Loneliness in Infancy: Harry Harlow, John Bowlby and Issues of Separation

In this contribution, the authors give an overview of the different studies on the effect of separation and deprivation that drew the attention of many in the 1940s and 1950s. Both Harlow and Bowlby were exposed to and influenced by these different studies on the so called ‘hospitalization’ effect. The work of Bakwin, Goldfarb, Spitz, and others is discussed and attention is drawn to films that were used to support new ideas on the effects of maternal deprivation.

Maternal Modeling and the Acquisition of Fear and Avoidance in Toddlers: Influence of Stimulus Preparedness and Child Temperament

The aim of the present study was to investigate the influence of maternal modeling on the acquisition of fear and avoidance towards fear-relevant and fear-irrelevant, novel stimuli in a sample of 71 toddlers. Children were shown a rubber snake or spider (fear-relevant objects) and a rubber mushroom or flower (fear-irrelevant objects), which were alternately paired with either negative or positive expression by their mothers. Both stimuli were presented again after a 1- and a 10-min delay, while mothers maintained a neutral expression. The toddlers showed increased fear and avoidance of the objects following negative reaction from their mothers than following positive maternal expression. This was similarly true for both fear-relevant and fear-irrelevant stimuli. In addition, no association was found between child temperament and behavioral responses and a weak association emerged between child temperament and emotional responses. The results demonstrate that young children can rapidly form conditioned emotional and behavioral responses via maternal reactions regardless of stimulus preparedness or child temperament. It is suggested that early maternal modeling may be relevant to a broad spectrum of fearful reactions.     

Maternal ratings of infant regulatory competence from 6 to 12 months: influence of perceived stress, birth-weight, and intervention: a randomized controlled trial

Mothers’ reports of preterm and term infants’ temperament from 6 to 12 months of age were studied, with intervention and stress as predictors. Preterm infants with a birth weight <2000 g were randomized to an intervention (71) or a control (69) group. A control group of healthy term infants (74) was also established. The intervention was a modified version of the “Mother–Infant Transaction Program”, aimed at sensitizing caregivers to the infants’ individual characteristics. Temperament was measured with the Infant Behavior Questionnaire, and stress with the Parenting Stress Index. There were no group differences in temperament at 6 or 12 months or in change during the same period. There was a strong association between stress and negative reactivity in the preterm control group at 12 months. In the preterm intervention group, there were strong negative correlations between stress and regulatory competence at 6 months. The intervention seemed to change the relationship between stress and temperament. The strength of this association indicates that the intervention sensitized mothers to the temperamental regulatory competence of their preterm infants.     

Examining the Link Between Infant Attachment and Child Conduct Problems in Grade 1

Abtract  We examined the extent to which infant attachment status is directly related to child conduct problems 6 years later, and assessed the potential mediating roles of hostile parenting and maternal depression. The sample included 84 adolescent mothers and their children (45 girls, 39 boys). Infant attachment status was assessed using the Strange Situation when the study children were 1-year-old. Hostile parenting was coded during a parent–child interaction task when the study children were 4.5-years-old. Maternal depression was self-rated, also when the study children were 4.5-years-old, using the Beck Depression Inventory. Mothers reported child conduct problems at Grade 1 on the Child Behavior Checklist. Infant attachment status at 1 year of age was directly related to child conduct problems but not to hostile parenting or maternal depression. Neither hostile parenting nor maternal depression mediated the relationship between infant attachment status and child conduct problems. However, the pattern of relations differed by attachment security. For securely attached children, maternal depression, but not hostile parenting, was directly related to conduct problems. For insecurely attached children, hostile parenting, but not maternal depression, was directly related to child conduct problems. Implications for intervention and future research are discussed.     

Child Psychosocial Adjustment and Parenting in Families Affected by Maternal HIV/AIDS

Child adjustment and parenting were examined in twenty-three 9–16-year-old youth from families affected by maternal HIV infection and 20 same-age peers whose mothers were not infected. Children whose mothers were seropositive reported significantly more externalizing problems. Infected mothers reported less age-appropriate supervision/monitoring relative to non-infected mothers. Better mother-child relationship quality and less impairment in parental supervision/monitoring of age-appropriate youth behaviors were associated with fewer externalizing difficulties among the HIV-positive group only. Similarly, only among HIV-infected mothers was refraining from engaging in inconsistent disciplinary tactics associated with lower reports of internalizing and externalizing problems. These data highlight the promise of programs targeting parenting skills to prevent or ameliorate child difficulties.     

Neonatal tactile stimulation enhances spatial working memory, prefrontal long-term potentiation, and D1 receptor activation in adult rats

Environmental stimuli during neonatal periods play an important role in the development of cognitive function. In this study, we examined the long-term effects of neonatal tactile stimulation (TS) on spatial working memory (SWM) and related mechanisms. We also investigated whether TS-induced effects could be counteracted by repeated short periods of maternal separation (MS). Wistar rat pups submitted to TS were handled and marked transiently per day during postnatal days 2–9 or 10–17. TS/MS pups were stimulated in the same way as TS pups and then individually separated from their mother for 1 h/day. Their nontactile stimulated (NTS) siblings served as controls. In adulthood, TS and TS/MS rats showed better performance in two versions of the delayed alternation task and superior in vivo long-term potentiation of the hippocampo–prefrontal cortical pathway when compared with controls. Furthermore, there were more doses of A77636 (a selective dopamine D1 agonist) to significantly improve SWM performance in TS and TS/MS rats than in NTS rats, suggesting that activation of prefrontal D1 receptors in TS and TS/MS rats is more optimal for SWM function than in NTS rats. MS did not counteract TS-induced effects because no significant difference was found between TS/MS and TS animals. These data indicate that in early life, external tactile stimulation leads to long-term facilitative effects in SWM-related neural function.     

Mediation analyses of Internet-facilitated cognitive behavioral intervention for maternal depression

This study evaluated the putative mediating mechanisms of an Internet-facilitated cognitive-behavioral therapy (CBT) intervention for depression tailored to economically disadvantaged mothers of preschool-age children. The CBT mediators were tested across two previously published randomized controlled trials which included the same measures of behavioral activation, negative thinking, and savoring of positive events. Trial 1 included 70 mothers with elevated depressive symptoms who were randomized to either the eight-session, Internet-facilitated intervention (Mom-Net) or to treatment as usual. Trial 2 included 266 mothers with elevated depressive symptoms who were randomized to either Mom-Net or to a motivational interviewing and referral to services condition. Simple mediation models tested each putative mediator independently followed by tests of multiple mediation that simultaneously included all three mediators in the model to assess the salient contributions of each mediator. The pattern of results for the mediating effects were systematically replicated across the two trials and suggest that behavioral activation and negative thinking are salient mediators of the Mom-Net intervention; significant mediating effects for savoring were obtained only in the simple mediation models and were not obtained in the multiple mediation models.     

Latina/o Children Living With an Immigrant Mother With Depression: Developmental and Cultural Nuances in Recognition and Coping

The psychological experience of maternal depression and its impact on immigrant Latina/o families often goes unrecognized and unaddressed. Children may feel especially helpless and confused about the changes they observe in their mothers’ mood and behavior, and about the deterioration of family relationships. Given the interdependence of family structures of immigrant Latina/o households, maternal depression can be detrimental to Latina/o youth attributions and coping strategies, and to their relationship with their mothers. The quantitative focus of most research on maternal depression in Latina/o samples limits our understanding of family processes in maternal depression. The current qualitative study explores the perceived impact of maternal depression on Latina/o youths’ attributions and coping strategies. This inquiry involved focus groups with 12 participants aged 9–16 years to explore their perspectives on maternal depression. All youth had participated in a 12‐week multifamily group intervention focused on building family and cultural strengths to address maternal depression on immigrant Latina/o families. Findings of the focus groups illuminated the essential experience of youth living with maternal depression, and indicated that there are developmental considerations for how youth recognize and make meaning of maternal depression, and cope with disrupted family life. Additionally, youth reported engaging in these culture‐specific ways of coping: using close sibling relationships and family structure as support, having fathers and extended family members engage in additional and restorative parenting practices, and participating in religious practices to seek refuge from family stress. We propose considerations for intervention and further areas of research.     

Current and Past Maternal Depression, Maternal Interaction Behaviors, and Children’s Externalizing and Internalizing Symptoms

Relations among past maternal depressive disorder, current depressive symptoms, current maternal interaction behaviors, and children's adjustment were examined in a sample of 204 women and their young adolescent offspring (mean age = 11.86, SD = 0.55). Mothers either had (n = 157) or had not (n = 57) experienced at least one depressive disorder during the child's life. Mothers and children participated in a problem-solving task, video-taped for later coding. Mothers with current depressive symptoms and those with histories of chronic/severe depressive disorders displayed fewer positive behaviors toward their children; mothers with current depressive symptoms also showed more negative behaviors with their children. The relation between mothers' depression history and their behavior during the interaction with their child was partially mediated by mothers' current mood state. Moreover, high levels of maternal negativity and low levels of positivity during the problem-solving task were related to children's externalizing problems. Maternal positivity partially mediated the relation between maternal depression and children's externalizing symptoms. These findings highlight the importance of providing parenting interventions for depressed mothers.     

Consistency in maternal affect and positive vocalization over the first year of life

Consistency in parenting infants has positive developmental outcomes. Yet, the role of socioeconomic status (SES) in consistency of maternal behaviors is not well understood. We investigated individual-order continuity of maternal smile and laughter and positive vocalization from 6 to 12 months of age in 82 mother-infant dyads. Overall, individual differences in maternal smile and laughter, and positive vocalization were consistent across time. A multidimensional measure of SES moderated the association of maternal smile and laughter from 6 to 12 months, such that infants from lower SES families were vulnerable to unpredictable parenting - experiencing a lack of consistency in maternal smiles and laughter.