Continuity and discontinuity of behavioral inhibition and exuberance: psychophysiological and behavioral influences across the first four years of life

Four-month-old infants were screened (N = 433) for temperamental patterns thought to predict behavioral inhibition, including motor reactivity and the expression of negative affect. Those selected (N = 153) were assessed at multiple age points across the first 4 years of life for behavioral signs of inhibition as well as psychophysiological markers of frontal electroencephalogram (EEG) asymmetry. Four-month temperament was modestly predictive of behavioral inhibition over the first 2 years of life and of behavioral reticence at age 4. Those infants who remained continuously inhibited displayed right frontal EEG asymmetry as early as 9 months of age while those who changed from inhibited to noninhibited did not. Change in behavioral inhibition was related to experience of nonparental care. A second group of infants, selected at 4 months of age for patterns of behavior thought to predict temperamental exuberance, displayed a high degree of continuity over time in these behaviors.     

Reciprocal Influences among Adrenocortical Activation, Psychosocial Processes, and the Behavioral Adjustment of Clinic-Referred Children

The reciprocal effects among cognitive-behavioral, environmental, and biological influences on clinic-referred children's ( N = 64; 34 boys; M age 12.71 years) short-term psychological and psychiatric adjustment were studied. At clinic intake and 6 months later, standardized measures of adjustment and control-related beliefs were assessed. Before and after conflict-oriented parent-child interaction tasks the children's saliva was sampled. Adrenocortical responses (i.e., increases in salivary cortisol) to the social conflict task predicted children's internalizing problem behaviors and anxiety disorders at follow-up. Consistently high adrenocortical reactivity at intake and follow-up was associated with deflated social competence over the 6-month period. Also, specific patterns of discontinuity in children's internalizing behavior problems predicted individual differences in their subsequent adrenocortical responsiveness. Specifically, rising behavior problem levels across time predicted higher and declining behavior problem levels predicted lower adrenocortical reactivity at follow-up. Findings are among the first to suggest links among internalizing behavior problems, adrenocortical responsiveness to social challenge, and clinic-referred children's short-term cognitive-behavioral and emotional adjustment.     

Maternal self-efficacy and infant attachment: integrating physiology, perceptions, and behavior

48 mothers of 5-month-old infants were asked to estimate their control over the termination of an infant cry in a laboratory-simulated child-care task. Mothers who greatly overestimated their control differed from low or moderate "illusion-of-control" mothers by exhibiting a depression-prone attributional style, a depressed mood state, perceiving the father as participating less in child care, and responding to impending infant cries with heart-rate acceleration characteristic of aversive conditioning. At age 16 months, 40 of the mother-infant pairs participated in the Ainsworth Strange Situation. Insecure infant attachment at 16 months was associated with maternal perception of overcontrol, depressed mood state, and aversive conditioning to the impending cry in the laboratory task at the 5-month period.     

Activities and Interactions of Mothers and Their Firstborn Infants in the First Six Months of Life: Covariation, Stability, Continuity, Correspondence, and Prediction

Activities of primiparous mothers and infants were observed at 2 and 5 months of age during naturalistic interactions at home. 5 prominent features of mother and infant exchanges in this short-term longitudinal study are described and discussed in the context of 3 models of unique environment-development relations: covariation, stability, continuity, correspondence, and prediction. Generally, mothers' activities did not positively covary at either age, nor did those of infants. Some maternal activities were stable in this time period; some developmentally increased, and some developmentally decreased. Infants' activities were unstable, but most increased over time. Specific mother and infant activities corresponded, and over time mothers and infants influenced one another in specific ways. In the critical period of the first half year, infants appear to be flexible and plastic in their behavioral repertoires and are influenced by their mothers; mothers are somewhat consistent, but they also adapt to the behaviors of their infants.     

Observational,physiological, and self-report measures of children's anger: relations to reactive versus proactive aggression

The goal of this study was to examine the relations of reactive versus proactive aggression to children's anger, as assessed using observational, physiological, and self-report measures. Anger was hypothesized to be related to reactive aggression, but not to proactive aggression. Children (N = 272 second-grade boys and girls) participated in a procedure in which they lost a board game and prize to a confederate who cheated. Skin conductance reactivity and heart rate reactivity were measured throughout the procedure. Following the interaction, children viewed a videotape of the game and self-reported on their level of anger after each turn of the game. Observational coding of children's angry facial expressions and angry nonverbal behaviors was conducted. Reactive aggression, but not proactive aggression, was positively related to skin conductance reactivity and angry nonverbal behaviors, both at an aggregated level and in terms of rate of increase over the time span of the game.     

Enhanced handling and positioning in early infancy advances development throughout the first year

Behaviors emerge, in part, from the interplay of infant abilities and caregiver–infant interactions. Cross‐cultural and developmental studies suggest caregiver handling and positioning influence infant development. In this prospective, longitudinal study, the effects of 3 weeks of enhanced handling and positioning experiences provided to 14 infants versus control experiences provided to 14 infants at 2 months of age were assessed with follow‐up through 15 months of age. Behaviors in prone were immediately advanced. Short‐term advancements occurred in multiple behaviors, including prone, head control, reaching, and sitting behaviors. Longer term advancements, up to 12 months after the experience period, occurred in object transfer, crawling and walking behaviors. This suggests broad and long‐lasting changes can arise via brief periods of change in caregiver–infant interactions.     

The Relations among Infant Temperament, Security of Attachment, and Behavioral Inhibition at Twenty-Four Months

The purpose of this study was to examine the relations among infant temperament, attachment, and behavioral inhibition. 52 infants were seen at 2 days, 5, 14, and 24 months of age. Assessments were made of temperament at 2 days and 5 months of age, and attachment and behavioral inhibition were assessed at 14 and 24 months, respectively. EKG was recorded at each assessment, and measures of heart period and vagal tone were computed. Distress to pacifier withdrawal at 2 days of age was related to insecure attachment at 14 months. 2 types of distress reactivity at 5 months, reactivity to frustration and reactivity to novelty, were identified and related to high vagal tone. Attachment classification at 14 months was directly related to inhibited behavior at 24 months. Infants classified as insecure/resistant were more inhibited than those classified as insecure/avoidant. In addition, an interaction of infant reactivity to frustration and attachment classification was found to predict inhibition at 24 months. Infants classified as insecure/resistant and who had not cried to the arm restraint procedure at 5 months were the most inhibited at 24 months. These findings are discussed in terms of hypotheses regarding multiple modes of distress reactivity and regulation in early infancy and their different social and behavioral outcomes.     

Faculty and Community Partners in Gerontological Curriculum Enrichment

There is considerable confusion in the media and the public about healthy behaviors in contrast to “antiaging” behaviors designed to make one look “younger.” As an aid in clarifying the differences between these two types of behaviors, we have developed a questionnaire called the Health Behavior Inventory (HBI). We also wanted to estimate differences in the frequency of different types of behaviors, differences between older and younger respondents, and differences between men and women.

The HBI consists of 10 Healthy Behaviors and 10 Age Denial behaviors. We tested the HBI in a mailed survey to 250 older persons. The questionnaire was returned by 222 persons. We used Cronbach's alpha to test for consistency reliability of the two scales. Healthy Behaviors were reported much more often than Age Denials, but 1/3 reported 1 or more Age Denials. Younger persons and women tended to report substantially more Age Denials than men. The scales appear to have good face validity, and the Age Denials scale has fairly consistent internal reliability. The HBI appears to be a useful tool for research on the frequency and distribution of Healthy Behaviors and Age Denials among different groups of older persons. It may also be used in educational settings and the media for raising awareness of the need for more Healthy Behaviors and for reducing useless and dangerous types of Age Denials.     

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.     

Tympanic membrane temperature and emotional dispositions in preschool-aged children: a methodological study

Tympanic membrane (TM) temperature asymmetry has been proposed as a phenotypic marker of vulnerability to negative emotionality in children. Little is known about the stability of TM temperatures or how readily one can obtain a reliable index of the phenotype. TM temperatures were collected from 3- to 5-year-old children ( N =73) over 5 months ( Mdn= 34 samples). Seven to 10 samples needed to be aggregated to achieve reliable measures (αs>.70). Using reliable estimates, TM asymmetry remained stable over time, r (72)=.72, p< .01; 70% of the children had warmer left TMs; and TM asymmetry correlated as predicted with measures of children's emotionality. TM asymmetry may be a phenotypic marker of vulnerability to negative emotionality, but measures obtained on one occasion may not reliably index the phenotype.     

Parental sensitivity, infant affect, and affect regulation: predictors of later attachment

This longitudinal study on 94 families examined the extent to which parent sensitivity, infant affect, and affect regulation at 4 months predicted mother-infant and father-infant attachment classifications at 1 year. Parent sensitivity was rated from face-to-face interaction episodes; infant affect and regulatory behaviors were rated from mother-infant and father-infant still-face episodes at 4 months. Infants' attachment to mothers and fathers was rated from the Strange Situation at 12 and 13 months. MANOVAs indicated that 4-month parent and infant factors were associated with infant-mother but not infant-father attachment groups. Discriminant Function Analysis further indicated that two functions, "Affect Regulation" and "Maternal Sensitivity," discriminated infant-mother attachment groups; As and B1-B2s showed more affect regulation toward mothers and fathers than B3-B4s and Cs at 4 months, and mothers of both secure groups were more sensitive than mothers of Cs. Finally, the association between maternal sensitivity and infant-mother attachment was partially mediated by infant affect regulation.     

Do the effects of early severe deprivation on cognition persist into early adolescence? Findings from the English and Romanian adoptees study

Cognitive outcomes at age 11 of 131 Romanian adoptees from institutions were compared with 50 U.K. adopted children. Key findings were of both continuity and change: (1) marked adverse effects persisted at age 11 for many of the children who were over 6 months on arrival; (2) there was some catch-up between ages 6 and 11 for the bottom 15%; (3) there was a decrease of 15 points for those over 6 months on arrival, but no differentiation within the 6-42-month range; (4) there was marked heterogeneity of outcome but this was not associated with the educational background of the adoptive families. The findings draw attention to the psychological as well as physical risks of institutional deprivation.     

Conditions of Continuity and Discontinuity in Infant Negative Emotionality: Newborn to Five Months

This study investigated infant and caregiving-environment variables associated with continuity and discontinuity in infant negative emotionality between the newborn period and 5 months of age. Comparisons were made between groups of infants who evidenced similar levels of crying as neonates but differed by 5 months of age. For initially high-crying infants, mother personality traits, marital quality, and infant variables measured neonatally discriminated stable from changing infants. Ratings of mother sensitivity and infant responsiveness made at 5 months of age also related to continuity and discontinuity in negative emotionality over the first 5 months.     

Social Competence in the School Setting: Prospective Cross-Domain Associations among Inner-City Teens

In this 6-month prospective study of 138 ninth-grade inner-city students, associations among different aspects of school-based social competence were examined. In addition, links between initial emotional adjustment and subsequent social competence at school were explored. Aspects of social competence examined included academic achievement, peer reputation, and teacher-rated classroom behaviors. Emotional adjustment was measured based on self-reported internalizing and externalizing symptoms. Consonant with views positing continuity and coherence of development, high temporal consistency was found within each social competence domain. In addition, superior adjustment in one domain was sometimes associated with subsequent improvements in other spheres as well. Exceptions found to this pattern were that ( a ) both as an antecedent and as a consequent variable, peer-rated sociability was negatively linked with other indices of school-based functioning, and ( b ) among girls, high anxiety was related to improved performance at school over the year. Ecological influences in adolescent adjustment are discussed, and implications of the findings for future research are explored.     

Transition to child care: associations with infant-mother attachment, infant negative emotion, and cortisol elevations

Seventy 15-month-old infants were studied at home before starting child care, during adaptation (mothers present) and separation (first 9 days without mothers) phases, and 5 months later. Security of infant-mother attachment was assessed before and 3 months after child care began. In the separation phase, salivary cortisol rose over the first 60 min following the mothers' departures to levels that were 75% to 100% higher than at home. Compared with insecure infants, secure infants had markedly lower cortisol levels during the adaptation phase and higher fuss and cry levels during the separation phase, and their fuss and cry levels were significantly correlated with their cortisol levels. Attachments remained secure or became secure if mothers spent more days adapting their children to child care.     

Adults'' Tolerance of Cries: An Experimental Investigation of Acoustic Features

Variations in the aversiveness of a newborn's distress cry were examined using experimental manipulation of 3 acoustic features of the cry (fundamental frequency, intonation, spectral complexity) and of the information given to subjects about the infant's health status. The subjects (N = 164 medical students) were allowed to control the sound pressure level (range: 50 dB [A]-105 dB[A]) of the different cry versions by repeatedly pressing a button (operant titration). For the nonmanipulated (original) cry version, the accepted sound pressure level decreased as fundamental frequency increased at above 610 Hz. This effect was modified by experimental manipulation of spectral complexity as well as intonation. A preference of intonated cries over monotonous cries was most pronounced between 534 and 686 Hz. Significant interactions of the information variable with the intonation and the complexity variables suggest that the listener's reaction to certain physical cry characteristics can be altered substantially by inducing different cognitive sets.     

Continuity of individual differences in the mother-infant relationship from six to thirteen months

The current study searched for continuities in mother-infant interaction observed at home, maternally perceived infant difficultness, and infant developmental competency. Also assessed were the possible moderator variables of maternal report of satisfaction with adjustment to the infant and background characteristics, for example, SES, presence of other young children, and infant gender. 128 dyads were assessed at ages 6 and 13 months. Many of the variables used to evaluate continuity were composites based on factor analysis. Bivariate correlations between 6- and 13-month variables produced a complex picture. In broad overview, as predicted by the prior literature, they indicated some degree of stability for mother variables and markedly less for the infant variables. Canonical correlation analysis yielded 3 significant canonical variates, producing a more integrated picture. The dimensions of continuity revealed by these variates were (1) Affectionate, Intellectually Stimulating Mothering, which had modest-to-moderate links to the indexes of infant competence; (2) Infant Temperamental Difficultness, which was determined mainly by consistency in mother report on 2 age-adjusted versions of the Infant Characteristics Questionnaire but which also contained loadings for objectively observed infant fussing, crying, and social demandingness; and (3) an unnamed dimension which resembles a pattern of intense involvement, both positive and negative, seen in older, clinically referred families.     

Rigidity in Gender‐Typed Behaviors in Early Childhood: A Longitudinal Study of Ethnic Minority Children

A key prediction of cognitive theories of gender development concerns developmental trajectories in the relative strength or rigidity of gender typing. To examine these trajectories in early childhood, 229 children (African American, Mexican American, and Dominican American) were followed annually from age 3 to 5 years, and gender‐stereotypical appearance, dress‐up play, toy play, and sex segregation were examined. High gender‐typing was found across ethnic groups, and most behaviors increased in rigidity, especially from age 3 to 4 years. In addressing controversy surrounding the stability and structure of gender‐typing it was found that from year to year, most behaviors showed moderately stable individual differences. Behaviors were uncorrelated within age but showed more concordance in change across time, suggesting that aspects of gender‐typing are multidimensional, but still show coherence.     

The firstborn's adjustment to the birth of a sibling: a longitudinal assessment

41 middle-class families were interviewed at 1 month prepartum and 1, 4, 8, and 12 months after the birth of a second child to assess the reaction and adjustment of firstborn children to this event. Family members were also observed in a semistructured play session in order to obtain information concerning changes in familial interaction patterns. A log linear analysis was conducted to fit a hierarchical model to a 2 (child gender) X 2 (infant gender) X 4 (time of measurement relative to birth of infant) X 2 (presence or absence of problematic regressive behavior) X 14 (type of problematic behavior reported) matrix. A model with 2 statistically significant effects was found to fit the observed frequency matrix quite well, goodness-of-fit (GF) chi 2(312, N = 2,296) = 97.47, p less than .99. This model suggests (1) that the type of response displayed by the firstborns varied as a function of time since the birth; that their initial responses were either imitations of the infant or confrontations with the mother or infant, whereas responses at 4 months postpartum were characterized by numerous anxiety behaviors but fewer imitations or confrontations, and later responses were primarily confrontations with the increasingly intrusive and independent infant; and (2) that a greater frequency of problematic behavior was reported by the mothers of same-sex sibling dyads, especially at the 1- and 8-month postpartum assessments. Observational data indicated that mothers dramatically decreased their interactions with the firstborn children over time but that fathers tended to remain relatively stable in their frequencies of interaction.     

Does Day-care Experience Affect Young Children's Judgments of Home and School Rules?

The current study was designed to determine whether children's ability to distinguish moral rules from conventional school-based rules, and conventional home- based rules was affected by the amount of experience they had in day-care. Preschoolers (N = 42), ranging in age from 35 to 61 months, were interviewed about: (1) the legitimacy of authority to abolish a rule, (2) the accept- ability of behaviors that were permitted by an authority, and (3) the seriousness of behaviors that were prohibited by an authority. The results revealed that previous day-care experience did not affect children's judgments. Moral events were distinguished from conventional events on all questions. In addition, home-based conventional events were distinguished from school-based conventional events suggesting that children consider the social context in which conventional events occur.