Depression during pregnancy and after the birth of a child is highly prevalent and results in a considerable reduction in quality of life, social functioning (Drury et al., 2016), maternal functioning (O’Hara & McCabe, 2013). It can also have severe consequences in children, including poor cognitive, emotional, behavioral, and physical outcomes (Goodman et al., 2011; O’Hara & McCabe, 2013). Although several meta-analyses have examined the effects of psychological treatments of perinatal depression, they have all...

This project concerns a scenario study whereparticipants are asked to imagine a situation in which they receive gossip from a friend about an acquaintance of their friend, who they do not know. The gossip varies on two dimensions in 3x3 full-factorial design. First, the gossip describes the acquaintance as either having recovered from infection with the Coronavirus, as currently infected (symptomatic) with the Coronavirus, or provides no information on infection with the Coronavirus. Secondly, the...

Background. The number of trials on psychotherapies for adult depression is very large and is quickly growing. Because of this large body of knowledge, it is important that the results of these studies are summarized and integrated in meta-analytic studies. More than a decade ago we developed a meta-analytic database of these trials, which was updated yearly through systematic literature searches. Recently, we developed a new version of this meta-analytic database, built on the systems...

Suicidal ideation and behavior are a major mental health problem worldwide. Many individuals at risk of suicide do not receive treatment. In recent years, low-threshold internet- and mobile-based interventions for suicidality have been developed. Current meta-analyses suggest that they might reduce suicidal ideation. However, they found small effect sizes and it remains unclear whether specific subgroups experience beneficial or harmful effects. Therefore, we will conduct an individual patient data meta-analysis (IPD-MA) to establish the effectiveness...

Autism is a heterogeneous condition and treatment options vary. This study will investigate whether differing characteristics/profiles of children with autism are linked to diversity in treatment choice. Research suggests that the factors that influence parents’ decision-making about treatment change over time, starting when the child is first diagnosed (Edwards et al., 2018). The use of most treatments decrease with age, while psychotropic medication increases with age (Mire et al., 2015). Children with more severe autism...

Chronic depression and treatment-resistant depression are highly important from a clinical perspective. Despite this clinical relevance, relatively few trials have examined the effects of psychological interventions and only a limited number of meta-analyses of these trials have been conducted. No recent meta-analysis has focused on the effects of psychotherapies for chronic and treatment-resistant depression compared with control conditions (care-as-usual, waitlist, pill placebo, others). We decided to conduct a new meta-analysis of psychotherapies for chronic and...

This systematic review aims to summarise the physical demands of tennis across the different court types, performance level and sex of the players, by reviewing the scientific information on this topic and synthesising the data currently available using a meta-analysis.

Ever since Main et al. (1985)’s discovery that parents’ attachment representations are associated with parent-child attachment, the intergenerational transmission of attachment has intrigued researchers across the globe. Research has focused on sensitive caregiver behavior as the mediating mechanism through which a parent’s attachment state of mind expresses itself leading to child-parent attachment, but meta-analytic evidence showed that sensitive responsiveness explained only 25% of the intergenerational association (Van IJzendoorn, 1995; Verhage et al., 2016). Solving this...

A pre-registration for a project in which we will study the influence of individual differences in IQ on individual differences in psychopathology, in a genetically informative design.

The World Health Organization (WHO) developed several scalable psychological interventions delivered by trained and supervised non-specialists to reduce psychological distress in communities affected by adversity (Dawson et al., 2015). These interventions are potentially cost-effective solutions for settings where access to mental health services is low. Examples of such interventions are Problem Management Plus (PM+) and Step-by-Step (SbS). Prior research on PM+ in violence-affected settings in Kenya and Pakistan showed that the intervention is related to...

Background. The number of trials on psychotherapies for adult depression is very large and is quickly growing. Because of this large body of knowledge, it is important that the results of these studies are summarized and integrated in meta-analytic studies. More than a decade ago we developed a meta-analytic database of these trials, which was updated yearly through systematic literature searches. Recently, we developed a new version of this meta-analytic database, built on the systems...

We are conducting this study to examine how social experiences in dyadic interaction facilitate further cooperation in groups. More specifically, this study aims to investigate how the interaction between two partners in a repeated prisoners dilemma predicts their cooperation in a later public goods game with three more participants. The research question that drives our study is does cooperative experience in dyadic interaction facilitates cooperation in groups if you “bring your partner”?

Mental disorders are common in college students, yet students who need mental health support usually do not utilize mental health services (Auerbach et al., 2018). Although evidence-based psychological interventions can be effective in college students, only a small proportion of students with mental disorders are seeking help from mental health professionals (Ebert et al., 2019; Eisenberg, Hunt, & Speer, 2012). Several studies have been conducted to understand the help-seeking behaviors of college students, barriers, and...

The privacy paradox suggests that privacy concerns do not relate to privacy-related behavior. Although it has inspired numerous studies, findings remain inconclusive. Some of the inconsistencies in published findings may be explained by a strong heterogeneity in the conceptual and analytical choices that researchers implement when investigating the privacy paradox. Based on representative survey data of the 27 EU member states (2011: n = 8,962; 2015: n = 10,526; 2019: n = 11,428), I investigated...

Social dysfunction is one of the most common signs of major neuropsychiatric disorders. The Default Mode Network (DMN) is crucially implicated in both psychopathology and social dysfunction, although the transdiagnostic properties of social dysfunction remains unknown. As part of the pan-European PRISM (Psychiatric Ratings using Intermediate Stratified Markers) project, we explored cross-disorder impact of social dysfunction on DMN connectivity. We studied DMN intrinsic functional connectivity in relation to social dysfunction by applying Independent Component Analysis...

VU Amsterdam, Netherlands (1); EBN, Netherlands, The (2) Anhydrites Carbonates of the Leine formation, the third evaporitic cycle of the Zechstein group, are widely distributed in the Southern Permian basin. These strata are often drilled through by wells targeting underlying Rotliegend gas prospects. The ZEZ3C/A members constitute brittle rocks sandwiched by the ductile halites from the underlying ZEZ2H and the overlying ZEZ3H. The brittle sheet is frequently rifted (boudinage) and the resulting fragments are often...

Wood et al. (2012) found that belief in one conspiracy theory is positively correlated with belief in a second contradictory conspiracy theory. For instance, participants were asked to what degree they believed Princess Diana was murdered and, alternatively, faked her own death. Based on this positive correlation, they conclude that those who believe in one conspiracy theory are more likely to also believe a contradictory conspiracy theory. However: participants who disagree with both conspiracy theories...

According to the self-expansion model, people are motivated to acquire new resources and experiences, relationships are one good source for this process (Aron, Lewandowski, Mashek, & Aron, 2013) However, when the expansion period decelerates, relational boredom would occur (Aron & Aron, 1986) but little is known about the influence of relational boredom on close relationships. In this study, we will examine the relationship between relational boredom and negative emotional outcomes such as depression and life...

In this online study (hosted by 123test.com), participants will be asked to provide personality self-reports and respond verbally to a series of personality questions in an online video interview, while their responses in the latter task are video recorded. Machine learning techniques will be applied to test whether self- and observer-reported personality scores can be predicted from video interviews. Three separate modalities of the video data will be extracted and tested: verbal features (the words...