Patrick Luyten’s research while affiliated with KU Leuven and other places

Previous research suggests a connection between borderline personality disorder (BPD) and somatic comorbidities, underscoring the importance of lifestyle and health‐related behaviour (LHRB) in the emergence of BPD. We investigated LHRBs—physical activity, sleeping and overeating—among young people at different BPD stages compared to a matched community sample. Furthermore, we explored whether problematic LHRBs intensify in later BPD stages. Participants included 55 young people exhibiting BPD features from a specialized mental health care institution, matched with a community control group based on age, self‐reported and education. A MANOVA assessed differences in physical activity, sleep disturbance, sleep‐related impairment and emotional overeating between the BPD and control group. A second MANOVA explored these behaviours across BPD stages within the clinical group. Results revealed significantly higher levels of sleep‐related problems among young people with BPD features compared to controls. However, no significant differences were found in physical activity or emotional overeating. Furthermore, problematic LHRBs did not show a significant association with BPD stage. These findings contribute to a better understanding of the relationship between BPD and problematic LHRBs, emphasizing the importance of early intervention targeting sleep‐related problems in young people with BPD, alongside addressing other aspects of BPD and associated LHRBs.

Autonomy-supportive parenting benefits adolescents’ psychosocial adjustment, but daily fluctuations in adolescent difficulties and parenting stress can reduce autonomy support and lead to more controlling practices. However, currently it is not yet well understood why some parents seem better able to deal with the daily upheavals characteristic of adolescence, while other parents may resort to controlling practices. To address this gap, the present studies examined the moderating role of parental reflective functioning (i.e., parents’ capacity to understand their adolescent’s behavior in terms of mental states) in the daily relationships between adolescent difficulties, parental stress, and autonomy-supportive or controlling parenting. Two 7-day diary studies were conducted, of which Study 1 involved 220 parents of early adolescents (Mage = 13.05 years, SD = 0.87, range 10–15, 66% female) and Study 2 involved 161 parents of middle adolescents (Mage = 15.56 years, SD = 1.14, range = 13–18, 61.5% female). Multilevel analyses indicated that daily perceived externalizing difficulties and parental stress were associated with less autonomy-supportive and more controlling parenting. Furthermore, prementalizing (i.e., attributing malevolent intentions to adolescents) predicted less autonomy support and more controlling parenting. Greater interest and curiosity about adolescents’ mental states buffered the associations between middle adolescents’ (internalizing and externalizing) difficulties and parent-reported controlling parenting. These findings highlight the role of both parent and adolescent characteristics in day-to-day parenting fluctuations and underscore the importance of parental reflective functioning in understanding variations in autonomy-supportive and controlling practices.

Introduction Parental Reflective Functioning describes the parents’ ability to view their child as motivated by mental states. The Parental Reflective Functioning Questionnaire (PRFQ) represents an 18-item and three-factor self-report measure. Our goal was to conduct the first German validation study. Method In a community sample of 378 mothers of children aged 10.2–78.6 months, we used Confirmatory Factor Analysis with a cross-validation approach to assess model fit. Reliability was measured using Cronbach’s α and McDonald’s ω. Concurrent validity was assessed using correlations with relevant constructs. Results The three-factor structure of the original validation could be confirmed. The German model only needed minor modifications: two items had to be removed, and one error covariance was added. The resulting 16-item questionnaire with the three subscales “Pre-mentalizing”, “Interest and Curiosity about Mental States”, and “Certainty about Mental States” was successfully cross-validated (CFI = .94, TLI = .93, SRMR = .07, RMSEA = .04 (CI [.01, .06])). These factors were related in theoretically expected ways to parental attachment dimensions, emotional availability, parenting stress, and infant attachment status. Conclusion While reliability could still be improved, the German 16-item version of the PRFQ represents a valid measure of parental reflective functioning.

Epistemic trust ‐ defined as readiness to regard knowledge, communicated by another agent, as significant, relevant to the self, and generalizable to other contexts–has recently been applied to the field of developmental psychopathology as a potential risk factor for psychopathology. The work described here sought to investigate how the vulnerability engendered by disruptions in epistemic trust may not only impact psychological resilience and interpersonal processes but also aspects of more general social functioning. We undertook two studies to examine the role of epistemic trust in determining capacity to recognise fake/real news, and susceptibility to conspiracy thinking–both in general and in relation to COVID-19. Measuring three different epistemic dispositions–trusting, mistrusting and credulous–in two studies (study 1, n = 705; study 2 n = 502), we found that Credulity was associated with inability to discriminate between fake/real news. We also found that both Mistrust and Credulity mediated the relationship between exposure to childhood adversity and difficulty in distinguishing between fake/real news, although the effect sizes were small. Finally, Mistrust and Credulity were associated with general and COVID-19 related conspiracy beliefs and vaccine hesitancy. We discuss the implications of these findings for our understanding of fake news and conspiracy thinking.

Depression is a very common mental health problem in adolescence. Although over the past decades a number of psychological interventions for depression in adolescence have been developed and empirically evaluated, recent systematic reviews and meta-analyses suggest that there is considerable room for improvement of their effectiveness. This is particularly true for the treatment of adolescents with “complex” depression, that is, those where depression is embedded within broader personality and relational problems, often related to a history of attachment trauma. Mentalization-based treatment (MBT) may be particularly effective in these cases, as it has a strong focus on temporary and long-term impairments in mentalizing (i.e., the capacity to understand the self and others in terms of intentional mental states), which are very typical of adolescents with depression. This article outlines a continuum of severity of depression as seen from a mentalizing perspective, ranging from the mild to moderate to the more severe end of the spectrum. This is followed by a summary of the mentalizing approach to understanding depression along the spectrum of severity, the empirical evidence supporting this approach, and a description of the basic principles of MBT for depression. We close with some thoughts about the future of MBT in the treatment of depression in adolescents.