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Author: Hans M Koot (162)


Jan
2018

Emotional and behavioral problems (EBP) during childhood and adolescence are a common concern for parents and mental health stakeholders. However, little has been documented about their prevalence in Kenyan children and adolescents. This study aimed to close this gap.

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Dec
2017

Holding a low social position among peers has been widely demonstrated to be associated with the development of depressive and aggressive symptoms in children. However, little is known about potential protective factors in this association. The present study examined whether increases in children's prosocial behavior can buffer the association between their low social preference among peers and the development of depressive and aggressive symptoms in the first few school years.

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Dec
2017

For many women, pregnancy-related sleep disturbances and pregnancy-related anxiety change as pregnancy progresses and both are associated with lower maternal quality of life and less favorable birth outcomes. Thus, the interplay between these two problems across pregnancy is of interest. In addition, psychological resilience may explain individual differences in this association, as it may promote coping with both sleep disturbances and anxiety, and thereby reduce their mutual effects.

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Nov
2017

Although adolescents' prosocial behavior is related to various positive outcomes, longitudinal research on its development and predictors is still sparse. This 6-wave longitudinal study investigated the development of prosocial behavior across adolescence, and examined longitudinal associations with perspective taking and empathic concern. Participants were 497 adolescents (M13.

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Nov
2017

A central assumption of identity theory is that adolescents reconsider current identity commitments and explore identity alternatives before they make new commitments in various identity domains (Erikson, 1968; Marcia, 1966). Yet, little empirical evidence is available on how commitment and exploration dynamics of identity formation affect each other across adolescence at the within-person level. Therefore, the current study (N = 494, Mage Time 1 = 13.

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Jul
2017

Despite evidence of a positive link between depressive symptoms and violent behaviors, the pathways underlying this longitudinal association remain unknown. Depressive symptoms might drive and reinforce victimization which in turn could increase risk of individuals becoming violent towards others. Thus, we tested whether victimization mediated the link between depressive symptoms and violent behaviors using a 6-year longitudinal study of a community sample of adolescents.

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Sep
2017

Empathy plays a key role in maintaining close relationships and promoting prosocial conflict resolution. However, research has not addressed the potential emotional cost of adolescents' high empathy, particularly when relationships are characterized by more frequent conflict. The present 6-year longitudinal study (N = 467) investigated whether conflict with parents predicted emotion dysregulation more strongly for high-empathy adolescents than for lower-empathy adolescents.

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Jan
2018

A substantive body of literature suggests that those involved in bullying as perpetrators but particularly victims are at greater risk for psychological maladjustment. In comparison, relatively little is known about associations between bullying-victimization and perpetration and mastery of early adult tasks in domains including romantic relationships, education, work, financial competence, and conduct. These links were tested using data from two Dutch cohorts (RADAR-young, n = 497, 43% girls; TRAILS, n = 2230, 51% girls) who reported on victimization and perpetration at age 11 (TRAILS) and 13 (RADAR-young) and mastery of developmental tasks in early adulthood.

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Sep
2016

Important linkages between daily mood and identity formation have been theorized, but have not been empirically tested as of yet. This study provided a first examination of these linkages within individuals (N = 392; 55.1% boys; Mat T1 = 13.

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Jun
2017

We examined cross-cultural differences in (1) sibling power balance and (2) the associations between sibling power balance and internalizing and externalizing problems in three separate cross-cultural studies (early childhood, late childhood, and adolescence). The early childhood samples consisted of 123 Turkish and 128 Dutch mothers (mean age for children was 4.9 years).

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Jul
2017

This RCT investigated whether the effect of a Theory of Mind (ToM) intervention for children with ASD was moderated by parental education level and employment, family structure, and parental ASD. Children with autism aged 8-13 years (n = 136) were randomized over a waitlist control or treatment condition. At posttest, children in the treatment condition had more ToM knowledge, showed fewer autistic features, and more ToM-related behavior than children in the control condition.

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Jul
2017

The Pregnancy Experience Scale - Brief version (PES-Brief) assesses the frequency and intensity of the hassles and uplifts of pregnancy. This study aimed to assess the psychometric properties of the Dutch PES-Brief-Beleving van Zwangerschap Schaal - verkorte versie (BZS-K)-in a sample of healthy Dutch pregnant women. Participants (n=115) completed questionnaires twice during pregnancy, within a three-week interval.

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Jun
2017

This study investigated 3 developmental pathways involving the peer environment that may explain how certain temperamental dispositions in childhood may become manifested in later antisocial behavior and substance use. A total of 411 (52% boys) Canadian children were followed annually from ages 6 to 15 years. The study tested whether the temperamental traits approach, negative reactivity and attention (assessed at ages 6-7 years), were associated with overt antisocial behavior, covert antisocial behavior and illicit substance use (assessed at ages 14-15 years), via poor social preference among peers, inflated social self-perception and antisocial behavior of peer-group affiliates (assessed throughout ages 8-13 years).

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Oct
2017

Using data from 2 large and overlapping cohorts of Dutch adolescents, containing up to 7 waves of longitudinal data each (N = 2,230), the present study examined Big Five personality trait stability, change, and codevelopment in friendship and sibling dyads from age 12 to 22. Four findings stand out. First, the 1-year rank-order stability of personality traits was already substantial at age 12, increased strongly from early through middle adolescence, and remained rather stable during late adolescence and early adulthood.

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Aug
2017

Differences in the social limitations of girls compared to boys on the autism spectrum are still poorly understood. Impaired social-emotional reciprocity is a core diagnostic criterion for an autism spectrum disorder. This study compares sex differences in reciprocal behaviour in children with autism spectrum disorder (32 girls, 114 boys) and in typically developing children (24 girls, 55 boys).

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Dec
1969

Identity formation is one of the key developmental tasks in adolescence. According to Erikson (1968) experiencing identity uncertainty is normative in adolescence. However, empirical studies investigating identity uncertainty on a daily basis are lacking.

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Dec
1969

In adolescence, youth antisocial behaviors reach a peak. Parents can use different strategies, such as parental solicitation and control, to monitor their children's activities and try to prevent or reduce their antisocial behaviors. However, it is still unclear if, and for which adolescents, these parental monitoring behaviors are effective.

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Dec
1969

This four-year longitudinal study attempted to test person-environment interaction theory and biological sensitivity theory by assessing whether individuals' biological stress activity CAR(Cortisol Awakening Response Area Under the Curve with respect to ground) moderates the effects of neighbourhood density on the development of adolescent externalizing problem behaviours. Participants were 358 Dutch adolescents with a mean age of 15 years at the first measurement. Our analyses showed that CARmoderated the effects of neighbourhood density on the level of parent-reported delinquency and aggression and adolescent self-reported delinquency.

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Dec
1969

Early recognition of childhood mental-health problems can help minimise long-term negative outcomes. Recognition of mental-health problems, needed for referral and diagnostic evaluation, is largely dependent on health-care professionals' (HCPs) judgement of symptoms presented by the child. This study aimed to establish whether HCPs recognition of mental-health problems varies as a function of three child-related factors (type of problem, number of symptoms, and demographic characteristics).

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Sep
2016

Egocentric bias is a core feature of autism. This phenomenon has been studied using the false belief task. However, typically developing children who pass categorical (pass or fail) false belief tasks may still show subtle egocentric bias.

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Dec
1969

The purpose of this study was to examine reciprocal associations between identity processes (commitment, in-depth exploration, and reconsideration of commitment) and dimensions (support, negative interaction, and power) of maternal, paternal, and sibling relationships. A total of 497 Dutch families including 14-years-old adolescents (56.9% males), their fathers, mothers, and siblings, for a total of 1,988 respondents, participated in a five-wave longitudinal study.

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Jan
2017

Adolescence is an important time for emotional development. Recently, daily diary methods are increasingly employed in research on emotional development and are used to explore the development of and sex differences in emotions during adolescence. However, before drawing conclusions about sex differences and developmental trends, one needs to ensure that the same construct is measured across sex and time.

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Dec
1969

Adolescents' behavior is often a matter of concern, given their increased likelihood of enacting antisocial behaviors, which cause disruptions in the social order and are potentially harmful for the adolescents themselves and for the people around them. In this six-wave longitudinal study we sought to examine the interplay among maternal empathy, multiple indicators of mother-adolescent relationship quality (i.e.

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Dec
1969

The current study examined mean level and change in extraversion and neuroticism across adolescence in relation to physiological stress reactivity to social evaluation. Adolescents (n=327) from the Dutch general population reported on personality measures at five annual assessments. At age 17 years, adolescents participated in a psychosocial stress procedure characterized by social evaluation during which cortisol, heart rate, pre-ejection period (PEP) and heart rate variability were assessed.

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Apr
2016

The quality of children's life is important both as an investment in the future of our society and because children constitute an important group of themselves and deserve to experience well-being presently. Quality of life (QOL) has been conceptualized and studied in children for several decades, but with disparate approaches that have rarely been discussed jointly with application to children in general. Here we describe and critically examine the three main approaches to children's QOL: health-related QOL (HRQOL), social indicators, and subjective well-being (SWB).

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Feb
2016

Adolescents' development of two empathy dimensions, affective empathic concern and cognitive perspective taking, may be associated with shifts towards more constructive behaviors in conflict with parents. This six-year longitudinal study (ages 13-18) used multivariate latent growth curve modeling to investigate correlations between the developmental trajectories of adolescents' (N = 497) empathic dispositions and trajectories of their conflict behaviors towards both parents. There were some similarities between the associations of both empathy dimensions with conflict behaviors.

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Dec
2016

The present study examined whether the relation of parental solicitation, parental control, and child disclosure with adolescent alcohol and cannabis use is similar for native and non-Western immigrant Dutch adolescents.
Questionnaire data from two study-samples were used with a combined sample of 705 adolescents (mean age 16.2 years; 47.

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Feb
2016

This 4-year longitudinal study examined over-time associations between adolescents' educational identity, perceived best friends' balanced relatedness, and best friends' educational identity. Adolescents (N = 464, Mage = 14.0 years at baseline, 56.

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Apr
2016

Egocentric bias is a core feature of autism. This phenomenon has been studied using the false belief task. However, typically developing children who pass categorical (pass or fail) false belief tasks may still show subtle egocentric bias.

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Dec
1969

Expanded efforts to detect and treat depression among college students, a peak period of onset, have the potential to bear high human capital value from a societal perspective because depression increases college withdrawal rates. However, it is not clear whether evidence-based depression therapies are as effective in college students as in other adult populations. The higher levels of cognitive functioning and IQ and higher proportions of first-onset cases might lead to treatment effects being different among college students relative to the larger adult population.

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Dec
2015

The present study assessed the unique versus cumulative effects of physical and sexual assault, on patterns of substance-use in adolescents. It was hypothesized that experiencing a single assault (physical or sexual) when compared with exposure to both physical and sexual assault would be more strongly related to membership of polysubstance use classes. From the National Survey of Adolescents-1995 (N= 4023) 918 adolescents (age range=12-17 years, M=14.

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Dec
2015

This study explored the development of mood variability in 474 Dutch adolescents (56.8% male, 90.1% medium to high socioeconomic status) from a community sample, followed from ages 13 to 18 years.

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Jun
2016

In expressed emotion (EE) theory, it is held that high EE household environments enhance adolescent psychopathological distress. However, no longitudinal study has been conducted to examine if either the mother's EE or the adolescent's perception of EE predicts adolescent internalizing and externalizing symptom dimensions (an EE effect model) or vice versa (psychopathological effect model) together in one model. To unravel the reciprocal influences of maternal and adolescent perceived EE to adolescent internalizing and externalizing symptom dimensions, we tested two (i.

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Feb
2016

We compared self-presentation abilities of 132 children and adolescents with autism spectrum disorders (ASD) to those of 41 typically developing (TD) peers, and examined the potential link with their social motivation and perspective taking. Participants introduced themselves to an interviewer in a baseline condition (without incentive) and a self-promotion condition (with incentive). Children with ASD (6-12 years) were just as likely as or even more likely than TD children to highlight personal characteristics that would increase their chances of obtaining the incentive.

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Dec
1969

The aim of this study was to assess measurement invariance of adolescents' daily reports on identity across time and sex. Adolescents (N = 497; mean age = 13.32 years at Time 1, 56.

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Oct
2015

We investigated whether intervention effects of FRIENDS for Life, a school-based prevention program for children with anxiety or depression symptoms, were maintained over a period of 12 months after the intervention in a naturalistic setting.
We used a quasi-experimental design, with 339 children in the intervention group and 157 in the control group (aged 8-13 years) in schools in Amsterdam, the Netherlands. We collected self-, teacher, and peer reports of anxiety and depression scores before and after intervention, and 6 and 12 months after intervention, from 2010 to 2012.

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Jan
2016

This study assessed the developmental links between children's working memory development and their relations with teachers and peers across 2 years of kindergarten and early elementary school. Kindergarten and first grade children, N = 1109, 50% boys, were followed across 2 school-years. Children were assessed across 3 waves, in the fall and spring of the first school-year (within school-year), and finally in the spring of the second school-year.

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Jun
2015

Although anxiety and, to a lesser extent, depression are highly prevalent in children, these problems are, difficult to identify. The Revised Anxiety and Depression Scale (RCADS) assesses self-reported symptoms of anxiety and depression in youth.
The present study examined the factor structure, internal consistency, short-term stability, and validity including sensitivity to change of the RCADS in a multi-ethnic urban sample of 3636 Dutch children aged 8 to 13 years old.

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Dec
2015

The aims of the present study were to identify discrete classes of adolescents based on their reporting of emotional abuse, physical abuse, sexual abuse, emotional neglect, and physical neglect of several levels of severity using a person-centered analytic approach (i.e., latent class analysis), and to compare the latent classes on 17 dimensions of personality pathology.

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Feb
2016

Cognitive impulsivity may increase children's risk of developing delinquent behavior. However, the influence of cognitive impulsivity may depend on social environmental risk factors. This study examined the moderating effect of late childhood parenting behaviors and peer relations on the influence of children's cognitive impulsivity on delinquency development across adolescence and early adulthood, while taking possible interactions with intelligence also into account.

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Jul
2015

The peer environment is among the most important factors for children's behavioral development. However, not all children are equally influenced by their peers, which is potentially due to their genetic make-up. The dopamine receptor D4 gene (DRD4) is a potential candidate gene that may influence children's susceptibility to the peer environment.

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Oct
2016

The purpose of this study was twofold: (a) to disentangle patterns of change and stability in self-concept clarity (SCC) in adolescents and in their parents and (b) to examine processes of intergenerational transmission of SCC in families with adolescents. Participants were 497 Dutch families including the father (baseline Mage  = 46.74), the mother (baseline Mage  = 44.

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Dec
1969

This study examined interrelations of trait and state empathy in an adolescent sample. Self-reported affective trait empathy and cognitive trait empathy were assessed during a home visit. During a test session at the university, motor empathy (facial electromyography), and self-reported affective and cognitive state empathy were assessed in response to empathy-inducing film clips portraying happiness and sadness.

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Dec
2015

Limited perspective taking or "Theory of Mind" (ToM) abilities are a core deficit of autism, and many interventions are aimed to improve ToM abilities. In this study, we investigated the effectiveness of a ToM treatment for children with autism spectrum disorders (ASD) and, for the first time, the moderating roles of social interaction style (SIS) and disruptive behavior (DB), to determine which children are most likely to respond to this intervention. The trial protocol is registered at www.

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Dec
2015

Testosterone and cortisol have been proposed to jointly regulate aggressive behavior. However, few empirical studies actually investigated this joint relation in humans, and reported inconsistent findings. Also, samples in these studies were small and/or specific, and consisted largely of males.

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May
2015

Proactive and reactive functions of aggression are thought to manifest through different familial and emotional processes, even though they often co-occur. We investigated direct and indirect pathways through which maternal criticism and emotion regulation (ER) difficulties relate to reactive and proactive aggression in adolescence. Further, we examined how maternal criticism and emotion dysregulation interrelate, both concurrently and over time.

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Jul
2015

Poor reciprocity is a defining feature of an autism spectrum disorder (ASD). In the current study, we examined the reliability and validity of the Interactive Drawing Test (IDT), a new instrument to assess reciprocal behavior. The IDT was administered to children and adolescents with ASD (n = 131) and to a typically developing group (n = 62).

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Jan
2015

The present study examined (1) the association between changes in perceived parental control and support from age 13 to 15 and early onset of cannabis use (before age 16), and (2) whether personality modifies the association between a decline in perceived parental control and support and early onset of cannabis use.
Objectives were studied using data (three waves covering two years) from 444 Dutch adolescents participating in the Research on Adolescent Development and Relationships (RADAR) study. Adolescents had a mean age of 13 years at baseline, and reported at each wave about perceived parental control and support.

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Apr
2015

Discrepancies between children and partners (e.g., parents, friends, peers) in reports of social functioning and self-other relationships are common in clinical practice and in research.

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