Publications by authors named "Cillessen A"

Friends' influence may importantly contribute to the development of adolescent disordered eating behaviors. However, little is known about the influence of friends on loss of control eating. This study investigated whether friend-reported loss of control eating was associated with changes in adolescents' own loss of control eating 1 year later and tested whether adolescents with lower self-esteem, higher fear of negative evaluation, and higher body dissatisfaction were more susceptible to friends' influence.

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Little is known about the unique effects of (un)popularity on body image and the characteristics influencing these effects. The goals of this study were to examine (1) the longitudinal associations of adolescents' (un)popularity with weight perception and dieting, (2) whether (dis)liking, self-esteem, and gender moderated these associations. Participants were 1697 Dutch adolescents (M = 14.

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Students around the globe still experience bullying daily. Teachers play a key role in supporting victimized students and they could do so using their classroom seating arrangement. Common teacher strategies are to separate victims and bullies and to seat victims close to supportive others, but research has not examined whether these strategies support victims' wellbeing.

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Stereotypes can exert a powerful influence on our interactions with others, potentially leading to prejudice when factual evidence is ignored. Here, we identify neuroanatomical and developmental factors that influence the real-time integration of stereotypes and factual evidence during live social interactions. The study uses precisely quantified communicative exchanges in a longitudinal cohort of seventeen-year-olds followed since infancy, testing their ability to moderate stereotype tendencies toward children as contrary evidence accumulates.

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Transitioning back to work after maternity leave is increasingly common. While differences exist, for many mothers this transition represents a stressor. This study aimed to define the construct of maternal postpartum work resumption stress and develop and validate a self-report measure in a low-risk sample of Dutch mothers.

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Purpose: To classify CVI subtypes and compare the added value of an extensive test battery over a limited test battery in subtype classification of cerebral visual impairment (CVI) in children.

Methods: Seventy-five children with a clinical diagnosis of CVI (median [IQR] age: 9 [7-12] years) were identified from the medical records. The extensive test battery included visual acuity, contrast sensitivity, ocular alignment, eye movement analysis, visual field analysis, optic nerve head evaluation, and evaluation of visual perception.

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Objective: Theories propose that low self-esteem and problematic eating behaviors (PEBs) negatively impact each other. While previous studies suggested bidirectional associations between self-esteem and PEBs, they did not separate within-person from between-person associations. Therefore, this prospective study investigated the within-person bidirectional associations between self-esteem and four PEBs in adolescence, while accounting for between-person differences.

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The current studies addressed the associations between attachment representations with parents and a single best friend, intimacy behaviors (self-disclosure and support-seeking), and friendship quality in emerging adulthood, using the actor-partner interdependence mediation model (APIMeM). Study 1 ( = 186 dyads) examined whether attachment to parents predicted friendship quality, and whether this was mediated by attachment to their best friend. More avoidance or anxiety with parents predicted lower friendship quality, which was mediated by avoidance or anxiety with their best friend.

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Dan Olweus pioneered research on school bullying and identified the importance of, and risk factors associated with, bullying and victimization. In this paper, we conduct a narrative review of the critical notion of power within bullying. Specifically, we discuss Olweus's definition of bullying and the role of a power imbalance in distinguishing bullying behavior from other forms of aggression.

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A paradox of testosterone effects is seen in adolescents versus adults in social emotional approach-avoidance behavior. During adolescence, high testosterone levels are associated with increased anterior prefrontal (aPFC) involvement in emotion control, whereas during adulthood this neuro-endocrine relation is reversed. Rodent work shows that, during puberty, testosterone transitions from a neuro-developmental to a social-sexual activating hormone.

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Rationale: The first COVID-19 lockdown impacted the social life and behaviors of university students, such as alcohol use. While previous studies have reported changes in students' alcohol use during the lockdown, knowledge of risk groups like binge drinkers is limited.

Objective: The purpose of this study is to investigate how the first lockdown impacted the alcohol use of university students who were regular binge drinkers before the lockdown.

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A painful experience affecting many children is social exclusion. The current study is a follow-up study, investigating change in neural activity during social exclusion as a function of peer preference. Peer preference was defined as the degree to which children are preferred by their peers and measured using peer nominations in class during four consecutive years for 34 boys.

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This study investigated the longitudinal bidirectional associations between likeability, popularity, fear of negative evaluation, and social avoidance, to aid in preventing the negative consequences and persistent trajectories of low social status and heightened social anxiety. In total, 1741 adolescents in grades 7-9 participated at 3 yearly waves. A self-report questionnaire measured fear of negative evaluation.

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Deployment-related posttraumatic stress disorder (PTSD) impacts social functioning in families. Therefore, it is important to examine the factors that contribute to social functioning in families that are confronted with deployment-related PTSD. The goal of this study was to assess the association between PTSD symptom severity and social functioning using self-report questionnaires in an outpatient veteran sample and to test the mediating roles of emotion regulation (Study 1, N = 100) and mentalization (Study 2, N = 38).

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Temperament involves stable behavioral and emotional tendencies that differ between individuals, which can be first observed in infancy or early childhood and relate to behavior in many contexts and over many years. One of the most rigorously characterized temperament classifications relates to the tendency of individuals to avoid the unfamiliar and to withdraw from unfamiliar people, objects, and unexpected events. This temperament is referred to as behavioral inhibition or inhibited temperament (IT).

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Awareness that high-status adolescents can be targets of aggression has grown in recent years. However, questions remain about the associations of the confluence of victimization and popularity with adjustment. The current study fills this gap by examining the joint and unique effects of victimization and popularity on aggression and alcohol use.

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The goal of this study was to investigate the transactional link between the affective quality of teacher-student relations and students' externalizing behavior in upper elementary education. We studied teacher support and conflict separately and examined whether associations differed for boys and girls. Data were collected from 1452 Dutch fifth graders (M = 10.

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The aim of this longitudinal study was to investigate emerging adults' mental health and the COVID-19 pandemic, and whether social support from mothers, fathers, and best friends moderated the in mental health. Participants were 98 emerging adults (46% men) who were assessed prior to COVID-19 ( = 20.60 years) and during the first lockdown ( = 22.

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Background: Social support represents a key factor in the development of post-traumatic stress disorder (PTSD). Social cognition - the ability to perceive, interpret, and respond to other people - is considered fundamental in making use of social support. Gaining knowledge on the link between PTSD and social cognition is therefore essential.

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Previous studies have called attention to the fact that popular youth are not immune to peer victimization, suggesting there is heterogeneity in the popularity of victims. Yet, no study to date has determined whether victims with different levels of popularity status can be identified using person-oriented analysis. Such analysis is critically needed to confirm the existence of popular victims.

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Article Synopsis
  • The study explored how loneliness changes as adolescents grow up (ages 9-21) and its impact on their mental health.
  • Researchers identified three patterns of loneliness: "stable low," "high decreasing," and "low increasing," with the majority experiencing stable low loneliness.
  • Higher loneliness levels in adolescence linked to increased risks of depression, lower self-esteem, and for those with "low increasing" loneliness, higher anxiety in young adulthood.
  • Overall, the findings suggest that loneliness during teenage years can lead to significant mental health challenges later on.
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Background: Students with intellectual disabilities (ID) exhibit increased rates of problem behaviors compared to those without ID.

Aims: Given the evidence of peer influence in typical development, we examined the impact of classmates' characteristics on problem behaviors of students with ID. We expected higher levels of problem behaviors in special needs classrooms will influence individual development of such behaviors.

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Although prior research has indicated that peer norms for aggression enhance the spread of aggression in classrooms, it is unclear to date how these norms relate to students' classroom climate perceptions and school adjustment. Aggressive descriptive norms reflect the average aggression of all students in classrooms, whereas aggressive popularity norms represent the extent to which aggressive behavior relates to popularity among peers. This study examined the role of aggressive descriptive and popularity norms in the classroom climate perceptions (cooperation, conflict, cohesion, isolation) and school adjustment (feelings of belonging; social, academic, and general self-esteem) of popular, well-liked, and victimized children.

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In two independent studies, we aimed to examine the extent to which teacher and peer nominations of loneliness are associated with children's and adolescents' self-reported loneliness, respectively. Additionally, we examined whether loneliness nominations from teachers and peers were informative above and beyond peer status and social behaviors associated with loneliness. In Study 1 ( = 1594, = 9.

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