Reciprocity in autistic and typically developing children and adolescents with and without mild intellectual disabilities.

The assessment of autism in individuals with mild intellectual disabilities (MID) is complicated because of the overlap between autistic traits and intellectual limitations. Impaired social emotional reciprocity is a core diagnostic criterion for autism. However, it is unknown whether reciprocal behaviour differs between MID individuals with or without an autism spectrum disorder (ASD). This study explored differences in reciprocal behaviour of 35 children and adolescents with MID (intelligence quotient 50-85): 15 with ASD (ASD-MID) and 20 with typical development (TD-MID) using the Interactive Drawing Test (IDT). ASD-MID participants showed a lower quality of reciprocal behaviour compared with TD-MID participants. The difference in quality of reciprocal behaviour between ASD-MID and TD-MID participants was not significantly related with Peabody Picture Vocabulary Test scores and thus not attributable to verbal capacity. The IDT is likely to reflect the child's inclination to display reciprocal behaviour in everyday situations, as its scale scores were meaningfully associated with the level of social cognition assessed with the Social Responsiveness Scale. Thus, the IDT seems well suited for measuring impairments in reciprocal behaviour in children and adolescents with MID.

The role of stress reactivity in the long-term persistence of adolescent social anxiety symptoms.

Social Anxiety Disorder (SAD) symptoms demonstrate a marked persistence over time, but little is known empirically about short-term processes that may account for this long-term persistence. In this study, we examined how self-reported and physiological stress reactivity were associated with persistence of SAD symptoms from early to late adolescence. A community sample of 327 adolescents (56% boys, Mage=13.01 at T1) reported their SAD symptoms for 6 successive years and participated in a public speaking task, during which self-reported (i.e., perceived nervousness and heart rate) and physiological (i.e., cortisol and heart rate) measures of stress were taken. Overall, our results point to a developmental process in which adolescents with a developmental history of higher SAD symptoms show both heightened perceived stress reactivity and heart rate reactivity, which, in turn, predict higher SAD symptoms into late adolescence.

A comparison of children and adolescent's self-report and parental report of the PedsQL among those with and without autism spectrum disorder.

PURPOSE: Children and adolescents with autism spectrum disorders (ASD) are understood to experience a reduced quality of life compared to typically developing (TD) peers. The evidence to support this has largely been derived from proxy reports, in turn which have been evaluated by Cronbach's alpha and interrater reliability, neither of which demonstrate unidimensionality of scales, or that raters use the instruments consistently. To redress this, we undertook an evaluation of the Pediatric Quality of Life Inventory™ (PedsQL), a widely used measure of children's quality of life. Three questions were explored: (1). do TD children or adolescents and their parents use the PedsQL differently; (2). do children or adolescents with ASD and their parents use the PedsQL differently, and (3). do children or adolescents with ASD and TD children or adolescents use the PedsQL differently? By using the scales differently, we mean whether respondents endorse items differently contingent by group. METHODS: We recruited 229 children and adolescents with ASD who had an IQ greater than 70, and one of their parents, as well as 74 TD children or adolescents and one of their parents. Children and adolescents with ASD (aged 6-20 years) were recruited from special primary and secondary schools in the Amsterdam region. Children and adolescents were included based on an independent clinical diagnosis established prior to recruitment according to DSM-IV-TR criteria by psychiatrists and/or psychologists, qualified to make the diagnosis. Children or adolescents and parents completed their respective version of the PedsQL. RESULTS: Data were analysed for unidimensionality and for differential item functioning (DIF) across respondent for TD children and adolescents and their parents, for children and adolescents with ASD and their parents, and then last, children and adolescents with ASD were compared to TD children and adolescents for DIF. Following recoding the data, the unidimensional model was found to fit all groups. We found that parents of and TD children and adolescents do not use the PedsQL differently ([Formula: see text] = 64.86, p = ns), consistent with the literature that children and adolescents with ASD and TD children and adolescents use the PedsQL similarly ([Formula: see text] = 92.22, p = ns), though their score levels may differ. However, children and adolescents with ASD and their parents respond to the PedsQL differently ([Formula: see text] = 190.22, p < 0.001) and contingently upon features of the child or adolescent. CONCLUSIONS: We suggest this is due to children or adolescents with ASD being less forthcoming with their parents about their lives. This, however, will require additional research to confirm. Consequently, we conclude that parents of high-functioning children with ASD are unable to act as reliable proxies for their children with ASD.

Discrepancies Between Perceptions of the Parent-Adolescent Relationship and Early Adolescent Depressive Symptoms: An Illustration of Polynomial Regression Analysis.

Adolescence is a critical period for the development of depressive symptoms. Lower quality of the parent-adolescent relationship has been consistently associated with higher adolescent depressive symptoms, but discrepancies in perceptions of parents and adolescents regarding the quality of their relationship may be particularly important to consider. In the present study, we therefore examined how discrepancies in parents' and adolescents' perceptions of the parent-adolescent relationship were associated with early adolescent depressive symptoms, both concurrently and longitudinally over a 1-year period. Our sample consisted of 497 Dutch adolescents (57 % boys, M age = 13.03 years), residing in the western and central regions of the Netherlands, and their mothers and fathers, who all completed several questionnaires on two occasions with a 1-year interval. Adolescents reported on depressive symptoms and all informants reported on levels of negative interaction in the parent-adolescent relationship. Results from polynomial regression analyses including interaction terms between informants' perceptions, which have recently been proposed as more valid tests of hypotheses involving informant discrepancies than difference scores, suggested the highest adolescent depressive symptoms when both the mother and the adolescent reported high negative interaction, and when the adolescent reported high but the father reported low negative interaction. This pattern of findings underscores the need for a more sophisticated methodology such as polynomial regression analysis including tests of moderation, rather than the use of difference scores, which can adequately address both congruence and discrepancies in perceptions of adolescents and mothers/fathers of the parent-adolescent relationship in detail. Such an analysis can contribute to a more comprehensive understanding of risk factors for early adolescent depressive symptoms.

A longitudinal biosocial study of cortisol and peer influence on the development of adolescent antisocial behavior.

It is increasingly recognized that in order to understand the complex phenomenon of antisocial behavior, interrelations between biological and social risk factors should be taken into account. In the current study, this biosocial approach was applied to examine the mediating role of deviant peers in longitudinal associations linking the level of hypothalamic-pituitary-adrenal (HPA) axis activity to aggression and rule-breaking. Participants were 425 boys and girls from the general population, who were assessed yearly at ages 15, 16, and 17. As a measure of HPA axis activity, cortisol was assessed at awakening, 30, and 60 min later (the cortisol awakening response, CAR). Participants, as well as their best friend, reported on their own aggressive and rule-breaking behavior, thereby allowing to assess bidirectional influences within friendships. Aggression was only predicted by a decreased cortisol level at awakening, and not by aggressive behavior of their friend. Decreased levels of cortisol at awakening predicted adolescents' rule-breaking, which subsequently predicted increased rule-breaking of their best friend. The latter was only found for adolescents who changed friends, as compared to adolescents with the same friend in every year. Gender differences were not found. These findings suggest that interrelations between biological and social risk factors are different for the development of aggression versus rule-breaking. Furthermore, decreased levels of HPA axis activity may represent a susceptibility to selecting deviant peers.

Assessing diabetes support in adolescents: factor structure of the modified Diabetes Social Support Questionnaire (DSSQ-Friends).

AIMS: To determine the underlying factor structure of friends' enacted support behaviours for adolescents with Type 1 diabetes, confirm it in a second sample, delineate distinctive aspects of friends' support and test the reliability of resulting scale. METHODS: The study included a total of 434 adolescents (54.8% girls), mean age 14.7 years, mean duration of diabetes 6.1 years. RESULTS: Results from the exploratory factor analysis, including data from a random half of the participants revealed a five-factor solution explaining approximately 48.4% of the item variance. The five factors emerged Guidance and Encouragement (13 items; α=0.91), Help in Critical Situations (7 items; α=0.92), Nourishment (11 items; α=0.88), Empathy (6 items; α=0.83) and Help in Exercise (5 items; α=0.76). Confirmatory factor analysis on the remainder of the sample showed good indices of model fit. Comparison of the factor structure across gender and age also presented an excellent fit. In a second-order factor analysis all five factors loaded on one overall factor, Diabetes Social Support-Friends. Construct validity of the resulting scales was supported by predicted associations of Modified Diabetes Specific Support Questionnaire-Friends scale scores with HbA(1c) , treatment adherence and responsibility, and well-being. CONCLUSION: The 42-item Modified Diabetes Specific Support Questionnaire-Friends emerged as a reliable and valid scale for Dutch adolescents with Type 1 diabetes and measures five factors of diabetes-specific support from close friends.

The role of stressful events in the development of behavioural and emotional problems from early childhood to late adolescence.

BACKGROUND: There is growing evidence on the importance of experiences of stressful events in the development of psychopathology. This study aimed to investigate the role of stressful events in the continuity of internalizing and externalizing problems, as well as the cross-influence of these problems from early childhood to late adolescence. METHOD: Data came from a general population sample of 396 children followed from the ages of 3 to 18 years. Parent-ratings of internalizing and externalizing problems at ages 3, 5, 10 and 18 years were used. Parents also reported on the presence of stressful events between the ages of 3 and 5 years, and 5 and 10 years. Adolescent reports on stressful events over the ages of 10-18 years were used. Structural equation models were used to disentangle/analyse the role of stressful events in the development of internalizing and externalizing problems. RESULTS: From the age of 3 years onwards externalizing symptoms predicted experiences of stressful events. In turn, these experiences predicted later externalizing problems. Stressful events also explained part of the continuity of internalizing problems from the age of 10 years onwards, but not during childhood. From childhood onwards, cross-influences from externalizing problems to subsequent internalizing problems were found to run through stressful events. Only in adolescence cross-influences from internalizing problems to externalizing problems were found, again via stressful events. CONCLUSIONS: From childhood onwards to late adolescence, stressful events play a significant role in both the continuity and the co-occurrence of externalizing and internalizing problems. Theoretical and methodological implications of these findings are discussed.

Does visual impairment lead to additional disability in adults with intellectual disabilities?

BACKGROUND: This study addresses the question to what extent visual impairment leads to additional disability in adults with intellectual disabilities (ID). METHOD: In a multi-centre cross-sectional study of 269 adults with mild to profound ID, social and behavioural functioning was assessed with observant-based questionnaires, prior to expert assessment of visual function. With linear regression analysis the percentage of variance, explained by levels of visual function, was calculated for the total population and per ID level. RESULTS: A total of 107/269 participants were visually impaired or blind (WHO criteria). On top of the decrease by ID visual impairment significantly decreased daily living skills, communication & language, recognition/communication. Visual impairment did not cause more self-absorbed and withdrawn behaviour or anxiety. Peculiar looking habits correlated with visual impairment and not with ID. In the groups with moderate and severe ID this effect seems stronger than in the group with profound ID. CONCLUSION: Although ID alone impairs daily functioning, visual impairment diminishes the daily functioning even more. Timely detection and treatment or rehabilitation of visual impairment may positively influence daily functioning, language development, initiative and persistence, social skills, communication skills and insecure movement.

Incidence, types and characteristics of aggressive behaviour in treatment facilities for adults with mild intellectual disability and severe challenging behaviour.

BACKGROUND: Inpatient aggression in treatment facilities for persons with intellectual disability (ID) can have aversive consequences, for co-clients and staff, but also for the aggressors themselves. To manage and eventually prevent inpatient aggressive incidents, more knowledge about their types and characteristics is necessary. METHOD: In four facilities, totalling 150 beds, specialized in the treatment of adults with mild ID or severe challenging behaviour, aggressive incidents were registered during 20 weeks using the Staff Observation Aggression Scale-Revised. Characteristics of auto-aggressive and outwardly directed incidents and differences in their incidence in male and female clients in these facilities were compared. RESULTS: During the observation period of 20 weeks, 639 aggressive incidents were documented. Most of these (71%) were outwardly directed, predominantly towards staff, while most of the remaining incidents were of an auto-aggressive nature. Of the 185 clients present during the observation period, 44% were involved in outwardly directed incidents (range per client 1-34), and 12% in auto-aggressive incidents (range per client 1-92). Auto-aggressive and outwardly directed incidents differed regarding source of provocation, means used during the incident, consequences of the incident and measures taken to stop the incident. The proportion of men and women involved in each type of incident was comparable, as well as the majority of the characteristics of outwardly directed incidents caused by men and women. CONCLUSIONS: Although approximately half of all clients were involved in aggressive incidents, a small minority of clients were responsible for the majority of incidents. Therefore, better management and prevention of aggressive incidents for only a small group of clients could result in a considerable overall reduction of aggressive incidents in treatment facilities. Comparability of aggressive behaviour in these facilities shown by men and women and differences in characteristics of auto-aggressive and outwardly directed incidents are discussed.

Predicting young adult social functioning from developmental trajectories of externalizing behaviour.

BACKGROUND: The long-term consequences of child and adolescent externalizing problems often involve a wide spectrum of social maladaptation in adult life. The purpose of this study was to describe the predictive link of child and adolescent externalizing developmental trajectories to social functioning in adulthood. METHOD: Social functioning was predicted from developmental trajectories of parent-reported aggression, opposition, property violations and status violations that were defined in a longitudinal multiple birth cohort study of 2,076 males and females aged 4-18 years. Social functioning was assessed using self-reports by young adults aged 18-30 years. Linear and logistic regression analyses were used to describe the extent to which developmental trajectories are prospectively related to social functioning. RESULTS: Children with high-level trajectories of opposition and status violations reported more impaired social functioning as young adults than children with high-level trajectories of aggression and property violations. Young adults who showed onset of problems in adolescence reported overall less impaired social functioning than individuals with high-level externalizing problems starting in childhood. Overall, males reported more impaired social functioning in adulthood than females. However, females with persistent high-level externalizing behaviour reported more impairment in relationships than males with persistent high-level externalizing behaviour. CONCLUSION: The long-term consequences of high levels of opposition and status violations in childhood to serious social problems during adulthood are much stronger than for individuals who show only high levels of aggressive antisocial behaviours.

Health-related-quality-of-life in obese adolescents is decreased and inversely related to BMI.

AIM: To compare health related quality of life (HRQoL) of obese adolescents with normal weight controls and to explore the relation between Body Mass Index (BMI) and HRQoL. METHODS: Cross-sectional study in 31 adolescents (12-18 years), referred for obesity, in comparison with 62 age and sex matched normal weight controls. HRQoL was assessed using the PedsQL 4.0 and Child Health Questionnaire (CHQ). The main outcome measure was difference in HRQoL between obese and control subjects. RESULTS: Mean BMI (SD) in patients versus controls was 34.9 (8.8) versus 19.5 (2.2) kg/m2. In obese adolescents, lower HRQoL in three PedsQL and seven CHQ scales was found (p < 0.05). Variance in HRQoL scales explained by obesity ranged from 8% (CHQ Physical Functioning) to 28% (CHQ Global Health). BMI z-score was inversely correlated with five PedsQL and 10 CHQ scales while the percentage of scale variance explained by BMI z-score ranged from 7% (CHQ Physical summary scale) to 33% (CHQ Global Health). CONCLUSION: HRQoL in obese adolescents is less than in normal weight controls, and is partially explained by obesity-related comorbidity. Overall HRQoL was inversely associated with BMI. Hence, HRQoL is an important indicator of impact of obesity and effect of interventions, complementary to clinical variables.

Pain assessment in profound cognitive impaired children using the Checklist Pain Behavior; is item reduction valid?

There are both commonalities and idiosyncratic features in the reaction of pain children with profound cognitive impairment (CI), and that there is no evidence to suggest that idiosyncratic behavior is more characteristic of this population than of any other population. The main objective of this study was to identify whether the 23-item version of the Checklist Pain Behavior could be reduced to 10 items. Previous research demonstrated that only these 10 items discriminated between absence and presence of pain. Second, we wanted to explore the underlying structure of these 10 selected items including its performance. Data of 477 observations in 73 children were used. All these children were video-taped while they were admitted to the Sophia Children's Hospital for surgery, twice before and five times after surgery. These video-tapes were scored by an independent observer. A visual analogue scale (VAS) by a researcher was used to assess the presence of pain. We tested whether the underlying structure was unidimensional, and whether it had differential qualities between pain and no pain, and to which degree. Using a modern psychometric method, i.e., Mokken scaling model, we unraveled the interdependency of the pain response in CI-children, in that the structure turned out to be unidimensional. In addition, these behaviors could be hierarchically ordered in terms of frequency of occurrences. Finally, these behaviors had to a high degree the potentialities to estimate the likelihood of occurrence of pain.

Supporting parents of youths with intellectual disabilities and psychopathology.

BACKGROUND: Parents of children and adolescents with both intellectual disabilities (ID) and psychopathology often experience high levels of parenting stress. To support these parents, information is required regarding the types of support they need and whether their needs are met. METHOD: In a sample of 745 youths (aged 10-24 years) with moderate to borderline ID, 289 parents perceived emotional and/or behavioural problems in their child. They were asked about their needs for support and whether these needs were met. Logistic regression analysis revealed the variables associated with both needing and receiving specific types of support. In addition, we asked those parents who had refrained from seeking support about their reasons. RESULTS: Most parents (88.2%) needed some supports, especially a friendly ear, respite care, child mental health care and information. Parents who perceived both emotional and behavioural problems in their child needed support the most. In addition, parents whose child had any of these problems before the past year, who worried most about their child and suffered from psychopathology themselves, more often needed support. Parents of children with moderate ID or physical problems especially needed 'relief care', that is, respite care, activities for the child and practical/material help. The need for a friendly ear was met most often (75.3%), whereas the need for parental counselling was met least often (35.5%). Not receiving support despite having a need for it was primarily related to the level of need. Parents who indicated to have a stronger need for support received support more often than parents who had a relatively low need for support. The parents' main reasons for not seeking support concerned their evaluation of their child's problems (not so serious or temporary), not knowing where to find support or wanting to solve the problems themselves first. CONCLUSIONS: Most parents had various support needs that were frequently unmet. Service providers should especially aim at providing information, activities, child mental health care and parental counselling. Furthermore, parents need to be informed about where and how they can obtain what kind of support. A case manager can be of help in this.

Risk factors for psychopathology in children with intellectual disability: a prospective longitudinal population-based study.

BACKGROUND: This study examined risk factors for the development of psychopathology in children with intellectual disability (ID) in the developmental, biological, family and social-ecological domains. METHODS: A population sample of 968 children, aged 6-18, enrolled in special schools in The Netherlands for educable and trainable ID were assessed at Time 1. A random 58% were re-contacted about 1 year later, resulting in a sample of 474 at Time 2. RESULTS: Psychopathology was highly consistent over 1 year. Risk factors jointly accounted for significant, but small, portions of the variance in development of psychopathology. Child physical symptoms, family dysfunction and previous parental mental health treatment reported at Time 1 were uniquely associated with new psychopathology at Time 2. CONCLUSIONS: Prevention and early intervention research to find ways to reduce the incidence of psychopathology, possibly targeting family functioning, appear important.

Measuring quality of life in children referred for psychiatric problems: psychometric properties of the PedsQL 4.0 generic core scales.

OBJECTIVE: The aim of this study was to assess the psychometric properties of the Dutch translation of the Pediatric Quality of Life Inventory (PedsQL 4.0) generic core scales and assess its usefulness in measuring quality of life (QoL) in a child psychiatric population. METHODS: Reliability and validity of the PedsQL were assessed in 310 referred children (ages 6-18 years) and a comparison group consisting of 74 non-referred children (ages 7-18 years), and the parents in both groups. RESULTS: Confirmatory factor analysis resulted in a four-factor solution. Internal consistency reliability for the PedsQL Total Scale Score (alpha = 0.84 child self-report, alpha = 0.87 parent proxy-report), Psychosocial Health Score (alpha = 0.70 child self-report, alpha = 0.81 parent proxy-report), and most subscale scores were acceptable for group comparisons. Correlations between scores of fathers and mothers were large. Criterion-related validity was demonstrated by significantly lower PedsQL scores for referred vs. non-referred children. Significant correlations between PedsQL scales and measures of psychopathology showed convergent validity. Small correlations between PedsQL scales and intelligence of the child evidenced discriminant validity. CONCLUSION: The PedsQL seems a valid instrument in measuring QoL in children referred for psychiatric problems.

Effect of dry bed training on behavioural problems in enuretic children.

UNLABELLED: Children with nocturnal enuresis (n = 91) selected by school doctors in The Netherlands from 1991 to 1994 were included in a study to assess the course of behavioural problems especially when the children became dry after the Dry Bed Training (DBT) programme. The Child Behaviour Checklist (CBCL) questionnaire was completed by 88 parents (96%) prior to DBT (T1) and by 83 parents (91%) 6 mo after DBT (T2). The mean CBCL total problem score at T1: 24.0 (range 2-91, SD 16) was significantly higher than that of a Dutch norm group: 20.45, (p=0.025). Compared to T1, the mean CBCL total problem score at T2 was 16.8 (range 0-73; SD 14.7; p < 0.0001). Of the children with CBCL total problem scores at T1 in the borderline or clinical range, 92% became dry and 58% improved to the normal range. At T2, the children seemed to have less internal distress, fewer problems with other people, and were less anxious and/or depressed. CONCLUSION: Children with behavioural/emotional problems who wet their beds need not first be treated for their behavioural/emotional problems. Bedwetting can be treated successfully with DBT when other treatments such as normal alarm treatment have failed, and alarm treatment/DBT can have a positive influence on behavioural/emotional problems.

Psychometric properties of the revised Developmental Behaviour Checklist scales in Dutch children with intellectual disability.

The present study assessed the reliability and validity of the revised scales of the Developmental Behaviour Checklist (DBC) in a Dutch sample of children with intellectual disability (ID). The psychometric properties of the parent and teacher versions of the DBC were assessed in various subsamples derived from a sample of 1057 Dutch children (age range=6-18 years) with ID or borderline intellectual functioning. Good test-retest reliability was shown both for the parent and teacher versions. Moderate inter-parent agreement and high one-year stability was found for the scale scores. Construct validity was satisfactory, although limited by high informant variance. The DBC scales showed good criterion-related validity, as indicated by significant mean differences between referred and non-referred children, and between children with and without a corresponding DSM-IV diagnosis. The reliability and validity of the revised DBC scales are satisfactory, and the checklist is recommended for clinical and research purposes.

Early preschool predictors of preadolescent internalizing and externalizing DSM-IV diagnoses.

OBJECTIVE: To investigate the independent predictive value of parent-reported psychopathology and family risk factors in early preschool in relation to parent-reported internalizing and externalizing psychopathology in preadolescence. METHOD: Subjects were participants in a longitudinal study of 420 two- to three-year-olds from the general population of Zuid-Holland, the Netherlands, which started in 1989. At a second follow-up 8 years later (ages 10-11 years), 358 children participated. For this study, 332 children were included for whom DSM-IV diagnoses (derived from the Diagnostic Interview Schedule for Children-Version 4-Parent Version) were obtained at age 10 to 11 years. Preschool risk factors were obtained through the Child Behavior Checklist for ages 2 to 3 years and a parent interview. RESULTS: Early preschool internalizing and externalizing problems were predictive of their DSM-IV counterparts 8 years later, independent of the influence of early parent-reported family risk factors. Preschool child physical problems were independently predictive of both internalizing and externalizing diagnoses in preadolescence. Of the environmental risk factors, only stressful life events contributed independently to the prediction of later externalizing problems. CONCLUSION: Early adverse family circumstances and parenting characteristics do not contribute to the prediction of later psychopathology once child characteristics are accounted for.

The association between physiological and behavioral pain measures in 0- to 3-year-old infants after major surgery.

To estimate the association between behavioral and physiological pain measures and to identify determinants predicting the level of association, the COMFORT 'behavior' scale, heart rate (HR), mean arterial pressure (MAP), and the variability of HR and MAP (HRV and MAPV) were assessed every 3 hours after major abdominal or thoracic surgery. Subjects were 204 infants aged 0-3 years. The within-subject correlations, using the repeated measures, were 0.37, 0.44, 0.48, and 0.49 for COMFORT 'behavior' with HRV, HR, MAP, and MAPV, respectively. Neonates had lower behavior-physiology correlations than the older infants, due to low pain scores. Pain characteristics significantly predicted the COMFORT 'behavior'-HR/MAP correlations, suggesting that the behavior-physiology correlations increase with increasing pain. The behavior-physiology correlations were not greatly affected by physical condition. These data demonstrate large interindividual differences in behavior-physiology correlations after major surgery in 0- to 3-year-old infants. These differences should be further explored in future research.