Abstract: Major developments in attachment research over the past 2 decades have introduced parental mentalization as a predictor of infant-parent attachment security Parental mentalization is the degree to which parents show frequent, coherent, or appropriate appreciation of their infants' internal states The present study examined the triangular relations between parental mentalization, parental sensitivity, and attachment security A total of 20 effect sizes (N = 974) on the relation between parental mentalization and attachment, 82 effect sizes (N = 6,664) on the relation between sensitivity and attachment, and 24 effect sizes (N = 2,029) on the relation between mentalization and sensitivity were subjected to multilevel meta-analyses The results showed a pooled correlation of r = 30 between parental mentalization and infant attachment security, and rs of 25 for the correlations between sensitivity and attachment security, and between parental mentalization and sensitivity A meta-analytic structural equation model was performed to examine the combined effects of mentalization and sensitivity as predictors of infant attachment Together, the predictors explained 12% of the variance in attachment security After controlling for the effect of sensitivity, the relation between parental mentalization and attachment remained, r = 24; the relation between sensitivity and attachment remained after controlling for parental mentalization, r = 19 Sensitivity also mediated the relation between parental mentalization and attachment security, r = 07, suggesting that mentalization exerts both direct and indirect influences on attachment security The results imply that parental mentalization should be incorporated into existing models that map the predictors of infant-parent attachment (PsycINFO Database Record

Abstract: In the last decade several studies have investigated the role of parental reflective functioning (RF), defined as the parental ability to understand his/her child’s mental states, on the child’s development. Herein, a narrative review on parental RF is presented aimed at 1) presenting an overview of the existing empirical studies, 2) pinpointing unrequited questions, and 3) identifying future research directions. Specifically, the current review focused on a) the impact of parental RF on the quality of caregiving and the child’s attachment security, b) the effect of parental RF on the child’s emotion regulation and the child’s RF, c) maternal RF in women with a history of neglect and abuse, d) the efficacy of mentalization-based clinical interventions, and e) the recently developed Parental Reflective Questionnaire. The following terms “maternal reflective functioning”, “paternal reflective functioning”, “parental reflective functioning”, “parental mentalization”, “maternal mentalization”, and “paternal mentalization” were searched in titles, abstracts, and main texts using Medline, Web of Science, and Scopus databases. Next, a search in Mendeley was also conducted. Inclusion criteria comprised original articles if they refer to the Reflective Functioning Scale (Fonagy, Target, Steele, and Steele, 1998) and were published in an English language, peer-reviewed journal before July, 2016. According to exclusion criteria, dissertations, qualitative or theoretical papers, and chapters in books were not taken into account. The review includes 47 studies that, taken together, supported the notion that higher parental RF was associated with adequate caregiving and the child’s attachment security, whereas low maternal RF was found in mothers whose children suffered from anxiety disorders, impairment in emotion regulation, and externalizing behaviors. In addition, higher parental RF was associated with better mentalizing abilities in children. However, unexpected findings have emerged from the most recent randomized controlled trials that tested the efficacy of mentalization-based interventions in high risk samples of mothers, raising questions about the suitability of the verbal measures in capturing the mentalizing processes at the root of the parental capacity to be adequately responsive to the child’s emotional needs.

Abstract: Mothers with histories of alcohol and drug addiction have shown greater difficulty parenting young children than mothers with no history of substance misuse. This study was the second randomized clinical trial testing the efficacy of Mothering From the Inside Out (MIO), a 12-week mentalization-based individual therapy designed to address psychological deficits commonly associated with chronic substance use that also interfere with the capacity to parent young children. Eighty-seven mothers caring for a child between 11 and 60 months of age were randomly assigned to receive 12 sessions of MIO versus 12 sessions of parent education (PE), a psychoeducation active control comparison. Maternal reflective functioning, representations of caregiving, mother-child interaction quality, and child attachment were evaluated at baseline and posttreatment and 3-month follow-up. Mother-child interaction quality was assessed again at 12-month follow-up. In comparison with PE mothers, MIO mothers demonstrated a higher capacity for reflective functioning and representational coherence at posttreatment and 3-month follow-up. At 12-month follow-up, compared to PE cohorts, MIO mothers demonstrated greater sensitivity, their children showed greater involvement, and MIO dyads showed greater reciprocity. As addiction severity increased, MIO also appeared to serve as a protective factor for maternal reflective functioning, quality of mother-child interactions, and child attachment status. Results demonstrate the promise of mentalization-based interventions provided concomitant with addiction treatment for mothers and their young children.

Abstract: This paper reviews recent theoretical, empirical, and clinical work related to parental reflective functioning (PRF) or parental mentalizing. PRF refers to the capacity of the parent to envision his or her child as being motivated by internal mental states such as feelings, wishes, and desires, and to be able to reflect on his or her own internal mental experiences and how they are shaped and changed by interactions with the child. This paper first briefly discusses the historical and theoretical background of this concept and its purported role in child development, with a focus on the development of child attachment, affect regulation, and mentalizing. It then reviews recent thinking and research in four areas: (1) the neurobiology underlying PRF, (2) the multidimensionality of PRF, (3) the relationship between PRF and trauma, and (4) the broader relevance of attention to internal mental states for the development of epistemic trust as the basis of an evolutionary inbuilt capacity for learning f...

Abstract: Adolescent borderline personality disorder (BPD) is a devastating disorder, and it is essential to identify and treat the disorder in its early course. A total of 34 female Danish adolescents between 15 and 18 years old participated in 1 year of structured mentalization-based group therapy. Twenty-five adolescents completed the study, of which the majority (23) displayed improvement regarding borderline symptoms, depression, self-harm, peer-attachment, parent-attachment, mentalizing, and general psychopathology. Enhanced trust in peers and parents in combination with improved mentalizing capacity was associated with greater decline in borderline symptoms, thereby pointing to a candidate mechanism responsible for the efficacy of the treatment. The current study provides a promising rationale for the further development and evaluation of group-format mentalization-based treatment for adolescents with borderline traits. (PsycINFO Database Record

Abstract: Introduction Schizophrenia to a considerably great degree impairs the social functioning of the persons affected in the spheres of interpersonal and occupational contacts, as well as self-care. It brings about serious cognitive, perceptual, motor and emotional deficits, inevitably leading to the social withdrawal of patients. This phenomenon may assume various forms, from the limitations in interpersonal relations, through narrowing these relations to only some circumstances, to the total cessation of social contacts. Objective The objective of the study is presentation of the most important problems related with social functioning and quality of life of patients diagnosed with schizophrenia, based on scientific studies conducted in Poland and worldwide. State of knowledge The family of a schizophrenia patient exerts a great effect on the social functioning. While undertaking proper actions the family may become a co-therapist and significantly facilitate the patient's adjustment to life in society and his/her playing a specified role. Analysis of disorders in social functioning of patients with schizophrenia, in the context of social cognition, indicates the fact that these disorders have their source in the lack of capabilities for identification of own and other people's internal states, whereas mentalization is the essence of social cognition. Conclusions Therapy, any psychosocial impact as well as rehabilitation, neutralizes the causes for patients' withdrawal from social life. Training of social skills is necessary which teaches patients to return to the situation when they would be able to function properly in their environment.

Abstract: Theory of mind, or mentalizing, defined as the ability to reason about another's mental states, is a crucial psychological function that is disrupted in some forms of psychopathology, but little is...

Abstract: This article sets out the relevance of recent theoretical developments in the areas of mentalizing, attachment and epistemic trust in relation to group therapy. It begins with an account of the role of mentalizing in the attachment context in the development of epistemic trust—defined as trust in the authenticity and personal relevance of interpersonally transmitted knowledge about how the social environment works. It then explains the particular way in which this emphasis on social communication is pertinent to group therapy and its function as a training ground for mentalizing and the initial experimentation with the opening of epistemic trust in a social context. The article finishes with an account of how mentalization-based group work is undertaken.

Abstract: Mindreading refers to the ability to attribute mental states, including thoughts, intentions and emotions, to oneself and others, and is essential for navigating the social world. Empirical mindreading research has predominantly featured children, groups with autism spectrum disorder and clinical samples, and many standard tasks suffer ceiling effects with neurologically typical (NT) adults. We first outline a case for studying mindreading in NT adults and proceed to review tests of emotion perception, cognitive and affective mentalizing, and multidimensional tasks combining these facets. We focus on selected examples of core experimental paradigms including emotion recognition tests, social vignettes, narrative fiction (prose and film) and participative interaction (in real and virtual worlds), highlighting challenges for studies with NT adult cohorts. We conclude that naturalistic, multidimensional approaches may be productively applied alongside traditional tasks to facilitate a more nuanced picture of mindreading in adulthood, and to ensure construct validity whilst remaining sensitive to variation at the upper echelons of the ability.

Abstract: This is the first comprehensive clinical introduction to using a time-limited mentalizing approach for working with children, ages 5 to 12, who experience emotional and behavioral problems, including anxiety, depression, and relational difficulties. Mentalization-based treatment (MBT) promotes a child's ability to make sense of their own mind, and the minds of others around them. The authors, an international team of clinician–researchers who are pioneering the MBT model with children, explore the significance of mentalization and describe in detail the process of conducting short-term (9–12 sessions) MBT for children, including problem assessment and case formulation in terms of mentalizing techniques, the therapist's stance, and treatment termination. The approach draws on traditional psychodynamic principles but integrates them with findings from attachment theory, the empirical study of mentalization, and features of other evidence-based approaches. This book includes a chapter-length case illustration and an appendix that lists measures of reflective functioning in children and their parents as well as validation articles.

Abstract: This study was designed to test the hypothesis that individuals with antisocial, particularly violent, histories of offending behavior have specific problems in social cognition, notably in relation to accurately envisioning mental states. Eighty-three male offenders on community license, 65% of whom met the threshold for antisocial personality disorder (ASPD), completed a battery of computerized mentalizing tests requiring perspective taking (Perspectives Taking Test), mental state recognition from facial expression (Reading the Mind in the Eyes Test), and identification of mental states in the context of social interaction (Movie for the Assessment of Social Cognition). The results were compared with a partially matched sample of 42 nonoffending controls. The offender group showed impaired mentalizing on all of the tasks when compared with the control group for this study when controlling for demographic and clinical variables, and the offending group performed poorly in comparisons with participants in published studies, suggesting that limited capacity to mentalize may be part of the picture presented by individuals with histories of offending behavior. Offenders with ASPD demonstrated greater difficulty with mentalizing than non-ASPD offenders. Mentalization subscales were able to predict offender status and those with ASPD, indicating that specific impairments in perspective taking, social cognition, and social sensitivity, as well as tendencies toward hypomentalizing and nonmentalizing, are more marked in individuals who meet criteria for a diagnosis of ASPD. Awareness of these deficits may be helpful to professionals working with offenders, and specifically addressing these deficits may be a productive aspect of therapy for this "hard to reach" clinical group.

Abstract: The current study was aimed to test a developmental model of dissociation. This model is based on clinical observations and research findings concerning the role of childhood emotional neglect in the development and maintenance of dissociative symptoms. Seven hundred ninety-two adult volunteers completed questionnaires on parental bonding, theory of mind, alexithymia, and dissociation. Significant associations were found between the investigated variables, and a multiple mediation analysis showed that the relationship between childhood emotional neglect and dissociation was totally mediated by theory of mind and alexithymia. The findings of this study support the view that childhood experiences of emotional neglect may foster difficulties mentalizing as well as problems with affect regulation, with these two factors interacting to generate excessively activated dissociative processes. This may suggest that individuals who were exposed to emotional neglect during their childhood and who currently suffer from dissociative symptoms may greatly benefit from clinical interventions aimed to foster mentalized affectivity.

Abstract: Objective: To test whether adherence to mentalization-based treatment (MBT) principles predict better patient in-session mentalizing. Methods: Two sessions for each of 15 patients with borderline p ...

Abstract: The quality of implementation of evidence-based treatment programs for borderline personality disorder (BPD) in routine clinical care is a neglected issue. The first aim of this mixed-method naturalistic study was to explore the impact of organizational changes on treatment effectiveness of a day-hospital programme of mentalization-based treatment. Consecutively referred BPD patients were divided into a pre-reorganization cohort (PRE-REORG) and a cohort during reorganization (REORG). Psychiatric symptoms (Brief Symptom Inventory) and personality functioning (Severity Indices of Personality Problems-118) before treatment and at 18- and 36-month follow-up were compared using multilevel modelling. Effect sizes in the PRE-REORG cohort were approximately twice as large at 18 months (PRE-REORG: range 0.81-1.22; REORG: range 0.03-0.71) and three times as large at 36 months (PRE-REORG: range 0.81-1.80; REORG: range 0.27-0.81). The quantitative results of this study suggest that even when mentalization-based treatment is successfully implemented and the structure of the programme remains intact, major organizational changes may have a considerable impact on its effectiveness. Second, we aimed to explore the impact of the reorganization on adherence at organizational, team and therapist level. The qualitative results of this study indicate that the organizational changes were negatively related to adherence to the treatment model at organizational, team and therapist level, which in turn was associated with a decrease in treatment effectiveness. The implications of these findings for the implementation of effective treatments for BPD in routine clinical practice are discussed. Copyright © 2017 John Wiley & Sons, Ltd.

Abstract: Researchers investigated the association among food addiction, difficulties in emotion regulation, and mentalization deficits in a sample of 322 Italian adults from the general population. All participants were administered the Italian versions of the Yale Food Addiction Scale (I-YFAS), the Difficulties in Emotion Regulation Scale, the Mentalization Questionnaire, the Binge Eating Scale, and the Michigan Alcohol Screening Test. Of respondents, 7.1% reported high food-addiction symptoms (ie, 3 or more symptoms of food addiction on the I-YFAS). In bivariate analyses, high food-addiction symptoms were associated with more difficulties in emotion regulation and mentalization deficits. In the multivariate analysis, high food-addiction symptoms remained independently associated with mentalization deficits, but not with difficulties in emotion regulation. Our data suggest that mentalization may play an important role in food addiction by making it difficult for an individual to understand his or her own inner mental states as well as the mental states of others, especially when powerful emotions arise.

Abstract: Background Increasing evidence supports that mentalization deficits may have a role in the genesis of young age depression; however, few studies examined this issue in clinical populations. Methods Outpatients aged 14–21, suffering from various psychiatric disorders, were assessed using the Mentalization Questionnaire (MZQ), the Beck Depression Inventory (BDI), and the Childhood Trauma Questionnaire (CTQ), using data from age-matched healthy students for comparison. The relationship between CTQ, MZQ, and BDI scores was examined at the cross-sectional level, including mediation analyses, and longitudinally, in a subsample who underwent a psychotherapy intervention. Results Of 83 subjects, 33 (39.8%) had mentalization levels that were 1 standard deviation below those of comparison subjects. In the whole sample, the levels of mentalization were inversely associated with BDI (r = −.68, p < .001) and CTQ scores (r = −.30, p = .006). Moreover, MZQ scores mediated a large part of the effect of childhood trauma on depression (total effect: 10.6, 95% CI: 5.3, 15.9; direct effect: 6.5, 95% CI: 2.1, 10.8; indirect effect: 4.1, 95% CI: 1.5, 7.4). This effect was almost entirely explained by the Affect Regulation subscale. In patients re-evaluated after four sessions (n = 37), the decrease in BDI scores correlated with the increase in MZQ scores (r = .40, p = .02). Conclusions In a juvenile clinical sample, deficits of mentalization abilities were associated with the severity of depression and explained part of the depressogenic effects of childhood trauma.

Abstract: Mentalization, operationalized as reflective functioning (RF), can play a crucial role in the psychological mechanisms underlying personality functioning. This study aimed to: (a) study the association between RF, personality disorders (cluster level) and functioning; (b) investigate whether RF and personality functioning are influenced by (secure vs. insecure) attachment; and (c) explore the potential mediating effect of RF on the relationship between attachment and personality functioning. The Shedler-Westen Assessment Procedure (SWAP-200) was used to assess personality disorders and levels of psychological functioning in a clinical sample ( N = 88). Attachment and RF were evaluated with the Adult Attachment Interview (AAI) and Reflective Functioning Scale (RFS). Findings showed that RF had significant negative associations with cluster A and B personality disorders, and a significant positive association with psychological functioning. Moreover, levels of RF and personality functioning were influenced by attachment patterns. Finally, RF completely mediated the relationship between (secure/insecure) attachment and adaptive psychological features, and thus accounted for differences in overall personality functioning. Lack of mentalization seemed strongly associated with vulnerabilities in personality functioning, especially in patients with cluster A and B personality disorders. These findings provide support for the development of therapeutic interventions to improve patients’ RF.

Abstract: There are several evidence-based treatments for borderline personality disorder, but very little is known about the success or failure of implementation in daily practice. This study aims to investigate the success or failure of newly started mentalization-based treatment programs, and to explore the barriers and facilitators. The implementation trajectories of seven different mentalization-based treatment programs in six mental health clinics in the Netherlands were included in a multiple case study combining a qualitative and quantitative design. Semi-structured interview data were collected from several stakeholders of each program. Narrative reconstructions of each interview were assessed by 12 independent experts. Results showed that several programs struggled to implement their program successfully, leading to discontinuation in three programs. According to the experts, particularly elements at the organizational level (i.e. organizational support) and team level (i.e. leadership) contributed to implementation outcome. These findings have important implications for the translation of guidelines and research findings in daily practice. Copyright © 2017 John Wiley & Sons, Ltd.

Abstract: Objectives Borderline personality disorder (BPD) is characterized by emotional instability, interpersonal dysfunction, and other features that typically develop before a background of insecure attachment and traumatic experiences. Dialectical behaviour therapy (DBT) has proven highly effective in reducing self-harm and improving emotion regulation, whereby problems concerning social cognition, which are also characteristic of BPD, may need additional approaches such as mentalization-based treatment (MBT). Methods Here, we examined, in a pilot study, the effectiveness of MBT given adjunct to DBT, compared to DBT alone, in an inpatient sample with BPD, whereby mentalization was measured using a novel cartoon-based task. Results Both treatments were highly effective in reducing symptom severity. The combination of DBT and MBT was superior in reducing fearful attachment and in improving affective mentalizing. Conclusions Mentalization-based treatment in combination with DBT may improve certain aspects of social cognitive skills and attachment security, as compared to DBT alone, although the exact mechanisms that led to these changes need to be studied further. Practitioner points Clinical implications Dialectical behaviour therapy (DBT) can usefully be combined with mentalization-based treatment (MBT). The combination of DBT and MBT reduces self-harm more than DBT alone. DBT plus MBT may lead to a reduction in fearful attachment and improvement of affective mentalizing. Short-term combinations of evidence-based borderline treatments may enrich psychiatric inpatient care. Therefore, such approaches deserve further research. Limitations The treatment condition was therapeutically more intense than the control condition. The study lacked a follow-up assessment. The impact of comorbid conditions on treatment response was not taken into account. Adherence to the manualized approach was not measured.

Abstract: Concepts such as “theory of mind”, “simulation”, or “mentalization” have in common that they conceive of social understanding and empathy as a projection onto others of inner modellings or representations. In contrast, Fuchs presents a non-representational concept of primary empathy, based on an embodied and enactive view of intersubjectivity. According to this concept, social understanding is not realized within one individual, but arises in the moment-to-moment interaction of two subjects. To further explicate this perspective, the author examines different levels of empathy and their interrelations: the development of social understanding in early infancy, different forms of extended empathy as enabled by perspective-taking and other cognitive components, and reiterated empathy in which we experience the empathic reaction of others towards ourselves.

Abstract: Group psychotherapy is a useful clinical practice for adolescents with mental health issues. Groups typically consist of young people of similar ages but with different personalities, and this results in a complex communication network. The goal of group psychoanalytic psychotherapy is to improve participants' mentalization abilities, facilitating interactions between peers and their therapist in a safe, containing environment. The main aim of this study was to analyze conversation turn-taking between a lead therapist, a co-therapist, and six adolescents over the course of 24 treatment sessions divided into four blocks over 8 months. We employed a mixed-methods design based on systematic observation, which we consider to be a mixed method itself, as the qualitative data collected in the initial observation phase is transformed into quantitative data and subsequently interpreted qualitatively with the aid of clinical vignettes. The observational methodology design was nomothetic, follow-up, and multidimensional. The choice of methodology is justified as we used an ad-hoc observation instrument combining a field format and a category system. Interobserver agreement was analyzed quantitatively by Cohen's kappa using the free QSEQ5 software program. Once we had confirmed the reliability of the data, these were analyzed by polar coordinate analysis, which is a powerful data reduction technique that provides a vector representation of relationships between categories. The results show significant relationships between the therapist and (1) the activation of turn-taking by the participants and the co-therapist and silence and (2) conversation-facilitating interventions and interventions designed to improve mentalization abilities. Detailed analysis of questions demonstrating interest in others showed how the communication changed from radial interactions stemming from the therapist at the beginning of therapy to circular interactions half way through. Repetition was found to be a powerful conversation facilitator. The results also illustrate the role of the therapist, who (1) did not facilitate interventions by all participants equally, (2) encouraged turn-taking from more inhibited members of the group, (3) stimulated conversation from the early stages of therapy, and (4) favored mentalization toward the end. Despite its complexity, polar coordinate analysis produces easy-to-interpret results in the form of vector maps.

Abstract: Background: Emotional abuse and emotional neglect are related to impaired interpersonal functioning. One underlying mechanism could be a developmental delay in mentalizing, the ability to understand other people's thoughts and emotions.Objective: This study investigates the neural correlates of mentalizing and the specific relationship with emotional abuse and neglect whilst taking into account the level of sexual abuse, physical abuse and physical neglect.Method: The RMET was performed in an fMRI scanner by 46 adolescents (Age: M = 18.70, SD = 1.46) who reported a large range of emotional abuse and/or emotional neglect. CM was measured using a self-report questionnaire (CTQ).Results: Neither severity of emotional abuse nor neglect related to RMET accuracy or reaction time. The severity of sexual abuse was related to an increased activation of the left IFG during mentalization even when controlled for psychopathology and other important covariates. This increased activation was only found in a group reporting both sexual abuse and emotional maltreatment and not when reporting isolated emotional abuse or neglect or no maltreatment. Functional connectivity analysis showed that activation in the left IFG was associated with increased activation in the right insula and right STG, indicating that the IFG activation occurs in a network relevant for mentalizing.Conclusions: Being sexually abused in the context of emotional abuse and neglect is related to an increase in activation of the left IFG, which may indicate a delayed development of mirroring other people's thoughts and emotions. Even though thoughts and emotions were correctly decoded from faces, the heightened activity of the left IFG could be an underlying mechanism for impaired interpersonal functioning when social situations are more complex or more related to maltreatment experiences.

Abstract: Attachment theory, developed by the British psychoanalyst John Bowlby and his American colleague Mary Ainsworth (Bowlby, Attachment and loss, 1969; Ainsworth et al., Patterns of attachment, 1978), aims at explaining why early interactions with caregivers have such a pervasive and lasting effect on personality development beyond childhood. Combining aspects of Darwinian evolutionary biology with social and personality psychology, attachment theory is built upon an inherent cross talk between disciplines. Attachment is conceptualized to rely upon both a behavioral system with a biological function and a cognitive substrate in terms of mental representations of person-environment interactions. Because of its comprehensive nature, attachment theory has become one of the most heavily researched conceptual frameworks in modern psychology (Mikulincer & Shaver, Attachment in adulthood: structure, dynamics, and change, 2007) and has recently inspired growing interest in the field of social neuroscience (Vrticka & Vuilleumier, Front Hum Neurosci 6, 212, 2012). Within the context of this book concerned with the missing link between neuroscience and social science, attachment theory offers a good practical example of a fruitful dialogue between disciplines helping to better understand human development. In the present chapter, I will first describe the fundamental assumptions of attachment theory and discuss their implications from an evolutionary as well as sociocultural perspective. I will then illustrate how attachment theory has inspired applied research in the field of social neuroscience and how the insights gained so far can inform possible prevention and intervention strategies in the context of mental and physical health and policy making across disciplines. Finally, I will comment on the remaining issues and future avenues of this still very young and exciting field of research termed “the social neuroscience of attachment.”

Abstract: Previous research, which primarily focused on adult samples, suggests that individuals with borderline personality disorder (BPD) display high levels of psychopathology, dysfunctional mentalization and problematic attachment to others. The current study investigated whether impairments in mentalization, attachment, and psychopathology are more severe in outpatient adolescents with BPD than in a clinical comparison group. Consecutive referrals to a child and adolescent psychiatric clinic were clinically assessed with a battery of self-report instruments to assess mentalization, attachment, and psychopathology. Specifically, in regard to BPD a self-report questionnaire was employed to decide if patients were classified into the BPD or the clinical comparison group. The main outcome variables of adolescents with a primary diagnosis of BPD were then compared with those of a clinical comparison group comprising patients receiving psychiatric diagnoses other than BPD. Relative to the clinical group without BPD, and after controlling for sociodemographic variables, the BPD group displayed poorer mentalizing abilities, more problematic attachments to parents and peers, and higher self-reported levels of psychopathology. The results of this study suggest that BPD is a severe mental condition in adolescents and is characterized by poor mentalizing abilities, attachment problems and high levels of psychopathology compared to adolescents with psychiatric disorders other than BPD. Hence, clinicians should consider BPD when conducting diagnostic assessments, and evidence-based treatments for this vulnerable group should be developed.