masius, Willemien Beukers, Chris H. Bangma, Torben F. Orntoft, Lars Dyrskjot, Nikki van Leeuwen, Hester Lingsma, Angela A. G. van Tilborg, Ellen C. Zwarthoff Department of Pathology, Erasmus MC, Rotterdam, The Netherlands Department of Urology, Erasmus MC, Rotterdam, The Netherlands Department of Molecular Medicine, Aarhus University(More)
Purpose: DNA methylation is associated with bladder cancer and these modifications could serve as useful biomarkers. FGFR3 mutations are present in 60% to 70% of non–muscle invasive bladder cancer (NMIBC). Low-grade bladder cancer recurs in more than 50% of patients. The aim of this study is to determine the sensitivity and specificity of a urine assay for(More)
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