Infant-caregiver Dyads Research Articles

Needing to shout to be heard? Caregiver under-responsivity and disconnection between vocal signaling and autonomic arousal in infants from chaotic households.

Children raised in chaotic households show affect dysregulation during later childhood. To understand why, we took day-long home recordings using microphones and autonomic monitors from 74 12-month-old infant-caregiver dyads (40% male, 60% white, data collected between 2018 and 2021). Caregivers in low-Confusion Hubbub And Order Scale (chaos) households responded to negative affect infant vocalizations by changing their own arousal and vocalizing in response; but high-chaos caregivers did not, whereas infants in low-chaos households consistently produced clusters of negative vocalizations around peaks in their own arousal, high-chaos infants did not. Their negative vocalizations were less tied to their own underlying arousal. Our data indicate that, in chaotic households, both communicating and responding are atypical: infants are not expressing their levels of arousal, and caregivers are under-responsive to their infants' behavioral signals.

Moment-to-moment cascades: Infants' real-time locomotor posture structures opportunities for joint object play with caregivers.

Developmental cascades-the view that development in one domain can induce change in another-provide unique flexibility for researchers to examine relations among multiple behaviors. Research using this theoretical framework has demonstrated that changes in infant locomotor development are met with concomitant changes in infants' interactions with objects and caregivers. However, little is known about how infants' real-time locomotor actions organize these larger associations across developmental time. This study mapped the progression of one potential moment-to-moment cascade pathway linking changes in infant locomotion, access to objects and caregivers, and joint object play. We observed 30 infant-caregiver dyads during three monthly sessions across the transition to walking (Minfant age = 11.98 months, range = 8.74-14.86) and examined whether and how infants' real-time locomotor actions shaped the unfolding of the cascade. Infants moved more frequently in supported upright postures (i.e., cruising, supported walking) compared to crawling at the prewalking session and compared to walking at walk onset. However, infants preferred to walk after spending 1 month as walkers. Regardless of how they moved, infants regularly encountered objects and caregivers during everyday exploration. But there was an effect of locomotor posture on joint object play. Specifically, dyads were most likely to engage in object play after supported upright bouts at the prewalking and walk onset sessions, but at the final walking session, they were most likely to do so after walking bouts. Taken together, this in-depth examination of moment-to-moment cascades highlights the contributions of the many timescales that drive developmental processes. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Caregiver greeting to infants under 6 months already reflects emerging differences in those later diagnosed with autism.

As infants develop, caregivers adjust their behaviour to scaffold their infant's emerging skills, such that changes in infants' social abilities are expected to elicit changes in caregiver behaviour. We examined whether changes in the probability of infant-directed caregiving behaviour-specifically, greeting, a ubiquitous signal used by caregivers to initiate reciprocal interactions-differ between infant-caregiver dyads with an infant later diagnosed with autism and dyads with a neurotypically developing infant during infants' first 6 months. Using longitudinal data from 163 dyads, we found that caregivers in autism dyads (n = 40) used greeting less and at later infant ages than caregivers with a neurotypically developing infant (neurotypical dyads, n = 83). Caregivers in dyads with infants at elevated familial genetic likelihood for autism who did not receive an autism diagnosis (EL-non-autism dyads, n = 40) showed no differences in greeting compared with neurotypical dyads. Socioeconomic status partially mediated the difference between autism and neurotypical dyads. These findings show that autism and socioeconomic status were associated with the mutually adapted dynamics of dyadic interaction beginning in the first postnatal weeks. Importantly, differences in caregiver greeting observed in autism dyads are not interpreted as suboptimal behaviour from caregivers but rather indicate how early emerging social differences related to autism, years before overt features are present, may alter social learning opportunities elicited by the infant.

Home-Based EEG Hyperscanning for Infant-Caregiver Social Interactions.

Prior hyperscanning studies that record the brain activities of caregivers and children concurrently have primarily been conducted within the confines of the laboratory, thus limiting the generalizability of results to real-life settings. Here, a comprehensive protocol for capturing synchronized electroencephalography (EEG), electrocardiography (ECG), and behavioral recordings from infant-caregiver dyads during various interactive tasks at home is proposed. This protocol demonstrates how to synchronize the different data streams and report EEG data retention rates and quality checks. Additionally, critical issues and possible solutions with respect to the experimental setup, tasks, and data collection in home settings are discussed. The protocol is not limited to infant-caregiver dyads but can be applied to various dyadic constellations. Overall, we demonstrate the flexibility of EEG hyperscanning setups, which allow experiments to be conducted outside of the laboratory to capture participants' brain activities in more ecologically valid environmental settings. Yet, movement and other types of artifacts still constrain the experimental tasks that can be performed in the home setting.

Measuring Early Relational Health Using PediaTrac TM in a Diverse Sample of Infant-Caregiver Dyads.

Early relational health (ERH) is a key developmental predictor and outcome in infancy and early childhood that reflects social-emotional well-being and promotes resilience throughout childhood. Currently, there is no gold-standard developmental screening tool for ERH in pediatric care settings. This study examined the psychometric properties of items assessing ERH that are part of a web-based, caregiver-report screening tool called PediaTrac TM . It was hypothesized that ERH could be reliably estimated and that second-order factors would be revealed within the latent construct ERH. Participants included 571 caregivers of term (n = 331; ≥37 weeks) and preterm (n = 240; <37 weeks) infants recruited shortly after birth from several academic medical centers and a community health clinic. Caregivers completed PediaTrac modules at birth and 2, 4, 6, 9, 12, 15, and 18 months; data for this study are from the newborn through 12-month periods. Results from Item Response Theory Graded Response Modeling revealed excellent reliability for the PediaTrac ERH domain at all time points, ranging from 0.96 to 0.98. Exploratory factor analyses revealed 4 to 5 second-order factors, representing Parent-Child Relationship, Parent Distress, Parenting Stress, Parenting Efficacy, Sensitivity, and Perceptions of Child, depending on period. The caregiver-report developmental screening tool, PediaTrac, reliably measures ERH during the first year of life. The measure has promising clinical utility in pediatric clinic settings for tracking ERH over time to ensure early social-emotional well-being and to identify concerns as early as possible.

Communicative signals during joint attention promote neural processes of infants and caregivers

Communicative signals such as eye contact increase infants’ brain activation to visual stimuli and promote joint attention. Our study assessed whether communicative signals during joint attention enhance infant-caregiver dyads’ neural responses to objects, and their neural synchrony. To track mutual attention processes, we applied rhythmic visual stimulation (RVS), presenting images of objects to 12-month-old infants and their mothers (n = 37 dyads), while we recorded dyads’ brain activity (i.e., steady-state visual evoked potentials, SSVEPs) with electroencephalography (EEG) hyperscanning. Within dyads, mothers either communicatively showed the images to their infant or watched the images without communicative engagement. Communicative cues increased infants’ and mothers’ SSVEPs at central-occipital-parietal, and central electrode sites, respectively. Infants showed significantly more gaze behaviour to images during communicative engagement. Dyadic neural synchrony (SSVEP amplitude envelope correlations, AECs) was not modulated by communicative cues. Taken together, maternal communicative cues in joint attention increase infants’ neural responses to objects, and shape mothers’ own attention processes. We show that communicative cues enhance cortical visual processing, thus play an essential role in social learning. Future studies need to elucidate the effect of communicative cues on neural synchrony during joint attention. Finally, our study introduces RVS to study infant-caregiver neural dynamics in social contexts.

Frequency &amp; Duration of Co-Occupation Among Infant–Caregiver Dyads Living in a Rural Area: A Retrospective Cohort Study

Abstract Date Presented 04/20/2023 The co-occupational constructs of shared emotionality, shared intentionality, and shared physicality provide an understanding of how co-occupation may be a valuable mechanism for evaluation and intervention. Primary Author and Speaker: Bryan M. Gee Additional Authors and Speakers: Nicki L. Aubuchon-Endsley Contributing Authors: Molly Kegley, Lauren Troy, Brittany Banh

An attachment-based framework for disordered personality development: Implications for intersubjective psychodynamic psychotherapy.

Infant-caregiver dyads show high heterogeneity in terms of compatibility. Several lines of evidence indicate that the modalities by which areas of good and poor fit were emotionally recognized and managed by caregivers influence the infant's personality development, the integration of their personality traits, the overall sense of authenticity, as well as the modalities of transference that typically manifest during psychodynamic psychotherapy. Within an intersubjective framework, the relationship between patient and psychotherapist will inevitably recreate compatibility issues, although the specific areas of incompatibility will likely differ from the scenarios present in the caregiver relationship. In other words, emotional friction may originate from personality traits that were not problematic in the first place. The author hypothesizes that disclosure of the challenges associated with the management of areas of incompatibility will not only promote emotional honesty within the dyad, but also offer an excellent opportunity for introjection. Such disclosures are not at risk of being interpreted as an attempt to build an intersubjective experience, but represent a window into authenticity, which in turn enables patients to develop awareness of their personality and relational traits, along with the challenges and vulnerabilities that occur when such traits interface with otherness.

Bidding on the go: Links between walking, social actions, and caregiver responses in infant siblings of children with autism spectrum disorder.

The development of walking is associated with a shift in how neurotypical infants initiate social interactions. Walking infants are more likely to locate objects in distant places, carry them, and then share those objects by approaching caregivers and using gestures to show or offer their discoveries (i.e., moving bids). The simultaneous organization of the behaviors necessary to generate moving bids requires the coordination of multiple skills-walking, fine motor skills, and gesturing. Infants with an elevated likelihood (EL) for autism spectrum disorder (ASD) exhibit differences and delays in each of these behaviors. This study investigated interconnections between infant walking, social actions, and caregiver responses in 18-month-old EL infants with diverse developmental outcomes (ASD, non-ASD language delay, no diagnosis). We observed 85 infant-caregiver dyads at home during everyday activities for 45 minutes and identified all times when infants walked, instances of walking paired with social action (i.e., approaching the caregiver, approaching while carrying an object, producing a moving bid), and whether caregivers responded to their infants' social actions. There were no group differences in infants' production of social actions. Caregiver responses, however, were more clearly modulated by outcome group. While all caregivers were similarly and highly likely to respond to moving bids, caregivers of EL-ASD infants were substantially more likely to respond when their infants simply approached them (with or without an object in hand). Taken together, this research underscores the complexity of EL infant-caregiver interactions and highlights the role that each partner plays in shaping how they unfold.

Syllable complexity in 24-month-old infants resulting from spontaneous mother–child vocal interactions

Infant Directed Speech (IDS) influences language development via caregiver–child interactions and can promote early speech and language outcomes in some cultures (Golinkoff et al., 2015). IDS is characterized by a higher, more dynamic fundamental frequency (f0) as well as shorter caregiver utterances and simplified phono-lexical structures (Ramirez-Esparza et al., 2014). In line with social feedback theories of early vocal development (Warlaumont et al. 2014), this study proposes that certain acoustic aspects of IDS, when produced contingently with infant speech, will promote infants’ early vocal maturity. N = 84 infant-caregiver dyads were recorded during semi-naturalistic play sessions at 7, 10, 18, and 24 months. Infant vocal maturity was quantified as syllable complexity at 24-months where syllables with consonant-vowel (CV or VC) transitions were more complex than syllables with only a nucleus (V). The complexity of children’s syllables produced within 5 sof contingent caregiver speech will be compared to those produced outside of 5-swindows of caregiver speech. Infants’ syllable production will also be related to acoustic characteristics of IDS including f0 height, modulation, and caregiver speaking rate. Positive correlations between IDS characteristics and infant syllable complexity will provide additional evidence that socially contingent IDS spurs early speech development.

Vocalization and physiological hyperarousal in infant-caregiver dyads where the caregiver has elevated anxiety.

Co-regulation of physiological arousal within the caregiver-child dyad precedes later self-regulation within the individual. Despite the importance of unimpaired self-regulatory development for later adjustment outcomes, little is understood about how early co-regulatory processes can become dysregulated during early life. Aspects of caregiver behavior, such as patterns of anxious speech, may be one factor influencing infant arousal dysregulation. To address this, we made day-long, naturalistic biobehavioral recordings in home settings in caregiver-infant dyads using wearable autonomic devices and miniature microphones. We examined the association between arousal, vocalization intensity, and caregiver anxiety. We found that moments of high physiological arousal in infants were more likely to be accompanied by high caregiver arousal when caregivers had high self-reported trait anxiety. Anxious caregivers were also more likely to vocalize intensely at states of high arousal and produce intense vocalizations that occurred in clusters. High-intensity vocalizations were associated with more sustained increases in autonomic arousal for both anxious caregivers and their infants. Findings indicate that caregiver vocal behavior differs in anxious parents, cooccurs with dyadic arousal dysregulation, and could contribute to physiological arousal transmission. Implications for caregiver vocalization as an intervention target are discussed.

Symbolic play provides a fertile context for language development.

In this study, we test the hypothesis that symbolic play represents a fertile context for language acquisition because its inherent ambiguity elicits communicative behaviors that positively influence development. Infant-caregiver dyads (N=54) participated in two 20-minute play sessions six months apart (Time 1 = 18months, Time 2 = 24months). During each session, the dyads played with two sets of toys that elicited either symbolic or functional play. The sessions were transcribed and coded for several features of dyadic interaction and language; infants' linguistic proficiency was measured via parental report. The two contexts elicited different communicative and linguistic behaviors. Notably, the symbolic play condition resulted in significantly greater conversational turn-taking than functional play, and also resulted in the greater use of questions and mimetics in infant-directed speech (IDS). In contrast, caregivers used more imperative clauses in functional play. Correlational and regression analyses showed that frequent properties of symbolic play (i.e., turn-taking, yes-no questions, mimetics) were positively related to infants' language proficiency, whereas frequent features of functional play (i.e., imperatives in IDS) were negatively related. The results provide evidence supporting the hypothesis that symbolic play is a fertile context for language development, driven by the need to negotiate meaning.

A Health-Literacy Intervention for Early Childhood Obesity Prevention: A Cluster-Randomized Controlled Trial.

Children who become overweight by age 2 have greater risk of long-term obesity and health problems. The study aim was to assess the effectiveness of a primary care-based intervention on the prevalence of overweight at age 24 months. In a cluster-randomized trial, sites were randomly assigned to the Greenlight intervention or an attention-control arm. Across 4 pediatric residency clinics, we enrolled infant-caregiver dyads at the 2-month well-child visit. Inclusion criteria included parent English- or Spanish-speaking and birth weight ≥1500 g. Designed with health-literacy principles, the intervention included a parent toolkit at each well-child visit, augmented by provider training in clear-health communication. The primary outcome was proportion of children overweight (BMI ≥85th percentile) at age 24 months. Secondary outcomes included weight status (BMI z score). A total of 459 intervention and 406 control dyads were enrolled. In total, 49% of all children were overweight at 24 months. Adjusted odds for overweight at 24 months (treatment versus control) was 1.02 (95% confidence interval [CI]: 0.63 to 1.64). Adjusted mean BMI z score differences (treatment minus control) were -0.04 (95% CI: -0.07 to -0.01), -0.09 (95% CI: -0.14 to -0.03), -0.19 (-0.33 to -0.05), -0.20 (-0.36 to -0.03), -0.16 (95% CI: -0.34 to 0.01), and 0.00 (95% CI -0.21 to 0.21) at 4, 6, 12, 15, 18, and 24 months, respectively. The intervention resulted in less weight gain through age 18 months, which was not sustained through 24 months. Clinic-based interventions may be beneficial for early weight gain, but greater intervention intensity may be needed to maintain positive effects.

Marte Meo Counselling given to African caregivers of institutionalised infants a three-case study

ABSTRACT Background: Studies from Western countries state that video interaction guidance programmes can support caregiver sensitivity in infant-caregiver dyads. Objectives: The aim of this study was to investigate if Marte Meo, which is such a programme, could contribute to increasing emotional and social support towards motherless infants at an institution for motherless infants in rural Africa. Method: Three caregivers participated in five Marte Meo Counselling sessions. The first guidance naïve film and the last film were analysed qualitatively and quantitatively and organised according to two supportive categories: 1) caregiver responds to infants’ initiative, 2) caregiver takes initiative to supportive interaction, and two non-supportive: 3) caregiver behaves in an intrusive manner and 4) caregiver does not respond to the infants’ initiative. Results: After receiving Marte Meo Counselling, all three caregivers showed impressive augmentation of awareness and sensitivity in their care towards the infants’ emotional and social needs. Conclusion: We found indications that professional caregivers of institutionalised infants in an African country can profit on Marte Meo Counselling, showing positive effects on augmenting caregivers’ sensitivity towards the infants, and thereby meet the infants’ need of emotional and social support.

Determinants of infant carrying behavior in rural Papua New Guinea

The determinants of variability in infant carrying within and across societies is an understudied area within parental investment research. Carrying has positive and negative consequences as it may protect the infant from predators and pathogens but is energetically costly for caregivers. Moreover, carrying may delay independent locomotor development and exposure to antigens necessary for immunological competence. The purpose of this study is to compare infants' ages and developmental milestone attainment as predictors of carrying behavior and to identify other determinants of carrying behavior among traditional forager-horticulturalists in Papua New Guinea. We analyze quantitative data collected among 107 infant-caregiver dyads during 354 hours of focal follows on infant carrying. Random effects logistic regression was used to model carrying behavior in these dyads. Infants' chronological age and milestone achievement are equally reliable predictors of abatement of carrying and increased time on the ground. Further, the presence or absence of the mother and the location of the infant-caregiver pair are significantly associated with carrying behavior. Indices of mother's and infants' condition such as anthropometric measures were not predictive of carrying behaviors. Mothers vary the amount of carrying based on assessment of infant and local environmental conditions. Age and milestone attainment are equally predictive of time on the ground and therefore increased exposure to antigens, pathogens and other dangers. High levels of infant carrying function as offspring protection by increasing exposure to ground level pathogens gradually, thus allowing for the naïve immune system to develop immunocompetence incrementally.

Singing in Tune – Being in Tune: Relationship Between Maternal Playful Singing and Interpersonal Synchrony

While interpersonal synchrony is regarded as a defining characteristic of early social exchanges between infants and their caregivers, the mechanisms facilitating synchronous interactions are poorly understood. The goal of the present study was to examine the relationship between maternal playful singing and interpersonal synchrony of the mother-infant dyad. Overall, 56 mothers and their 4-month-old infants were observed during natural interactions that were then micro-coded for maternal and infant social behaviours as well as maternal singing and rhyming in the context of social game routines. Results showed that 38 dyads spontaneously engaged in social game routines. In these dyads, both playful singing and rhyming were positively associated with dyadic gaze synchrony, while only playful singing was also positively correlated with affect synchrony of the dyad. These findings suggest that rhythms, in general, may have important implications for the establishment of interpersonal synchrony in infant-caregiver dyads. However, musical rhythms seem to be particularly emotionally-salient and thus attune both interactional partners to the affective content of their social exchanges.

Synchronization of mother-infant feeding behavior

In the weaning period, infants are introduced to solid food after being fed solely on milk, which involves a deliberate reorganization of the infant-caregiver feeding interaction. This multiple case study, involving 5 dyads with 10 repeated observations, analyzed its dynamical structure using Cross-Recurrence Quantification Analysis. The results showed that an optimal interaction occurs when the caregiver is leading by roughly 1–2 seconds. During the weaning period, all dyads showed signs of increased synchronization, although there are interesting differences between dyads. These findings indicate that infant-caregiver dyads co-regulate their behavior within a relatively short period.

Symbolic play promotes non‐verbal communicative exchange in infant–caregiver dyads

Symbolic play has long been considered a fertile context for communicative development (Bruner, 1983, Child's talk: Learning to use language, Oxford University Press, Oxford; Vygotsky, 1962, Thought and language, MIT Press, Cambridge, MA; Vygotsky, 1978, Mind in society: The development of higher psychological processes. Harvard University Press, Cambridge, MA). In the current study, we examined caregiver-infant interaction during symbolic play and compared it to interaction in a comparable but non-symbolic context (i.e., 'functional' play). Fifty-four (N=54) caregivers and their 18-month-old infants were observed engaging in 20min of play (symbolic, functional). Play interactions were coded and compared across play conditions for joint attention (JA) and gesture use. Compared with functional play, symbolic play was characterized by greater frequency and duration of JA and greater gesture use, particularly the use of iconic gestures with an object in hand. The results suggest that symbolic play provides a rich context for the exchange and negotiation of meaning, and thus may contribute to the development of important skills underlying communicative development. Statement of contribution Current knowledge Symbolic play has long been linked to communicative development. We do not know the extent to which the social context of symbolic play fosters communicative skills. Present study We test whether key communicative acts (joint attention, gesture) are more common in infant-caregiver dyads during symbolic versus functional play. Joint attention was established more often and sustained for longer periods in symbolic play than in functional play. Infants and caregivers produced more in-hand representational gestures in symbolic compared to functional play.

Developing a measure of distress-promoting parent behaviors during infant vaccination: Assessing reliability and validity

ABSTRACT Background Infants rely on their parents’ sensitive and contingent soothing to support their regulation from pain-related distress. However, despite being of potentially equal or greater import, there has been little focus on how to measure distress-promoting parent behaviors. Aims The goal of this article was to develop and validate a measure of distress-promoting parent behaviors for acute painful procedures (e.g., vaccinations) that could be used by researchers and clinicians. Methods Following initial generation of measure items, focused group discussions were held with vaccinating clinicians to understand the measure’s face, content, and ecological validity. Archival video footage (n = 537 videos of infant-caregiver dyads during vaccination) was then coded using the measure of distress-promoting behaviors for 3 minutes post vaccine injection. Validity and reliability were examined using correlational analyses. Construct validity was assessed by convergent relationships with infant pain-related distress and divergent relationships were assessed with parent sensitivity and soothing-promoting behaviors. Results The measure demonstrated both moderate to excellent interrater and test-retest reliability and convergent and divergent validity (absolute magnitude of r’s = 0.30 to 0.46). Conclusions By demonstrating strong reliability and validity, this measure represents a promising new way to understand how caregivers interact with infants during painful procedures. Through focusing on distress promotion and using a format that may be coded both from video or in vivo, it is a feasible way to operationalize the impact of the caregiver on the infant’s pain experience in both research and clinical settings.

Infant-Mother and Infant-Caregiver Emotional Relationships: Process Analyses of Interactions in Three Contemporary Childcare Arrangements.

Emotional relationships in infant-mother dyads in families where mothers provided full-time (MC) childcare were compared with those of families where mothers used in-home childcare (IHC) providers and family childcare (FCC) providers (N = 245). Infant relationships with childcare providers were also studied. Emotional relationships were adequate in all 3 childcare arrangements, but infant-mother dyads in IHC arrangements displayed healthier emotional relationships than infant-mother dyads in MC arrangements; no differences in the health of emotional relationships with infants emerged among the three types of childcare providers (MC, IHC, FCC). Infant-mother dyads in IHC arrangements also displayed healthier emotional relationships than infant-IHC caregiver dyads, but infant-mother and infant-caregiver dyads were comparable in FCC families. Emotional relationships in infant-mother and infant-caregiver dyads were not correlated, regardless of the type of childcare.