Infant attachment strategies, infant mental lag, and maternal depressive symptoms: predictors of internalizing and externalizing problems at age 7

The predictive relations between assessments in infancy and parent- and teacher-reported behavior problems at age 7 were investigated within a low-income sample. Infancy assessments indexed family adversity, parent-infant interaction at home, infant attachment, infant anger-distress at home, gender, and cognitive functioning. Among children at age 7 identified by teachers as highly externalizing, 83% were both disorganized in their attachment behavior in infancy and below the national mean in mental development scores at 18 months, compared with 13% of nonexternalizing children. Avoidant attachment behavior in infancy was associated with later internalizing symptoms rather than with externalizing symptoms. The behavior problem data reported by mother suggested the possibility of attachment-related biases in maternal report data. The results indicate that child mental lag in the context of a disorganized attachment relationship constitutes 1 early step on the pathway to school-age externalizing behavior.     

Les conversations mère-enfant et l'attachement des enfants à la période préscolaire.

This study examines whether mother-child conversation patterns are associated with child attachment classifications at preschool age (N=80). Results revealed that a child's discourse style is similar to that of her or his mother. In comparison with mothers of insecure ambivalent or disorganized children, mothers of secure children made more frequent verbal statements that elaborated emotional content. Mothers of avoidant children were more inclined to minimize emotional content than mothers of secure children. In comparison with other mothers, those with a disorganized child were sharing more frightening and hostile content, or made more verbal statements accompanied by aggressive behaviors. Secure children made more frequent verbal statements that elaborated emotional content than avoidant and disorganized children. Disorganized children made more controlling verbal statements as well as statements accompanied by aggressive or flight behaviors. Finally, our results showed that child capacity to elaborate emotional experiences partially mediated the link between maternal capacity to elaborate emotional content and child security of attachment. Our results emphasize the importance of mother-child conversational exchanges for the development of attachment in preschool children. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A threshold approach to understanding the origins of attachment disorganization.

Disorganized attachment in infancy is known to predict a wide range of maladaptive outcomes, but its origins are poorly understood. Parental lack of resolution concerning loss or trauma has been proposed to result in atypical parenting behaviors, which in turn have a disorganizing effect on the parent-child relationship. The authors review the evidence for this transmission pathway, considering other factors (e.g., social environment, child characteristics) that might enrich understanding of the antecedents of disorganization. A threshold approach is proposed to explain (a) why different parental behaviors are linked to disorganization depending on prevailing social conditions and (b) why certain children appear more vulnerable to forming a disorganized attachment relationship. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Childhood depression and conduct disorder: II. An analysis of family interaction patterns in the home.

Directly sampled the interaction patterns of families with depressed (DEP), conduct-disordered (CD), mixed DEP-CD, and comparison children (aged 7–14 yrs) in the homes during the evening meal. Observational measures were taken of positive and aversive behaviors and affect expression for both parents, the referred children, and their siblings. Results replicated previous research showing that CD children express high levels of aversive behavior and anger and are part of a family system marked by conflict and aggression. The DEP children were exposed to maternal aversiveness but did not show any evidence of elevated levels of anger or aversiveness. Surprisingly, this was also true for the mixed-disorder children. High levels of depression in both groups of DEP children were associated with low levels of conflict and anger in family members. Overall, siblings showed very similar patterns of behavior and were exposed to similar patterns of parental behavior as the referred children. Results are discussed in terms of family models that emphasize the function of aggression and depression in the maintenance of child psychopathology. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Characterization of protease(s) in adults of Trichuris globulosa (Nematoda: Trichuridae)

PURPOSE: To identify the family and child determinants of aggressive behaviour in Nigerian elementary school boys and to compare the findings with previous ones from Western studies. METHODS: Forty-seven aggressive boys from four elementary schools in Lagos, Nigeria were compared with 47 matched pro-social boys. Teacher rating and peer nomination were combined to select subjects. The subjects and their parents were given structured questionnaires to obtain information on possible risk factors for aggression. RESULTS: Compared with pro-social boys, it was found that significantly more aggressive boys came from polygamous families and crowded homes, had more siblings, received less parental affection, were more physically punished, less supervised at home, witnessed more domestic conflicts, did poorly at school, had poorer verbal intelligence and attributed malice more readily than pro-social boys. Logistic regression indicated that the independent family predictors of aggression were crowding, little paternal affection, and corporal punishment. The independent child predictors were biased attribution and poor school achievement. Corporal punishment at school was also an independent predictor of aggression. CONCLUSIONS: The family and child determinants of aggressive behaviour in Nigeria are similar to those found in Western studies except for the small contribution of family instability and overwhelming influence of corporal punishment in our sample. Models of intervention developed in the West may therefore be cautiously applied to Nigerian children.     

Gender differences in the reciprocal relationships between parental physical aggression and children's externalizing problem behavior in China.

The study examines gender differences in the reciprocal relations between parental physical aggression and child externalizing problem behavior in China. Four hundred fifty-four Chinese elementary school-age children reported on three forms of their parents' physical aggression toward them (i.e., mild corporal punishment, severe corporal punishment, and physical abuse) and their externalizing problem behavior at two time points, 6 months apart. Structural equation modeling revealed that the three types of parental physical aggression predicted child externalizing problem behavior for girls but not boys, whereas child externalizing problem behavior predicted severe corporal punishment and physical abuse for boys but not girls; child externalizing problem behavior did not predict mild corporal punishment for either gender. The findings suggest that the intervention for and prevention of child externalizing problem behavior may be somewhat different for boys and girls in China. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Relation entre l'attachement et les interactions mère-enfant en milieu naturel et expérimental à l'age scolaire.

The purpose of the present study is to examine the relation between quality of mother-child interaction in a lab and home setting, and quality of attachment of school-age children. A second objective of the study is to evaluate the associations between quality of mother-child interactions, attachment and maternal psychosocial measures (social support, depression, and parental stress). Security of attachment (Separation-Reunion procedure, Main & Cassidy, 1988) and the quality of mother-child interaction was evaluated for a sample of 38 children (mean age = 6 years). Mothers also completed self-report measures for depression, stress, and social support. Concurrent to the lab assessment, quality of mother-child interaction was also evaluated during a home visit. Results indicated a strong association between interactive patterns in both settings. Moreover, interactive patterns differed in terms of attachment classification with secure children showing the most harmonious patterns and disorganized/controlling children showing the most dysfunctional patterns. Maternal psychosocial measures were not related to child security of attachment, but mothers of insecure children reported marginally more stress related to the child. Maternal psychosocial adjustment was, in part, related to dyadic mother-child interaction in the home and lab setting. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Attachment at Early School Age and Developmental Risk: Examining Family Contexts and Behavior Problems of Controlling-Caregiving, Controlling-Punitive, and Behaviorally Disorganized Children.

Preschool to school-age trajectories of 242 children, including 37 with insecure-disorganized and 66 with insecure-organized attachment patterns, were examined. Child attachment and stressful life events (the latter retrospectively) were measured at ages 5-7, and mother-child interactive quality, parenting stress, marital satisfaction, and teacher-reported behavior problems were evaluated concurrently and 2 years earlier. Results indicated that all three disorganized subgroups had poorer mother-child interactive patterns and more difficult family climates than secure or insecure-organized children. The controlling-punitive group showed significant increases in maternal reports of child-related stress between preschool and school age. The controlling-caregiving group showed greater likelihood of loss of a close family member, and mothers of the insecure-other group reported lower marital satisfaction and greater likelihood of their own or a spouse's hospitalization. Controlling-punitive children had higher externalizing scores, and controlling-caregiving children higher internalizing scores, than secure children. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Early relationships and the development of aggression in children

The development of abnormally aggressive human behavior is complex and multifactorial. Aggressive patterns of behavior often begin early in life and, once established, are notorious for their resistance to change, which has led some to believe that environmental interventions offer little hope for significant reductions in the prevalence of violent behavior in our society. Recent findings from research in the field of developmental psychopathology, however, have shed some new light on this very old problem. This paper specifically reviews the attachment literature and interprets it in the context of what has already been learned from research in epidemiology and behavioral genetics on environmental contributions to aggression over the life span. Environmental factors may influence the development of aggression by affecting children's early relationships with primary caregivers or by limiting opportunities for children to engage in positive relationships with caring adult figures. Longitudinal studies directly correlating early attachment relationships with levels of aggression in later childhood have been limited in number but suggest that insecure early attachment relationships may predispose children to the development of abnormally aggressive behavior, particularly when such relationships represent the entirety of their early social experience. Interventions aimed at either enhancing parent-child relationships or providing opportunities for alternative relationships with caring adult figures, particularly in high-risk settings, may help to prevent abnormally aggressive behavioral outcome.     

Le r?le des interactions mère-enfant et de la dépression maternelle à l'age préscolaire dans la prédiction de l'attachement de l'enfant à l'age scolaire.

Examined the contribution of mother–child partnership and maternal depression during the preschool period to the prediction of the child's attachment classification at early school-age in 91 French-Canadian children. Mother–child interactions were observed during a collaborative task using a scale measuring synchronized and reciprocal social-affective exchanges in the mother-child partnership (age 3–5 yrs). Maternal depression was assessed during the same lab visit using the Beck Depression Inventory. At a second lab visit (age 5–7 yrs), attachment classifications were assigned on the basis of reunion behaviour. A discriminant function analysis showed that reciprocal mother–child partnerships in the absence of maternal depressive symptom predicted security of attachment two years later, whereas failed reciprocity in the presence of maternal depressive symptoms predicted both insecure disorganized and ambivalent attachment. Quality of prediction is high for secure, ambivalent and disorganized children, although ambivalent and disorganized children cannot be distinguished from each other. Results support the importance of mother–child interactions and maternal depression as preschool variables associated with security and insecurity of attachment at early school-age. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Development of chicken embryos exposed to an intermittent horizontal sinusoidal 50 Hz magnetic field

Attachment theory provides a rich theoretical framework for research and intervention in child abuse. This paper examines the central role of internal working models in the development of child-parent relationships. Mental representations of child attachment (in infancy and middle childhood), adult attachment and parental caregiving are discussed in light of the adaptational deficits that researchers have found to be associated with attachment insecurity. A reconceptualization of the link between insecurity and child abuse is described, highlighting disorganized attachment. Implications for child abuse intervention are discussed.     

Nonmaternal care in infancy and emotional/behavioral difficulties at 4 years old: Moderation by family risk characteristics.

The authors examined the role of familial risk and child characteristics in the association between the type of child care in infancy (maternal care [MC]) versus nonmaternal care [NMC]) and emotional/behavioral difficulties at 4 years old. Canadian families (N=1,358) with children between 1 and 12 months old were followed over 4 years. Family risks were found to moderate the association between type of child care and physical aggression. MC in infancy was associated with lower levels of physical aggression among children from a low-risk family background but not among those from a high-risk family background. The effect size was small (d=-0.16; confidence interval [CI]=-0.3, -0.01). Family risk and the sex of the child moderated the association between child care and emotional problems. MC in infancy was associated with a lower level of emotional difficulties among girls from low-risk families but not among boys or among children from high-risk families. The effect size was moderate (d=-0.44; CI=-0.65, -0.23). The study indicates that the effect of child care type in infancy varies by family and child characteristics. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Psychometric properties of family members' reports of parental physical aggression toward clinic-referred children.

This study examined (a) differences among mothers', fathers', and children's reports of parental physical aggression toward children; (b) the reliability and validity of family members' reports of aggression using confirmatory factor analysis; and (c) the discriminant validity of the construct of mother–child and father–child aggression. Participants were 72 dual-parent families in which the parents were seeking clinical services for their children's (ages 7–9 years) conduct behavior problems. Each participant completed the parent–child version of the Conflict Tactics Scale (P-CTS). Results indicate that children reported lower levels of mother–child and father–child aggression than either mothers or fathers reported. Although the reliability (total systematic variance accounted for by observed variables) of family members' reports on the P-CTS ranged from moderate to high, convergent validity was generally low. The constructs of mother–child and father–child aggression were highly correlated but could be distinguished from each other when relationships among rater effects were considered. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Coparental and family group-level dynamics during infancy: early family precursors of child and family functioning during preschool

This study examines longitudinal correlates of coparental and family group-level dynamics during infancy. Thirty-seven couples observed at play with their 8-11-month-old infants (15 boys, 22 girls) rated their child's internalizing and externalizing symptoms, and their own coparenting behavior 3 years later. Teachers also rated child behavior at the 3-year follow-up. Several significant relationships emerged between observed family process (high hostility-competitiveness, low family harmony, and high parenting discrepancies in the triad) at Time 1, and subsequent reports of child and coparenting behavior at Time 2. Larger parenting discrepancies at Time 1 predicted greater child anxiety as rated by teachers; greater hostility-competitiveness and lower harmony forecast higher child aggression. Time 1 family process continued to predict Time 2 aggression even after controlling for individual and marital functioning. Several links were also found between distressed family process and later parental reports of negative coparenting behavior. These parental reports of coparenting also explained unique variance in concurrent child behavior ratings. The significance of coparenting as a distinct family construct is discussed.     

Roles of estrogen receptor-alpha gene expression in reproduction-related behaviors in female mice

The role of gene expression of the estrogen receptor-alpha form (ER alpha) in the regulation of female reproductive behavior was investigated in estrogen receptor knockout (ERKO) mice, deficient specifically for the ER alpha, but not the ER beta, gene. Estrogen- or estrogen- plus progesterone-treated gonadectomized ERKO mice did not show any lordosis response. Detailed behavioral analysis revealed that ERKO females were also deficient in sexual behavioral interactions preceding the lordosis response. They were extremely rejective toward attempted mounts by stud male mice, which could not show any intromissions. During resident-intruder aggression tests, gonadally intact ERKO females were more aggressive toward female intruder mice than wild-type (WT) mice. Gonadectomy did not influence the levels of aggressive behavior, and their genotype differences when mice were tested both before and after gonadectomy. However, when mice were tested after gonadectomy for the first time, very few ERKO mice showed aggression. In contrast to aggression, male-type sexual behavior shown by resident mice toward female intruder mice during aggression tests was not different between ERKO and WT mice and was completely abolished after gonadectomy of the resident mice. Finally, it was also found that ERKO females showed greatly reduced levels of parental behavior toward newborn pups placed in their home cage. These changes in parental behavior were not influenced by gonadectomy. ERKO females retrieved significantly fewer numbers of pups with longer latencies compared with wild-type (WT) or heterozygous (HZ) littermates when they were tested as gonadally intact or 20-65 days after gonadectomy. In addition, during parental behavior tests, a significantly higher percentage of ERKO mice exhibited infanticide compared with WT and HZ mice, which rarely showed infanticide. Taken together, these findings suggest that ER alpha gene expression plays a key role in female mice, not only for sexual behavior but also for other interrelated behaviors, such as parental and aggressive behaviors. In addition, persistence of genotype differences in parental and aggressive behavior after gonadectomy indicates that ER alpha activation during neural developmental processes may also be involved in the regulation of these behaviors.     

Attachement et problèmes de comportements intériorisés et extériori?s auto-rapportés à la période scolaire.

The association between attachment and self-reported externalizing and internalizing behavior problems was examined for a diverse SES French-Canadian sample of 108 children. Attachment classifications were assigned on the basis of reunion behavior with mother when the children were approximately 6 years old. Child problem behavior was assessed two and a half years later using the Dominic test. Results indicated that boys with disorganized attachment and children with ambivalent attachment reported a higher level of externalizing problems then did secure children. Moreover, disorganized children also reported a higher level of internalizing problems than secure children. Child assessments using the Dominic in conjunction with a measure of separation-reunion behavior at age 5 to 7 can play an important role in the identification of school-aged children at risk for aggressive or anxious-depressive adaptive problems. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Child responses to parental conflict and their effect on adjustment: A study of triadic relations.

The purpose of this study was to examine child response patterns to parental conflict and assess their contribution to child functioning. The focus was on 3 potential child responses and their relation to later depressive and aggressive behavior. Direct observations and questionnaire data were collected on 156 2-parent families. Aggressive behavior showed the strongest sequential relation to interparental conflict and the strongest predictive relation to increased aggressive functioning. Gender differences were found in the use of child aggressive response patterns. Results for the relation between child responses and increases in depressive functioning were weaker than those found for aggressive functioning. The results provide support for the examination of child response patterns as a potentially rich area of exploration for understanding the family mechanisms affecting both aggressive and depressive functioning in children. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Agressivité et statut auprès des pairs chez les gar?ons du primaire: un examen de la règle de dissimilarité.

Studied the influence of the value attached to aggression by a peer group on the relationship between aggression and peer status. Human Ss: 171 normal male Canadian school-age children (mean age 8 yrs) (3rd-grade students from 14 classes). 106 normal male Canadian school-age children (mean age 10 yrs) (5th-grade students from 9 classes). Ss completed interviews, questionnaires, and peer nomination inventories to assess their peer status and attitudes toward aggression (ATA). Teachers filled out a behavior problem checklist for each S. Interactions between aggressive behavior and peer status were analyzed, and for each grade level, results from the 3 classes with the highest group ATA scores were compared to results from the 3 classes with the lowest group ATA scores. (English abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Correlates of attachment at school age: maternal reported stress, mother-child interaction, and behavior problems

The contribution of attachment, maternal reported stress, and mother-child interaction to the prediction of teacher-reported behavior problems was examined for a French-Canadian sample of 121 school-age children. Attachment classifications were assigned on the basis of reunion behavior with mother when the children were between 5 and 7 years of age. Maternal reported stress and mother-child interaction patterns were assessed concurrent to the attachment measure, whereas behavior problems were evaluated both at ages 5 to 7 and 7 to 9 years. Security of attachment significantly predicted the likelihood of school-age behavior problems: Controlling/other children were most at risk for both externalizing and internalizing problems across both age periods. Younger ambivalent children presented clinical cut-off levels of externalizing problems, and older avoidant boys had higher internalizing scores. Patterns of maternal-reported stress and mother-child interaction differed across attachment groups and contributed to prediction of school-age behavior problems, partially mediating the relation between attachment and adaptation. Results support the importance of attachment in explaining school-age adaptation and validity of attachment coding for children of this age.     

Marital and severe parent-to-adolescent physical aggression in clinic-referred families: Mother and adolescent reports on co-occurence and links to child behavior problems.

This study examined the interplay of marital and severe parental physical aggression, and their links to child behavior problems, in 232 families of clinic-referred adolescents. Combined reports from mothers and adolescents indicated that two thirds of adolescents exposed to marital aggression in the past year had also experienced parental aggression. Mothers and fathers who used and/or were victims of marital aggression were both more likely to direct aggression toward their adolescent. Mother and youth reports of marital aggression were tied to each party's report of greater externalizing problems and to youth reports of greater internalizing problems. Severe parental aggression uniquely predicted maternal reports of both behavior problems, after controlling for marital aggression; the reverse was not true. Also, adolescents exposed to both types of family aggression did not display greater maladjustment than those subjected to only one type of family aggression. (PsycINFO Database Record (c) 2010 APA, all rights reserved)