Jurrijn Koelen

University of Twente | UT · Department of Psychology, Health and Technology (PHT)

Emerging adulthood is an important developmental phase often accompanied by peaks in loneliness, social anxiety, and depression. However, knowledge is lacking on how the relationships between emotional loneliness, social loneliness, social isolation, social anxiety and depression evolve over time. Gaining insight in these temporal relations is cruc...

Background: According to cognitive theories, loneliness is associated with biased cognitive processes. However, studies investigating interpretation bias (IB) related to feelings of loneliness are scarce. The current study aimed to investigate (a) whether emotional loneliness (perceived absence of intimacy) and social loneliness (perceived absence...

Objective: Psychotherapies are increasingly incorporating spiritual and religious systems of belief and practice, which aligns with recent developments toward person-centered treatments. The main objective of this meta-analysis was to compare the efficacy of a religion and spiritually-based (R/S) therapy to non-R/S treatments. Method: A multi-le...

BACKGROUND Internet-based cognitive behavioral interventions (iCBT) are efficacious treatments of depression and anxiety. Yet, it is unknown whether adding human guidance is feasible and beneficial within a large educational setting. OBJECTIVE To potentially demonstrate: (1) the superiority of two variants of a transdiagnostic iCBT program (human-...

Background Internet-based cognitive behavioral interventions (iCBTs) are efficacious treatments for depression and anxiety. However, it is unknown whether adding human guidance is feasible and beneficial within a large educational setting. Objective This study aims to potentially demonstrate the superiority of 2 variants of a transdiagnostic iCBT...

Guided internet-based treatment is more efficacious than completely unguided or self-guided internet-based treatment, yet within the spectrum of guidance, little is known about the added value of human support compared to more basic forms of guidance. The primary aims of this meta-analysis were: (1) to examine whether human guidance was more effica...

Insecure attachment is a transdiagnostic personality factor which may confer risk for mental health issues. The mechanisms underlying this association may be partly explained by loneliness. Loneliness, which is common in young adulthood, also concerns social relationships and is similarly associated with negative mental health outcomes. This study...

Objective The COVID‐19 pandemic has confronted young adults with an unprecedented mental health challenge. Yet, prospective studies examining protective factors are limited. Methods In the present study, we focused on changes in mental health in a large sample (N = 685) of at‐risk university students, which were measured before and during the pand...

Introduction Emerging adulthood is a phase in life that is associated with an increased risk to develop a variety of mental health disorders including anxiety and depression. However, less than 25% of university students receive professional help for their mental health reports. Internet-based cognitive behavioural therapy (iCBT) may entail useful...

Research has demonstrated that maladaptive relational functioning of patients suffering from personality disorders is associated with more negative God representations. This study demonstrated with a single group design among a group of 37 Christian patients with personality disorders, that changes in implicit God representations during psychothera...

In the context of theistic religions, God representations are an important factor in explaining associations between religion/spirituality and well-being/mental health. Although the limitations of self-report measures of God representations are widely acknowledged, well-validated implicit measures are still unavailable. Therefore, we developed an i...

Research with self-report measures of God representations suggests an association with personality pathology. However, according to object-relations theory, God representations are predominantly implicit. This observational study aimed at validating the implicit Apperception Test God Representations (ATGR). In a group of 74 patients with personalit...

Context: Results of meta-analyses show weak associations between religiosity and well-being, but are based on divergent definitions of religiosity. Objective: The aim of this meta-analysis was to examine the magnitude of the associations between God representations and aspects of psychological functioning. Based on object-relations and attachment t...

For adherents of theistic religions, God representations are an important factor in explaining associations between religion/spirituality and well-being/mental health. Because of limitations of self-report measures of God representations, we developed an implicit God representation instrument, the Apperception Test God Representations (ATGR) and ex...

Theoretical considerations and empirical results suggest that attachment quality is relevant to obesity. This study used meta-analytic methods to systematically examine the empirical, peer-reviewed evidence regarding the relationship between attachment quality and body mass index (BMI) in separate metaanalyses for children and adults. Relevant peer...

Résumé Des considérations théoriques et des résultats empiriques suggèrent que la qualité de l’attachement est reliée à l’obésité. Dans le cadre de cette étude, on a eu recours à des méthodes méta-analytiques pour examiner systématiquement les données empiriques d’études soumises à un examen par les pairs, portant sur la relation entre la qualité d...

Patients with somatoform disorder (SFD) are characterized by the presence of chronic physical complaints that are not fully explained by a general medical condition or another mental disorder. Insecure attachment patterns are common in this patient group, which are often associated with interpersonal difficulties. In the present study, the mediatio...

In light of interpersonal difficulties and their relation to alexithymia in patients with somatoform disorder, the primary aim of this study was to explore the association between two insecure attachment strategies (deactivation and hyperactivation strategies), and affective and cognitive alexithymia in a sample of 128 patients with severe somatofo...

The primary aim of this equivalence study was to compare the outcome of a brief group therapeutic intervention, based on the principles of dynamic interpersonal therapy (DIT) with an intervention based on cognitive behavioural therapy (CBT) in patients suffering from medically unexplained somatic symptoms (MUSS). Participants were 89 patients (aged...

Social cognition and its association with level of personality organization (PO) were examined in 163 patients with severe somatoform disorders (SFDs) and 151 psychiatric (PSA) control patients. Social cognition was measured with the Social Cognition and Object Relations Scale, which assessed both affective and cognitive facets of social cognition....

Patients with severe somatoform disorder (in secondary and tertiary care) typically experience functional impairment associated with physical symptoms and mental distress. Although psychotherapy is the preferred treatment, its effectiveness remains to be demonstrated. To examine the effectiveness of psychotherapy for severe somatoform disorder in s...

Mentalizing in cases of severe medically unexplained symptoms Patients with severe medically unexplained symptoms (MUS) have problems with mentalization: they have difficulty experiencing a connection between physical phenomena and inner states. Therefore a body-centred mentalizing focus is of great importance during an intensive clinical/day treat...

Background: Insufficient response to monotreatment for depression is a common phenomenon in clinical practice. Even so, evidence indicating how to proceed in such cases is sparse. Methods: This study looks at the second phase of a sequential treatment algorithm, in which 103 outpatients with moderately severe depression were initially randomized...

This paper provides a systematic review of extant research concerning the association between level of personality organization (PO) and psychotherapy response. Psychotherapy studies that reported a quantifiable association between level of PO and treatment outcome were examined for eligibility. Based on stringent inclusion and exclusion criteria,...

Theoretisch is een sterk verband aannemelijk tussen onveilige gehechtheid en somatisch onbegrepen lichamelijke klachten (SOLK), waarbij de samenhang verklaard zou kunnen worden door beperkingen in het vermogen te mentaliseren, door een verhoogde reactiviteit van het autonoom zenuwstelsel (ANS) gepaard gaande met een verhoogde perceptie van lichamel...

In this study, we investigated the relationships between features of personality organization (PO) as assessed by theory driven profiles of the Dutch Short Form of the MMPI (DSFM; Luteijn & Kok, 1985) and 2 self-report measures of personality pathology, that is, the Dutch Inventory of Personality Organization (Berghuis, Kamphuis, Boedijn, & Verheul...

The relationship between the psychodynamic concept of personality organization (PO) and Young’s cognitive model of personality pathology was studied in a sample of 117 patients that were referred to Schema Focused Therapy for severe personality pathology. Principal Component Analysis was used to reduce the number of Early Maladaptive Schemas (EMSs)...

We investigated the validity of theory driven profile interpretation of the MMPI (Hathaway & McKinley, 194337. Hathaway , S. R. and McKinley , J. C. 1943. The Minnesota Multiphasic Personality Inventory, Minneapolis: University of Minnesota Press. View all references) Dutch Short Form (DSFM; Eurelings-Bontekoe, Onnink, Williams, & Snellen, 200827...

Depressed patients randomized to psychotherapy were compared with those who had been chosen for psychotherapy in a treatment algorithm, including addition of an antidepressant in case of early nonresponse. There were no differences between randomized and by-preference patients at baseline in adherence and outcome. About half of the early nonrespond...

Volgens Michael Stone (1987) is het ziektebegrip ‘borderline’ vaag en elke poging om het begrip nauwkeuriger te definiëren zou tegen de (linguïstische) natuur van de definitie ingaan en het zelfs als diagnostische categorie uitroeien. Ingenhoven (1990) vraagt zich af of de borderline persoonlijkheidsstoornis zoals gedefinieerd in de DSM-III-R (APA,...

To examine the efficacy and speed of action of short-term psychodynamic supportive psychotherapy (SPSP) in comparison to pharmacotherapy (PhT) in the acute treatment of depression. This study reported on the first 8 weeks of a treatment algorithm for depression. 70 patients with a depressive episode according to DSM-IV were randomized to PhT, 71 pa...

New developments in the treatment of borderline personality disorder? A comparative analysis and implications for future research This article provides an overview of current treatments of borderline personality disorder that have been systematically studied in randomized controlled trials: Mentalization-based treatment (MBT), Schema-focused thera...

Epidemiological studies over the last decade have supplied growing evidence of an association between urbanization and the prevalence of psychiatric disorders. Our aim was to examine the link between levels of urbanization and 12-month prevalence rates of psychiatric disorders in a nationwide German population study, controlling for other known ris...

Gender differences in depression are usually associated with prevalence, severity, and sometimes with specific syndromes or subtypes. However, a lack of differentiation exists between these factors. To disentangle depression severity and the specific items endorsed by men and women and thus explore the presence of gender-specific subtypes. A group...

Het psychodynamische gedachtegoed bestaat uit een rijk palet aan diverse stromingen. De Wolf (1998) noemt drie hoofdstromingen: het driftmodel, het objectrelatiemodel en de zelf-psychologie. De ego-psychologie plaatst hij binnen het driftmodel. Zoals wel vaker gebeurt, noemt hij de Franse traditie apart en dan alleen de bijdragen van Lacan. Wij lat...