Individual, dyadic, and triadic influences on the development of the family system were examined in the context of developmental risk. Participants were 145 couples and their 4-month-old first-born child in six groups: controls, three mother-risk groups (depressed, anxious, comorbid), and two infant-risk groups (preterm, intrauterine growth retardation). Dyadic and triadic interactions were observed. Differences in parent–infant reciprocity and intrusiveness were found, with mother-risk groups scoring less optimally than controls and infant-risk groups scoring the poorest. Similar results emerged for family-level cohesion and rigidity. Structural modeling indicated that father involvement had an influence on the individual level, by reducing maternal distress, as well as on the triadic level, by increasing family cohesion. Maternal emotional distress affected the reciprocity component of early dyadic and triadic relationships, whereas infant negative emotionality impacted on the intrusive element of parenting and family-level relationships. Discussion considered the multiple and pattern-specific influences on the family system as it is shaped by maternal and child risk conditions.This study was supported by the Israeli Science Foundation (No. 01/945) and the March of Dimes Foundation (12-FY04-50).

To examine the effects of risk on infant development within cultural contexts, 141 dual-earner Israeli and Palestinian couples and their first-born child were observed at 5 months and again at 34 months. Eight ecological determinants were examined as potential risk factors, including the infant's observed and parent-reported difficult temperament; the mother's depressive symptoms, work–family interference, and experience of childbirth; the parents' marital satisfaction and social support; and observed maternal and paternal sensitivity. Symbolic play and behavior problems were assessed at 34 months. Culture-specific effects of risk and protective factors were found. Parent sensitivity facilitated symbolic competence to a greater extent in the Israeli group. Culture moderated the effects of maternal depression and family social support on toddlers' behavior problems. Maternal depressive symptoms had a negative impact on the behavior adaptation of Israeli children and social support buffered against behavior problems in the Arab group. Implications for research on risk and resilience and the role of culture in moderating the effects of ecological risk are discussed.The Israeli–Palestinian Project was supported by the New-Land Foundation. The study is dedicated to the memory of the late professor Donald Cohen, MD, whose vision and support enabled this project.

Although neurodevelopmental impairment is a risk factor for poor cognitive and behavioral outcomes, associations between early and later functioning are only moderate in magnitude, and it is likely that other factors intervene to modify this trajectory. The current study tested the hypothesis that sensitive, stimulating caregiving would promote positive behavioral and cognitive outcomes among children who were at risk based on the results of a neurodevelopmental screener and a temperament inventory. The sample comprised 1,720 infants and toddlers from the National Survey of Child and Adolescent Well-Being, a longitudinal study of children who were involved with child welfare services. Children were first assessed between 3 and 24 months of age and subsequently 18 months later. Children who experienced improvements in the amount of sensitive, stimulating caregiving they received had positive cognitive and behavioral outcomes 18 months later, despite early levels of neurodevelopmental risk. The association between changes in caregiving quality and changes in children's functioning was stronger for children who were removed from the care of their biological parents before the follow-up assessment than for children who remained in the care of biological parents, suggesting a causal role for caregiving quality on children's outcomes.

A history of research on gene–environment interaction (G × E) is provided in this article, revealing the fact that there have actually been two distinct concepts of G × E since the very origins of this research. R. A. Fisher introduced what I call the biometric concept of G × E (G × EB), whereas Lancelot Hogben introduced what I call the developmental concept of G × E (G × ED). Much of the subsequent history of research on G × E has largely consisted of the separate legacies of these separate concepts, along with the (sometimes acrimonious) disputes that have arisen time and again when employers of each have argued over the appropriate way to conceptualize the phenomenon. With this history in place, more recent attempts to distinguish between different concepts of G × E are considered, paying particular attention to the commonly made distinction between “statistical interaction” and “interactionism,” and Michael Rutter's distinction between statistical interaction and “the biological concept of interaction.” I argue that the history of the separate legacies of G × EB and G × ED better supports Rutter's analysis of the situation and that this analysis best paves the way for an integrative relationship between the various scientists investigating the place of G × E in the etiology of complex traits.

Autistic adults display enhanced and locally oriented low-level perception of static visual information, but diminished perception of some types of movement. The identification of potential precursors, such as atypical perceptual processing, among very young children would be an initial step toward understanding the development of these phenomena. The purpose of this study was to provide an initial measure and interpretation of atypical visual exploratory behaviors toward inanimate objects (AVEBIOs) among young children with autism. A coding system for AVEBIOs was constructed from a corpus of 40 semistandardized assessments of autistic children. The most frequent atypical visual behavior among 15 children aged 33–73 months was lateral glance that was mostly oriented toward moving stimuli and was detected reliably by the experimenters (intraclass correlation > .90). This behavior was more common among autistic than typically developing children of similar verbal mental age and chronological age. As lateral vision is associated with the filtering of high spatial frequency (detail perception) information and the facilitation of high temporal frequencies (movement perception), its high prevalence among very young autistic children may reflect early attempts to regulate and/or optimize both excessive amounts of local information and diminished perception of movement. These findings are initial evidence for the need to consider the neural bases and development of atypical behaviors and their implications for intervention strategies.

The interrelations of maternal attachment representations, mother–infant interaction in the home, and attachment relationships were studied in 99 adolescent mothers and their 12-month-old infants. A q-factor analysis was used to identify emergent profiles of mother and infant interaction. Traditional multivariate statistical analyses were complemented by a relationship-based approach utilizing latent class analysis. The results confirmed many theoretical predictions linking interaction with autonomous maternal representations and secure attachment, but failed to support a mediating role for maternal sensitivity. Strong associations were found between mothers displaying nonsensitive and disengaged interaction profiles, infants who did not interact harmoniously with the mother and preferred interaction with the visitor, unresolved maternal representations, and disorganized attachment relationships. Moreover, maternal nonsensitive and disengaged interaction in the home mediated the association between unresolved representations and disorganization. The results of the latent class analysis were consistent with these findings and revealed additional, empirically derived associations between attachment classifications and patterns of interactive behavior, some of which prompt a reconsideration of our current understanding of attachment transmission in at-risk populations.This research was supported by a predoctoral fellowship to the first author from the Social Sciences and Humanities Research Council and by research grants to the second and third authors from the Social Sciences and Humanities Research Council, the Ontario Mental Health Foundation, and Health Canada.

A person-oriented approach was adopted to examine joint developmental trajectories of physical and indirect aggression. Participants were 1183 children aged 2 years at the initial assessment and followed over 6 years. Most children followed either low or declining trajectories of physical aggression (PA), but 14.6% followed high stable trajectories. Approximately two-thirds of participants followed low indirect aggression (IA) trajectories (67.9%), and one-third (32.1%) followed high rising trajectories. The results combining both PA and IA group memberships indicate that most children (62.1%) exhibit desisting levels of PA and low levels of IA. A significant proportion followed a trajectory of moderately desisting PA and rising IA (14.2%), and 13.5% followed high level trajectories of both forms of aggression. Virtually no children were high on one type and low on the other. Multinomial regressions analyses were used to predict joint trajectory group membership from selected child and family variables measured at 2 years. Young motherhood and low income predicted membership in the high PA-high IA trajectory, but only hostile parenting remained significant after family processes variables were entered in the model. Being a boy, young motherhood, and hostile parenting were generally associated with higher levels of PA. Girls were more likely than boys to follow a trajectory of desisting PA and rising IA. The results suggest that some children, mostly girls, reduce their use of PA and tend to increase their use of IA, and that highly physically aggressive children also tend to be highly indirectly aggressive. Early family risk characteristics and hostile parenting interfere with the socialization of aggression.This research was supported by research grants from Quebec's FQRSC and CIQSS, Canada's CIHR and SSHRC, the Canadian Institute for Advanced Research, the Molson foundation, St-Justine Hospital's Research Center, and the University of Montréal. We thank Danielle Forest (University of Montréal) for her work on data analysis and Franck Larouche (Statistics Canada) for his sustained commitment to assist us in managing the data.

Developmental psychopathology theory speaks to the existence of early-manifesting internalizing problems with a heterogeneous longitudinal course. However, the course of internalizing problems has been investigated largely from late childhood onward, with methods that assume children's problem trajectories vary more so in rate than in qualitative functional form. This can obscure heterogeneity in symptom process and course, obscure onset of early gender differences in internalizing problems, and obscure the relevance of early sociocontextual risks for long-term internalizing outcomes. The present study addressed these issues by using person-oriented (latent growth mixture) methods to model heterogeneity in maternal-reported internalizing symptoms from age 2 to 11 years (N = 1,364). Three latent trajectory classes were supported for each gender: two-thirds of children followed a low-stable trajectory; smaller proportions followed decreasing/increasing or elevated-stable trajectories. Although the number, shape, and predictive validity of internalizing trajectory classes were similar across gender, trajectory classes' initial values and rates of change varied significantly across gender, as did the impact of maternal postpartum depression and anxiety on latent growth factors. Extracted latent trajectories were differentially predicted by postpartum maternal psychopathology, and themselves, in several respects, differentially predicted self-reported depressive symptoms in preadolescence. However, discussion focuses on the need for further external validation of extracted latent classes.The authors thank Daniel J. Bauer for his insightful comments on earlier versions of this manuscript.

Human studies have suggested an association between a variable length polymorphism in the serotonin transporter gene promoter region and vulnerability to anxiety and depression. Relative to the long (l) allele, the short (s) allele increases the risk of developing depression in individuals exposed to stressful life events. An orthologue of the human variant is present in rhesus macaques and allows for studies in animals exposed to stress. Here, we used an established model of early life stress exposure, in which rhesus macaques are raised without adults in a group of peers (peer-only reared [PR]), or with their mothers. At 6 months of age, animals were subjected to 4-day long social separations for 4 consecutive weeks, with 3 days of reunion in between. Data were collected during both the acute (Day 1) and chronic phases (Days 2–4) of separation. Behavioral factors were separately extracted for each phase of separation. For acute separation, the behavioral factors generated were despair and behavioral pathology and, for the chronic phase despair, agitation, and behavioral pathology. During both phases of social separation, PR l/s animals were more likely to exhibit pathological behaviors, whereas PR l/l monkeys show higher levels of despair compared to the other three groups. These findings indicate that early stress affects the behavioral response to separation differently as a function of recombinant human serotonin transporter linked polymorphic repeat genotype and suggest that carriers of the s allele are not only more anxious but may also be more vulnerable to developing behavioral pathology in the face of chronic adversity.

Studies have investigated the potential effects of prenatal cocaine exposure (CE) on children's development. However, few studies have examined predictors of resilient outcomes in this population. We examined vagal tone (VT) as a resilience factor in prenatal CE. Utilizing data from the Maternal Lifestyle Study, a cumulative risk index was derived for children with and without prenatal CE. Presence of CE and other prenatal drugs was summed with postnatal risks in infancy to yield a 15-item risk index. Preschool cognitive outcomes, problem behaviors, and adaptive behaviors were measured. VT was assessed during an infant exam at 1 month and toy exploration at 36 months. We included children with complete physiologic data (217 CE, 333 non-CE). Children were classified as having consistently high, consistently low, or fluctuating VT at 1 and 36 months. Children were also classified as high versus low risk. High-risk children had lower IQ scores, more problem behaviors, and lower ratings of adaptive behaviors than low-risk children. A significant risk by VT–stability interaction indicated that for high-risk children, those with stable low VT had higher ratings of adaptive behaviors at 36 months. This is consistent with theory linking reduced VT during tasks to adaptive regulation and indicates that such regulatory functioning may serve as a protective factor in prenatal CE.

The study of gene–environment interaction (G × E) constitutes an area of significant social and clinical significance. Different types of research study designs are being used to investigate the contribution of G × E to psychopathology, although the term G × E has also been used and interpreted in different ways. Despite mixed evidence that G × E contributes to psychopathology, some promising and consistent findings are emerging. Evidence is reviewed in relation to depression, antisocial behavior, schizophrenia, and attention-deficit/hyperactivity disorder. Although findings from various research designs have different meaning, interestingly much of the evidence with regard to the contribution of G × E that has arisen from twin and adoption studies has been for antisocial behavior and depression. It is for these same forms of psychopathology that molecular genetic evidence of G × E has also been most convincing. Finally, current and anticipated methodological challenges and implications for future research in this area are considered.

Longitudinal growth patterns of internalizing and externalizing behavior problems were examined in a community sample of 441 children across the ages of 2 to 5 using hierarchical linear modeling. Contextual risk was measured using five indicators (socioeconomic status, marital status, number of siblings, parent stress, parent psychopathology), and three levels of child resilience (biological, behavioral, and relational) were also assessed. Results indicate that a general pattern of decline in both types of behavior problems was observed for the entire sample across time, although considerable individual variability in this pattern was observed. Children's externalizing and internalizing behavior at age 5 was predicted by the level of risk at age 2. All three child resilience factors were also predictive of externalizing and internalizing behaviors at age 5. In the prediction of the slope of problem behavior over time, risk status interacted with both temperamental fearlessness and a mutually responsive orientation with the mother to predict the decline in externalizing and internalizing problem behavior. Results underscore the complex interactions of risk and multiple levels of resilience that are implicated in the maintenance of problem behavior over time. They highlight the importance of considering whether expected resilience factors operate similarly across different levels of risk.

Ninety-four low- and middle-income preschoolers (48 boys, 46 girls) were recruited from two sites in a large southwestern city. Children's positive attributions of peer intent, social problem-solving decisions, and attributions of peers' feelings about the provocation were evaluated from individual interviews. In addition, children's anger perception accuracy and their global emotion situation knowledge were assessed. Teachers and their assistants reported on the children's social competence, internalizing and externalizing behavior, and the degree to which children were physically and relationally victimized. Social competence was a negative predictor of relational and physical victimization, and externalizing behavior was a positive predictor of both types of victimization. Anger perception accuracy was negatively related to physical victimization, and global emotion situation knowledge and attributions of sorrow to provoking peers were positive predictors. Results support a conceptual framework that emphasizes the importance of social and emotion-related social cognitive variables for understanding young children's peer-related victimization.The authors thank the children and families for their participation and the preschool teachers for their cooperation. Thanks are also due to the many undergraduate and graduate students who helped with this research. Special thanks to Kimberly Estep and Courtney Hunter for their help with data collection and coding.

This study addressed the basis for the intergenerational transmission of psychosocial risk associated with maternal childhood abuse in relation to offspring adjustment. The study tested how far group differences in individual change in adjustment over time were explained by differences in exposure to specific environmental risk experiences. Data are drawn from the Avon Longitudinal Study of Parents and Children. Information on mothers' own experience of childhood abuse, offspring adjustment at ages 4 and 7 years, and hypothesized mediators was available for 5,619 families. A residuals scores analysis was used to track children's adjustment over time. Maternal childhood abuse was associated with poorer behavioral trajectories between ages 4 and 7 years. Children of abused mothers were more likely to experience a range of negative life events between ages 4 and 7 years, including changes in family composition, separations from parents, “shocks and frights” and physical assaults. Interim life events, together with antecedent psychosocial risk (maternal antenatal affective symptoms, age 4 parental hostility, age 4 family type) fully mediated the association between maternal childhood abuse and offspring prognosis.The authors express their gratitude to the families who participated in the study. Support for these analyses was provided by a grant from the Medical Research Council. The Avon Longitudinal Study of Parents and Children (ALSPAC) is part of the World Health Organisation initiated European Study of Pregnancy and Childhood, and is supported, among others, by the Wellcome Trust, The Department of Health, The Department of the Environment, and the Medical Research Council. The ALSPAC study team comprises interviewers, computer technicians, laboratory technicians, clerical workers, research scientists, volunteers, and managers who continue to make the study possible.

The purpose of the study was to examine the zero-order and unique relations of effortful attentional and behavioral regulation, reactive impulsivity, and anger/frustration to Chinese first and second graders' internalizing and externalizing symptoms, as well as the prediction of adjustment from the interaction of anger/frustration and effortful control or impulsivity. A parent and teacher reported on children's anger/frustration, effortful control, and impulsivity. Parents reported on children's internalizing symptoms, and teachers and peers reported on children's externalizing symptoms. Children were classified as relatively high on externalizing (or comorbid), internalizing, or nondisordered. High impulsivity and teacher-reported anger/frustration, and low effortful control, were associated with externalizing problems, whereas low effortful control and high parent-reported anger were predictive of internalizing problems. Unique prediction from effortful and reactive control was obtained and these predictors (especially when reported by teachers) often interacted with anger/frustration when predicting problem behavior classification.This research was supported by a grant from the National Institutes of Mental Health (2 R01 MH60838) to Nancy Eisenberg and an Earmarked Research Grant (CUHK4620/05H) of the Research Grants Council, Hong Kong Special Administrative Region, China, to Lei Chang.

In this study, we evaluated predictors of resilience among 8- to 12-year-old children recruited from primarily low socioeconomic status neighborhoods, 117 of whom suffered from clinical levels of conduct problems and/or depression, and 63 of whom suffered from no significant symptoms. Tests of interactions were conducted between (a) paternal antisocial behavior and maternal depression and (b) several physiological indices of child temperament and emotionality in predicting (c) children's conduct problems and depression. Both internalizing and externalizing outcomes among children were associated specifically with maternal melancholic depression, and not with nonmelancholic depression. In addition, low levels of respiratory sinus arrhythmia (RSA) among children conferred significant risk for depression, regardless of maternal melancholia, whereas high RSA offered partial protection. Furthermore, high levels of maternal melancholia conferred significant risk for child depression, regardless of paternal antisocial behavior, whereas low levels of maternal melancholia offered partial protection. Finally, low levels of electrodermal responding (EDR) conferred significant risk for conduct problems, regardless of paternal antisocial behavior, whereas high EDR offered partial protection. None of the identified protective factors offered complete immunity from psychopathology. These findings underscore the complexity of resilience and resilience-related processes, and suggest several potential avenues for future longitudinal research.

Two paradigms were developed to examine autobiographical memory (ABM) and suggestibility in children with autism spectrum disorder (ASD). Children with ASD (N = 30) and typically developing chronological age-matched children (N = 38) ranging in age from 5 to 10 years were administered an ABM questionnaire. Children were asked about details of current and past personally experienced events. Children also participated in a staged event, and later were provided with true and false reminders about that event. Later, children again were interviewed about the staged event. The results from both paradigms revealed that children with ASD showed poorer ABM compared to controls. Generally, their ABM was marked by errors of omission rather than by errors of commission, and memory was particularly poor for early-life events. In addition, they were as suggestible as the typically developing children. The results are discussed in terms of applied and theoretical implications.This project was supported by a grant from National Institutes of Health (RO1 HD39282) to M.B. Thanks to the many children, parents, teachers, and school staff who took time and interest in participating in this study. The assistance of Kendra Tannenbaum, Jennifer Betkowski, Katie Whittaker, and Liz Marave is greatly appreciated.

The rapidly moving study of Gene × Environment interaction (G × E) needs interim conceptual tools to track progress, integrate findings, and apply this knowledge to preventive intervention. We define two closely related concepts: the social mediation of the expression of genetic influences and the interaction between the entire genotype and the social environment (G × E). G × E, the primary focus of this report, assesses individual differences in the full genotype using twin, sibling, and adoption designs and, for the most part, employs fine-grained analyses of relational processes in the social environment. In comparison, studies of Allele × Environment interaction assess the influence on development of one or more measured polymorphisms as modified by environmental factors. G × E studies build on work showing how the social environment responds to genetic influences and how genetic influences shape the social environment. Recent G × E research has yielded new insight into variations in the sensitivity of the social environment to genotypic influences and provides clues to the specificity and timing of these environmental responses that can be leveraged to inform preventive interventions aimed at reducing genetic risk for problem behavior.