Physiological self-regulation and information processing in infancy: cardiac vagal tone and habituation

This study investigates the role of physiological self-regulation (cardiac vagal tone) in information processing (habituation) in 81 infants. Nucleus ambiguus vagal tone (Vna, a measure of respiratory sinus arrhythmia) was used to index cardiac vagal tone. Physiological self-regulation was operationalized as the change in Vna from a baseline period of measurement to habituation. Decreases in Vna consistently related to habituation efficiency, operationalized as accumulated looking time (ALT), in all infants twice at 2 months and twice at 5 months; however, this relation was accounted for by infants who met an habituation criterion on each task. Among habituators, shorter lookers also had greater Vna suppression during habituation. Within-age and between-age suppression of vagal tone predicted ALT, but ALT did not predict suppression of vagal tone. Physiological self-regulation provided by the vagal system appears to play a role in information processing in infancy as indexed by habituation.     

The Role of Emotionality and Regulation in Children's Social Functioning: A Longitudinal Study

Multiple measures of children's emotionality (emotional intensity and negative affectivity), regulation (including attentional and behavioral regulation and coping), and social functioning (teachers' reports of nonaggressive/socially appropriate behavior and prosocial/socially competent behavior; and parents' reports of problem behavior) were obtained for 6–8-year-olds. In addition, emotionality, attentional regulation, and coping were assessed 2 years previously. Social functioning was expected to be predicted by low negative emotionality and high levels of regulation. In general, the data supported the predictions, although the findings for parent reports of problem behavior were primarily for boys. Prediction of social functioning from measures of regulation and emotionality occurred primarily within a given context (school vs. home) rather than across contexts, even though there were relations across reporters within the school or home context. In addition, vagal tone, a marker of physiological regulation, was positively related to competent social functioning and emotionality/regulation for boys, but inversely related for girls.     

Mother–Infant Vagal Regulation in the Face-To-Face Still-Face Paradigm Is Moderated by Maternal Sensitivity

Parents' physiological regulation may support infants' regulation. Mothers ( N = 152) and 6-month-old male and female infants were observed in normal and disrupted social interaction. Affect was coded at 1-s intervals and vagal tone measured as respiratory sinus arrhythmia (RSA). Maternal sensitivity was assessed in free play. Mothers and infants showed opposite patterns of RSA change. During disrupted interaction, mothers' RSA increased and infants' decreased, suggesting self-regulation of distress. During reunion, although the typical pattern was for infants to return to baseline levels, infants of sensitive mothers and sensitive mothers both showed a significant decrease in RSA from baseline. Mothers' and infants' physiological responses may be a function of mutual responsiveness.     

A Developmental Hierarchical-Integrative Perspective on the Emergence of Self-Regulation: A Replication and Extension

This study replicated and extended the Feldman (2009) study by applying the developmental hierarchical-integrative model to understand the emergence of self-regulation. Participants included 360 children (48.6% boys; 62.8% identified as Caucasian and 36.9% African American) and their families, predominantly from a low-income, rural background. Families completed assessments on child physiological, attention, emotion, and self-regulation when children were 6-, 15-, 24-, and 36-month-old, when caregiver sensitivity was observationally assessed. A path model revealed that child attention regulation at 6 months predicted physiological regulation at 15 months, and child attention regulation at 15 months predicted emotion regulation at 24 months. Attention regulation at 24 months predicted better self-regulation at 36 months. Notably, caregiver sensitivity moderated several developmental pathways. Findings support a continuous model of early self-regulation development and the ongoing individual-environment interplay in early childhood.     

Classroom Climate,Cardiac Vagal Tone,and Inhibitory Control: Links to Focused Attention in First Graders

The present study aimed to investigate the role of classroom climate and self‐regulation in terms of cardiac vagal tone and inhibitory control in primary school students' focused attention. A combination of direct and indirect measures was used to assess classroom climate, sustained and selective attention, and inattention behaviors among 62 first graders. We also registered students' cardiac vagal tone at rest and their levels of inhibitory control in a reaction time task. A single underlying factor combining sustained and selective attention as well as (the lack of) inattention behaviors accounted for students' focused attention. A regression analysis revealed that classroom climate, cardiac vagal tone, and inhibitory control interacted to explain first graders' focused attention. In classrooms with a negative climate, high levels of inhibitory control attenuated the negative effect of low cardiac vagal tone on students' ability to remain focused during classroom activities. Implications for theory and practice are discussed.     

Vagal Regulation in Breastfeeding Infants and Their Mothers

Consistent with the gustatory–vagal hypothesis, vagal stimulation during breastfeeding may contribute to infants' physiological regulatory development independent of caregiving effects. This study examined whether breastfeeding predicted 6‐month‐old infants' (N = 151) and their mothers' vagal regulation during the face‐to‐face still‐face (FFSF). Although breastfed and nonbreastfed infants showed expected vagal withdrawal during the Still‐Face episode, only breastfed infants showed continued withdrawal during the reunion episode, suggesting greater physiological mobilization to repair the interaction. Breastfeeding mothers showed higher vagal tone than nonbreastfeeding mothers at baseline, suggesting greater capacity for regulation, and throughout the FFSF, suggesting calmer states. Breastfeeding effects were independent of maternal sensitivity. Findings suggest that infants' and mothers' physiological regulation may be shaped by breastfeeding independently of associated social factors.     

Gene-environment contributions to the development of infant vagal reactivity: the interaction of dopamine and maternal sensitivity

This study investigated dopamine receptor genes (DRD2 and DRD4) and maternal sensitivity as predictors of infant respiratory sinus arrhythmia (RSA) and RSA reactivity, purported indices of vagal tone and vagal regulation, in a challenge task at 3, 6, and 12 months in 173 infant-mother dyads. Hierarchical linear modeling (HLM) revealed that at 3 and 6 months, RSA withdrawal in response to maternal separation was greater (suggesting expected physiological regulation) in infants without the DRD2 risk allele than those with the risk allele. At 12 months, infants with the risk allele who were also exposed to maternal sensitivity showed levels of RSA withdrawal comparable to infants who were not at genetic risk. Findings demonstrate the importance of developmental analysis of gene-environment interaction.     

Relations Between Effective Emotional Self-Regulation, Attentional Control, and Low-Income Preschoolers' Social Competence with Peers

Relations between children's emotional self-regulation, attentional control, and peer social competence (as reported by both teachers and peers) were examined for 51 low-income, preschool-aged children enrolled in Head Start. Using a short delay-of-gratification task administered at Head Start sites, children's use of self- distraction was found to be positively associated with their success in handling the delay, replicating previous, laboratory-based research. Contrary to our expectations, children's use of self-distraction was found to be unrelated to their attentional control, as assessed during a computer task. Hierarchical regression analyses revealed that children's use of self-distraction predicted significant variance in both peer- and teacher-reports of childrem's competence with peers, even after children's attentional control was statistically taken into account. These findings are discussed in light of current models of reactivity and regulation in predicting young children's social behavior, as well as in the context of early intervention efforts for children facing socioeconomic risk.     

Preliminary construct and concurrent validity of the Preschool Self-regulation Assessment (PSRA) for field-based research

This study introduces a portable direct assessment of young children's self-regulation—the Preschool Self-Regulation Assessment (PSRA). The PSRA was designed to assess self-regulation in emotional, attentional, and behavioral domains by using a brief, structured battery of tasks in conjunction with a global report of children's behavior. Factor analyses from a pilot sample (N = 63) of Head Start children revealed two self-regulation factors reflecting children's performance on tasks of impulse control and tasks of compliance/executive control. Assessor report of children's behavior during the assessment was reduced into two additional factors reflecting children's global attention/impulse control and positive emotion. Moderate correlations between self-regulation factors and children's social competence, behavior problems, and early academic skills, provide preliminary evidence of the new measure's validity, and additional empirical evidence for bivariate relations between academic and self-regulatory competence.     

Toward a developmental model of child compliance: the role of emotion regulation in infancy

The present study examined the relation between early emotion regulation and later compliance. When infants were 5, 10, and 18 months of age, they participated in a frustration task. The degree to which they reacted negatively to the stimuli and the behaviors they used to regulate that response were coded. Baseline heart rate also was recorded and a measure of cardiac vagal tone (VNA) was derived. Several tasks (electrode placement, toy clean-up, and test situation) were administered to elicit compliance/noncompliance when the participants were 30 months of age. Results revealed that infants who demonstrated low levels of regulatory behavior were more likely to be noncompliant as toddlers. Several interaction effects suggested that the prediction to later noncompliance was also dependent upon the infants' level of reactivity. Cardiac vagal tone also was related to compliance but in a contradictory fashion. High VNA was related to noncompliance to toy clean-up, whereas low VNA was related to noncompliance to electrode placement. The data provide support for a developmental model of compliance that includes the ability to regulate emotional arousal.     

Relations Between Effective Emotional Self-Regulation,Attentional Control,and Low-Income Preschoolers' Social Competence with Peers

Relations between children's emotional self-regulation, attentional control, and peer social competence (as reported by both teachers and peers) were examined for 51 low-income, preschool-aged children enrolled in Head Start. Using a short delay-of-gratification task administered at Head Start sites, children's use of self- distraction was found to be positively associated with their success in handling the delay, replicating previous, laboratory-based research. Contrary to our expectations, children's use of self-distraction was found to be unrelated to their attentional control, as assessed during a computer task. Hierarchical regression analyses revealed that children's use of self-distraction predicted significant variance in both peer- and teacher-reports of childrem's competence with peers, even after children's attentional control was statistically taken into account. These findings are discussed in light of current models of reactivity and regulation in predicting young children's social behavior, as well as in the context of early intervention efforts for children facing socioeconomic risk.     

Prediction of elementary school children's externalizing problem behaviors from attentional and behavioral regulation and negative emotionality

The purpose of this study was to examine the moderating role of individual differences in negative emotionality in the relations of behavioral and attentional (emotional) regulation to externalizing problem behaviors. Teachers' and one parent's reports of children's regulation (attentional and behavioral), emotionality, and problem behavior were obtained when children were in kindergarten to grade 3 and two years later (N = 169; 146 in major analyses); children's behavioral regulation also was assessed with a measure of persistence. According to the best fitting structural equation model, at two ages behavioral dysregulation predicted externalizing behavior problems for children both high and low in negative emotionality, whereas prediction of problem behavior from attentional control was significant only for children prone to negative emotionality. There were unique, additive effects of behavioral and attentional regulation for predicting problem behavior as well as moderating effects of negative emotionality for attentional regulation.     

Vagal Suppression Buffers Against the Negative Effects of Psychological Inflexibility on Parenting Behaviors in Combat Deployed Fathers

SYNOPSIS

Objective : Vagal suppression is a parasympathetic physiological indicator of emotion regulation and social engagement behaviors, often measured via heart rate variability. Experiential avoidance reflects psychological inflexibility or poor emotion regulation. We tested the interaction effects of parental vagal suppression and experiential avoidance on observed parenting behaviors among combat deployed fathers. Design . We analyzed data from 92 male National Guard/Reserve members who had returned from a deployment to Iraq and/or Afghanistan since 2001. They were mostly European American, in their 30s, middle-class, and married. All fathers participated in home-based assessments with their spouses (if married) and a target child aged 4–13 years. Fathers’ vagal suppression was measured as the decrease in cardiac vagal tone (i.e., high frequency heart rate variability) from a neutral reading task to a father-child conflict resolution task. Experiential avoidance was self-reported. Parenting behaviors were observed during family interaction tasks and coded into positive engagement and withdrawal avoidance using a macro-level coding system. Results . Multiple regression analysis showed no main effects of vagal suppression on observed parenting, but interaction effects of experiential avoidance by vagal suppression on observed parenting. Specifically, among fathers with higher vagal suppression, we found no relations between experiential avoidance and observed parenting; among fathers with lower vagal suppression, we found an inverse association between experiential avoidance and positive engagement as well as a positive association between experiential avoidance and withdrawal avoidance. Conclusions . The effect of psychological inflexibility on military fathers’ parenting behaviors was moderated by vagal suppression. The findings have implications for the linkage between emotion regulation and parenting in military fathers.     

婴儿视觉注意的发展

近年来，研究对婴儿的视觉注意进行了大量研究，得到很多有价值的发现。这些发现围绕婴儿注意功能的4个方面，即警觉、空间定向、对物体特征的注意和内源性注意，描述了婴儿视觉注意的发展过程．婴儿出生时，身上已分化出各种注意功能的初级形式，但是，每种注意功能都有不同的发展时期。主要表现在：从出生到2个月，婴儿的警觉状态发生并发展；从2或3个月6个月左右，婴儿的空间定向和物体注意功能有很大的变化；从5或6个月以后，婴儿的内源性注意功能变化明显。     

Newborn pain cries and vagal tone: parallel changes in response to circumcision

Clinical studies have demonstrated that the cries of chronically stressed, medically compromised infants are characteristically higher and more variable in pitch than those of healthy infants. Other studies have indicated that the vagal tone of chronically stressed infants is significantly reduced in comparison to that of normal infants. A neural model of cry production has been proposed which suggests that decreased vagal tone among infants at risk may, in fact, be related to these increases in cry pitch. Using routine, unanesthetized circumcision as a model of stress, we were able to examine the relation between cry acoustics and vagal tone in normal, healthy newborns undergoing an acutely stressful event. Vocalizations, heart, and respiratory waveforms were continuously recorded from 49 (32 experimental; 17 control) 1-2-day-old, full-term infants during preoperative, surgical, and postoperative periods. Vagal tone, as measured by the amplitude of respiratory sinus arrhythmia extracted from heart period data, was significantly reduced during the severe stress of circumcision, and these reductions were paralleled by significant increases in the pitch of the infants' cries. In addition, individual differences in vagal tone measured prior to circumcision surgery were predictive of physiological and acoustic reactivity to subsequent stress. These results emphasize the potential role of vagal control of the autonomic nervous system during stress.     

Exposure to Interparental Conflict and Children''s Adjustment and Physical Health: The Moderating Role of Vagal Tone

Physiological regulation, as indexed by baseline vagal tone and delta vagal tone (the change in vagal tone during an attention-demanding or challenging task), was examined as a moderator in the relations between exposure to verbal and physical parental marital conflict and children's adjustment and physical health. Higher vagal tone was posited to serve a protective function (i.e., buffer) for children exposed to higher levels of marital conflict. Seventy-five 8- to 12-year-olds and their mothers completed measures of parental conflict, and children's adjustment and physical health. Children's vagal tone was assessed during baseline conditions and during exposure to an audiotaped interadult argument. Results indicate that higher vagal tone buffered children against increased externalizing, internalizing, and health problems related to exposure to more frequent marital conflict, especially verbal conflict. Further, higher levels of delta vagal tone protected boys against externalizing problems associated with verbal conflict, and health problems associated with physical conflict.     

The Relations of Children's Dispositional Prosocial Behavior to Emotionality, Regulation, and Social Functioning

The purpose of this study was to examine the relations of a measure of children's dispositional prosocial behavior (i.e., peer nominations) to individual differences in children's negative emotionality, regulation, and social functioning. Children with prosocial reputations tended to be high in constructive social skills (i.e., socially appropriate behavior and constructive coping) and attentional regulation, and low in negative emotionality. The relations of children's negative emotionality to prosocial reputation were moderated by level of dispositional attentional regulation. In addition, the relations of prosocial reputation to constructive social skills and parent-reported negative emotionality (for girls) increased with age. Vagal tone, a marker of physiological regulation, was negatively related to girls' prosocial reputation.     

Development of emotional and behavioral regulation in children born extremely preterm and very preterm: biological and social influences

This study describes the development of emotional and behavioral regulation in a regional cohort of children born extremely preterm (<28 weeks gestational age, n = 39), very preterm (<34 weeks gestational age, n = 56), and full term (n = 103). At 2 and 4 years, children born at younger gestational ages demonstrated poorer self-regulation across multiple contexts spanning observed interactions, formal cognitive testing, and parental report of child behavior at home. Among children born preterm, the 2 strongest predictors of impairments in self-regulation were the presence of moderate-to-severe cerebral white matter abnormalities on neonatal magnetic resonance and a less sensitive parenting style when children were aged 2 years. Findings support the importance of early neurological development and parenting for developing regulation in children born very preterm.     

Early Attachment Relationships as Predictors of Preschool Children's Emotion Regulation with a Distressed Sibling

The present study examined (1) the emotion regulation of preschool children by observing their emotional responses to a distressed younger sibling during a separation episode; (2) whether children's regulatory responses were related to sibling interaction observed during the separation episode, and (3) whether individual differences in these children's regulatory responses and the quality of sibling interaction could be predicted from early attachment relationships. Older siblings who ignored their younger siblings' distress were more likely to experience personal distress and use avoidant coping strategies. Emotion regulation strategies were related to the quality of sibling interaction such that older siblings who offered comfort to a distressed younger sibling were more likely to express positive affect in sibling interaction, whereas older siblings seeking adult assistance were less likely to engage in conflict and hostile behavior with a younger sibling. Preschool children who had an insecure-resistant infant-mother attachment at 1 year, were more likely to seek comfort from their younger siblings and engaged in more sibling conflict and hostility when they were 4 years old. The quality of infant-father attachment relationships was not significantly related to the child's emotion regulation at 4 years of age. Results are discussed with respect to the social origins of preschool children's emotional self-regulation and the consequences of emotional dysregulation in preschool settings.     

Early Attachment Relationships as Predictors of Preschool Children's Emotion Regulation with a Distressed Sibling

The present study examined (1) the emotion regulation of preschool children by observing their emotional responses to a distressed younger sibling during a separation episode; (2) whether children's regulatory responses were related to sibling interaction observed during the separation episode, and (3) whether individual differences in these children's regulatory responses and the quality of sibling interaction could be predicted from early attachment relationships. Older siblings who ignored their younger siblings' distress were more likely to experience personal distress and use avoidant coping strategies. Emotion regulation strategies were related to the quality of sibling interaction such that older siblings who offered comfort to a distressed younger sibling were more likely to express positive affect in sibling interaction, whereas older siblings seeking adult assistance were less likely to engage in conflict and hostile behavior with a younger sibling. Preschool children who had an insecure-resistant infant-mother attachment at 1 year, were more likely to seek comfort from their younger siblings and engaged in more sibling conflict and hostility when they were 4 years old. The quality of infant-father attachment relationships was not significantly related to the child's emotion regulation at 4 years of age. Results are discussed with respect to the social origins of preschool children's emotional self-regulation and the consequences of emotional dysregulation in preschool settings.