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A longitudinal twin study of temperament and behavior problems: common genetic or environmental influences?

OBJECTIVES: To assess the longitudinal covariance between emotionality, activity, and sociability (EAS) temperamental traits and anxious/depressed behavior, attention problems, delinquent behavior, and aggressive behavior and to assess the significance of genetic and common environmental influences on the temperament and behavior relations. METHOD: Parental responses to the Child Behavior Checklist and the EAS Temperament Survey were collected from five national cohorts of Norwegian same-sex twins. The final sample consisted of 759 twin pairs aged 7 through 17 at 2-year follow-up. RESULTS: High emotionality predicted anxious/depressed behavior, attention problems, delinquent behavior, and aggressive behavior. The influence on delinquent and aggressive behavior was stronger in boys. Aggressive behavior was further predicted by high activity scores, especially in younger children. Significant genetic influence was found for the covariance between emotionality and attention problems and emotionality and aggressive behavior. CONCLUSION: Emotionality was the strongest temperamental predictor of behavior problems. The mechanisms involved in the associations between temperament and behavior problems appeared to differ with kind of behavior problems.

Adolescent↗

Further analysis of idiosyncratic antecedent influences during the assessment and treatment of problem behavior.

Recent research findings suggest that idiosyncratic variables can influence the outcomes of functional analyses (E. G. Carr, Yarbrough, & Langdon, 1997). In the present study, we examined idiosyncratic environment-behavior relations more precisely after identifying stimuli (i.e., a particular toy and social interaction) associated with increased levels of problem behavior. Two children, an 8-year-old boy with moderate mental retardation and a 5-year-old boy with no developmental delays, participated. Results of functional analyses for both children indicated that idiosyncratic antecedent stimuli set the occasion for occurrences of problem behavior (hand biting or hand flapping) and that problem behavior persisted in the absence of social contingencies. Further analyses were conducted to identify specific components of the stimuli that occasioned problem behavior. Treatments based on results of the analyses successfully reduced self-injury and hand flapping.

Attention↗

Principal components analyses of behavior problems in Jamaican clinic-referred children: teacher reports for ages 6-17.

Factor analyses of child behavior problems have often yielded two broad-band syndromes, Overcontrolled (e.g., worrying, fearfulness, withdrawal) and Undercontrolled (e.g., restlessness, fighting, disobedience). We explored whether these two broad-band syndromes might be identified for youngsters in Jamaica. We obtained teacher reports for 320 clinic-referred Jamaican youngsters on a 24-item problem checklist designed by Jamaican clinicians for the assessment of child behavior problems and subjected these to principal components analyses. Regardless of whether the sample was split according to age or sex, the analyses revealed factors similar to the Over- and Undercontrolled syndromes most often found in other cultures. The analyses also revealed school absence factors in each age and sex group; school avoidance was correlated with crying in children (aged 6-11) but with conduct problems in adolescents (aged 12-17). The findings suggest important similarities and possible differences between the factor structures of child behavior problems in Jamaica and the United States.

Adolescent↗

Physical illness, pain, and problem behavior in minimally verbal people with developmental disabilities.

There is growing interest in the role that physical illness and pain might play in exacerbating problem behavior in individuals with developmental disabilities. Assessment of these factors, however, is often difficult since many individuals have minimal verbal communication skills. In response to this difficulty, we developed a sequential method of assessment involving retrospective and prospective measurement strategies. We found that the frequency and intensity of problem behavior was greater on "sick" days than on "well" days. Further, the higher the level of pain, the greater was the frequency and intensity of problem behavior. We discuss the concept of pain as a setting event for problem behavior and the intervention strategies that follow from this conceptualization.

Adolescent↗

A twin study of specific behavioral problems of socialization as viewed by parents.

Our study focused on the etilogy of specific behavioral problems rather than on a global syndrome such as hyerpactivity. As a first step in studying specific behavioral problems, we revised the Conners (1970) Parent Symptom Rating questionnaire to improve its factor structure. Our revised instrument and the test-retest reliabilities of its 12 scales are described. A classical twin analysis comparing intraclass correlations for 54 pairs of identical twins and 33 pairs of same-sex fraternal twins indicated substantial genetic influence on behavioral problems in school-aged children.

Child↗

Maternal smoking and behavior problems of children.

Numerous health consequences of children's exposure to maternal smoking have been demonstrated, including increased rates of low birth weight, infant mortality, respiratory infections, asthma, and modest impairments of cognitive development. There is little evidence, however, linking maternal smoking and increased rates of children's behavior problems. Data from the population-based National Longitudinal Survey of Youth were used to investigate the possible association of maternal smoking and behavior problems among 2256 children aged 4 through 11 years. In multiple regression analyses the authors controlled for child's race, age, sex, birth weight, and chronic asthma; family structure, income, and divorce or separation in the prior 2 years; mother's education, intelligence, self-esteem, employment status, chronic disabling health conditions, and use of alcohol during pregnancy; and the quality of the home environment as assessed by the Home Observation for Measurement of the Environment-Short Form to investigate the relationship between maternal smoking and children's behavior problems. The measure of maternal smoking status reflected two levels of smoking intensity (less than a pack per day and a pack or more per day) for each of three different categories of children's exposure: prenatal only (mother smoked only during pregnancy), passive only (mother smoked only after pregnancy), and prenatal plus passive exposure (mother smoked both during and after pregnancy). Measures of children's behavior problems included the overall score on a 32-item parent-reported child Behavior Problem Index (PBI), scores on the BPI's subscales, and rates of extreme scores on the BPI.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗

Minor physical anomalies and problem behavior in elementary school children.

The present study replicated and extended earlier findings on the relationship between minor physical anomalies and several classes of problem behavior in an unselected group of elementary school children. Teachers and peers were the judges of problem behavior. The problem checklist and a teacher ranking of hyperactivity were related to the incidence of minor physical anomalies for boys. A negative peer factor was also consistently related to the incidence of minor physical anomalies for both boys and girls. The behavior of high-anomaly girls was not easily characterized in terms of any one type of problem behavior. Sex differences and their implications are discussed.

Child↗

Tobacco use in adolescence: longitudinal links to later problem behavior among African American and Puerto Rican urban young adults.

In this study, the authors assessed the relationship between adolescent tobacco smoking and measures of inner control, deviant behavior, and associating with deviant peers, which are indicators of problem behavior. African American (N = 333) and Puerto Rican (N = 329) early adolescents completed questionnaires in their classrooms in 1990 at Time 1 (T1) and were individually interviewed thereafter when they were late adolescents in 1995 at Time 2 (T2) and as young adults in 2000 at Time 3 (T3). The authors used ordinary least squares regression analysis to assess the comparative association of adolescent smoking patterns at T1 and T2 and the young adult outcomes at T3; they controlled for demographic variables, level of the outcome measure at T2, and marijuana use at T2. The analyses suggested that experimental tobacco smokers demonstrated more problem behaviors than did nonsmokers, and late and continuous smokers demonstrated more problem behaviors as young adults than did experimental smokers and nonusers. These findings may provide a useful guide to a next step that involves translational research.

Adolescent↗

Variable-time reinforcement schedules in the treatment of socially maintained problem behavior.

Noncontingent reinforcement (NCR) consists of delivering a reinforcer on a time-based schedule, independent of responding. Studies evaluating the effectiveness of NCR as treatment for problem behavior have used fixed-time (FT) schedules of reinforcement. In this study, the efficacy of NCR with variable-time (VT) schedules was evaluated by comparing the effects of VT and FT reinforcement schedules with 2 individuals who engaged in problem behavior maintained by positive reinforcement. Both FT and VT schedules were effective in reducing problem behavior. These findings suggest that VT schedules can be used to treat problem behavior maintained by social consequences.

Adolescent↗

Assessing personality features and their relations with behavioral problems in adolescents: Tridimensional Personality Questionnaire and Junior Eysenck Personality Questionnaire.

This study examines the applicability for adolescents of the Tridimensional Personality Questionnaire (TPQ), which was originally designed for adults, as compared to the Junior Eysenck Personality Questionnaire (JEPQ). The study also evaluates their inter-relationship and associations with various behavioral problems as reported by parents using the Child Behavior Checklist (CBCL). In a representative community sample of 905 adolescents, the results of internal consistency, test-retest reliability, and factor analysis showed that both the Harm Avoidance (HA) and the Novelty Seeking (NS) scales of the TPQ have sound construct validity, although the Reward Dependence (RD) scale has less so. The intercorrelation and factor analysis of the two questionnaires showed that the TPQ and the JEPQ are not simply alternative descriptions of the same construct of personality. In their associations with various behavioral problems, the scales of the TPQ are relatively more specifically associated with behavioral problems than the scales of the JEPQ. Our results provide empirical support for the applicability of the NS and the HA scales of the TPQ in adolescents, particularly in relation to behavioral problems.

Adolescent↗

The relation of a family history of alcoholism, obstetric complications and family environment to behavioral problems among 154 adolescents in Germany: results from the children of alcoholics study in Pomerania.

BACKGROUND: Behavioral problems in adolescence have been shown to be associated with the presence of a positive family history of alcoholism (FH+), obstetric complications (OCs), and negative parenting practices. METHOD: This study tested the relation of these factors to aggression/delinquency and attention problems in an untreated population sample of 154 adolescents in Pomerania. Furthermore, we evaluated the predictive strength of a FH+, OCs and negative parenting styles in a prospective subsample of 127 adolescents using a hierarchical regression analysis. RESULTS: Group comparisons between offspring with higher vs. lower values on aggression/delinquency revealed that only rejection by the parents was significantly more often reported by teenagers with higher measures on these behavioral problems. Offspring with higher values on attention problems had more OCs reported by the mother and also had more feelings of parental rejection compared to controls. The results of the hierarchical regression analysis showed that parental rejection was the only significant predictor for both aggression/delinquency, and attention problems measured 1 year after the initial assessment. CONCLUSION: We conclude that parental rejection is a major risk factor for both aggression/delinquency and attention problems. Reflecting the fact that these behavioral problems have been reported to be strongly associated with later substance misuse, the improvement of parenting practices should be considered in prevention and intervention programs.

Adolescent↗

Relationship between cigarette smoking and health risk and problem behaviors among US adolescents.

OBJECTIVE: To examine whether sociodemographic factors and health risk and problem behaviors explain the prevalence of cigarette smoking among US adolescents. DESIGN: Probability survey. PARTICIPANTS: A nationally representative sample of US adolescents. MAIN OUTCOME MEASURES: Weighted prevalence, adjusted odds ratio (OR), and 95% confidence intervals (CIs) for current smoking status by health risk and problem behaviors. RESULTS: The prevalence of smoking was highest among adolescents who were white, older, and who had a high school education or lived in the Northeast. When we adjusted for sociodemographic factors and health risk and problem behaviors, smoking was associated with marijuana use (OR, 3.7; 95% CI, 2.7-5.1), binge drinking (OR, 2.1; 95% CI, 1.6-2.8), and fighting (OR, 1.4; 95% CI, 1.1-1.7) among white adolescent males. Similar associations between each of these 3 behaviors and cigarette smoking were found among white adolescent females and African American and Hispanic adolescent males and females. Cigarette smoking was also associated with using smokeless tobacco, having multiple sexual partners, and not using bicycle helmets among white adolescent males and females, having multiple sexual partners among Hispanic adolescent females, and carrying weapons among Hispanic adolescent males. CONCLUSIONS: Marijuana use, binge drinking, and fighting are correlates of cigarette smoking among US adolescents. These associations, which vary by sex and race or ethnicity, suggest clustering to form a risk behavior syndrome.

Adolescent↗

Narrative representations of moral-affiliative and conflictual themes and behavioral problems in maltreated preschoolers.

Examined whether maltreated preschoolers are more likely than nonmaltreated preschoolers to have fewer moral-affiliative and more conflictual narrative representations and whether these representations mediate child behavior problems. A structured narrative story-telling task was administered to assess representations, and independent ratings of behavior problems were obtained from teachers. The narratives of maltreated children contained more conflictual and fewer moral-affiliative themes. Maltreated children also exhibited more internalizing and externalizing behavior problems. A partial mediation effect of conflictual representations on the relation between child maltreatment and externalizing behavior problems was found. The results demonstrate the relation between child maltreatment and children's organization of their life experiences and their behavioral symptomatology.

Child Abuse↗

Demographic characteristics, social competence, and behavior problems in children with gender identity disorder: a cross-national, cross-clinic comparative analysis.

This study examined demographic characteristics, social competence, and behavior problems in clinic-referred children with gender identity problems in Toronto, Canada (N = 358), and Utrecht, The Netherlands (N = 130). The Toronto sample was, on average, about a year younger than the Utrecht sample at referral, had a higher percentage of boys, had a higher mean IQ, and was less likely to be living with both parents. On the Child Behavior Checklist (CBCL), both groups showed, on average, clinical range scores in both social competence and behavior problems. A CBCL-derived measure of poor peer relations showed that boys in both clinics had worse ratings than did the girls. A multiple regression analysis showed that poor peer relations were the strongest predictor of behavior problems in both samples. This study-the first cross-national, cross-clinic comparative analysis of children with gender identity disorder-found far more similarities than differences in both social competence and behavior problems. The most salient demographic difference was age at referral. Cross-national differences in factors that might influence referral patterns are discussed.

Child↗

Analogue assessment of child behavior problems.

The psychometric properties of analogue assessment measures of child behavior problems are reviewed. Analogue assessment refers to an observational measure of targeted behaviors that are elicited by simulated experimental conditions, which, in turn, are devised to approximate natural circumstances. For the most part, this assessment approach has been used sporadically in the clinical setting with children who are behaviorally disturbed. Lack of standardization of measures and inconsistent findings of ecological validity are among several concerns noted. The paucity of available data limits conclusions that can be drawn at this time about the role of analogue assessment in the evaluation and treatment of child behavior problems.

Child↗

The relation of parental practices and self-conceptions to young adolescent problem behaviors and substance use.

The object of the present research was to examine the role of parenting practices for young adolescent psychosocial adjustment and self-regulation problems. The sample included 287 sixth- and seventh-grade subjects from intact families. The participants completed a questionnaire that measured variables including family interaction, parental involvement in children's activities, parental support, joint decision-making, and monitoring of children's behavior. Children's involvement with friends, after-school activities, school achievement, and self-reported externalizing behaviors (problem behaviors, cigarette and alcohol use) were also measured. Self-concept domains (scholastic competence, social acceptance, and behavioral conduct) were assessed with Harter's Self-Perception Profile. The findings indicated that self-conceptions of positive behavioral conduct and higher parental monitoring of children's activities were consistently negatively related to young girls' and boys' behavior problems and substance use. Parental monitoring was higher for girls and for younger children. Lower monitoring was also related to children's pattern of after-school activities that were connected to at-risk behavior. Parental involvement and supervision of children's day-to-day activities seem particularly important in socializing children's behavior at the time of early adolescence.

Adolescent↗

The effect of a structured intervention on caregivers of patients with dementia and problem behaviors: a randomized controlled pilot study.

The objective was to assess the effect of a structured intervention on caregiver stress and the institutionalization rate of patients with dementia and problem behaviors. Caregivers contacting the Federazione Alzheimer Italia (AI) to receive help, advice, or information in relation to problem behaviors of outpatients were enrolled. Eligible caregiver-patient dyads were randomized to receive either a structured intervention or the counseling AI usually provides (control group). After basal assessment, families were reassessed at 6 and 12 months. Problem behavior (particularly agitation) was the only variable significantly correlated (P = 0.006) with the baseline caregivers' stress score. Thirty-nine families completed the 12-month follow-up; the mean problem behavior score was significantly lower in the intervention than the control group (p < 0.03); the time needed for care of the patient increased by 0.5 +/- 9.7 hours/day in the control group and decreased by 0.3 +/- 4.1 in the intervention group (p = 0.4, Wilcoxon test). The main determinant of institutionalization seemed to be the level of caregiver stress (p = 0.03). In patients of the intervention group, there was a significant reduction in the frequency of delusions. This pilot study suggests that caregiver stress is relieved by a structured intervention. The number of families lost to follow-up, the relatively short duration of the study, and the ceiling effect due to the severity of the clinical characteristics of patients probably all partly dilute the observed findings.

Activities of Daily Living↗

Measuring problem behaviors in children with mental retardation: dimensions and predictors.

Scores from the Child Behavior Checklist (CBCL; Achenbach, 1991a) and the Client Development Evaluation Report (CDER; California Department of Developmental Services, 1980) for 67 children and adolescents with mental retardation were examined to evaluate the factorial validity of the instruments. Four factor analyses were conducted. The initial factor analysis of CBCL data failed to confirm the presence of the five first-order factors previously reported for the CBCL standardization sample (Achenbach, 1991b). Second, the higher-order factors of Externalizing and Internalizing behaviors, similar to the structure reported for the CBCL standardization sample (Achenbach, 1991b), were confirmed on the present sample. Third, the two CDER factors of Personal Maladaption and Social Maladaption, previously identified by Widaman, Gibbs, and Geary (1987), were also confirmed. Finally, a higher-order factor analysis of the two factor scores from the CBCL and two factor scores from the CDER was conducted to study the congruence between the CBCL Externalizing and CDER Social Maladaption dimensions, and between the CBCL Internalizing and CDER Personal Maladaption factors. Moderate levels of congruence were found. Next, child characteristics, including level of mental retardation, age, and four dimensions of adaptive behavior, were used as predictors of problem behavior. No child characteristics were significantly related to the CBCL Externalizing dimension, but child age and level of mental retardation were significant predictors of the CBCL Internalizing dimension. CDER Cognitive Competence predicted CDER Social Maladaption, and child age predicted CDER Personal Maladaption. The findings are discussed in relation to previous studies of problem behaviors of children and adolescents with mental retardation.

Adolescent↗