Unweighting infants reveals hidden motor skills

We investigated the role of rate limiting factors in development using walking as a model system. The achievement of bipedal posture and locomotion are among the most significant achievements in an infant's first year, with poor balance and weak muscles long proposed as the rate limiting factors. Compensating for either may reveal upright motor skill that has not yet emerged in the infant's natural repertoire. To probe this question, we unweighted prewalking infants and measured their performance in various standing and walking behaviors while unweighted compared to baseline. Our secondary objective was to determine if the influence of unweighting was related to infants’ locomotor experience. Infants stood unsupported for longer durations with 20% or 40% unweighting. Infants took more independent steps and more steps with one hand held with 40% unweighting. No differences in transition to/from standing were observed. Locomotor experience was related to the influence of unweighting during cruising and walking with a push toy. This is the first report of more advanced motor skills—longer periods of unsupported standing and the emergence of independent walking—revealed by unweighting infants. We interpret our observations to suggest that the refinement of motor control needed to support bipedal posture and locomotion precedes the functional emergence of these skills in infants. In other words, the musculoskeletal components required for walking are slower to develop than the neurological factors – and consequently may be the rate limiters. We further suggest that training regimens including unweighting should be explored in infants with motor delays.     

Infant placement and language exposure in daily life

Children's daily contexts shape their experiences. In this study, we assessed whether variations in infant placement (e.g., held, bouncy seat) are associated with infants' exposure to adult speech. Using repeated survey sampling of mothers and continuous audio recordings, we tested whether the use of independence-supporting placements was associated with adult speech exposure in a Southeastern U.S. sample of 60 4- to 6-month-old infants (38% male, predominately White, not Hispanic/Latinx, from higher socioeconomic status households). Within-subject analyses indicated that independence-supporting placements were associated with exposure to fewer adult words in the moment. Between-subjects analyses indicated that infants more frequently reported to be in independence-supporting placements that also provided posture support (i.e., an exersaucer) were exposed to relatively fewer adult words and less consistent adult speech across the day. These findings indicate that infants' opportunities for exposure to adult speech ‘in the wild’ may vary based on immediate physical context.     

Infants’ understanding of auditory events

Infants’ reaching‐in‐the‐dark was studied in a sample of normal 7.5–11‐month‐olds to determine whether infants can use sound cues to localize and recognize the action and objects of complex events. Infants were shown an event in which a moving, sounding object rotated clockwise through the infant's reaching space in the light and dark. Infrared recorded videotapes were later coded for reaching behaviour. Results showed that infants were able to localize the object on most trials in the dark but were slower and less efficient than in the light. Infants grasped the object at first contact and contacted the object near its salient feature in the dark, suggesting recognition of the object. Further, contact time was 1.7 s less when infants grasped the object at first contact in the dark (recognition) than when they touched the object, suggesting that recognition of the object improves reaching efficiency. There were no age and gender differences. In sum, the results support the use of the reaching‐in‐the‐dark method to demonstrate auditory localization of moving sounds and to reveal infants capacity to use represented information to guide subsequent action. Copyright © 1999 John Wiley & Sons, Ltd.     

Increasing parenting self-efficacy: The Fussy Baby Network® intervention

High levels of infant crying place families at risk for disrupted relationships, parenting stress, and even for child maltreatment. We conducted an evaluation of the Fussy Baby Network^® (FBN), a program supporting families struggling with infant crying and related concerns. The study contrasted 29 families who sought help from FBN with 27 families with excessively crying infants who did not seek services. Researchers measured parenting self-efficacy, depression, and stress in each group before and after the intervention. Results from hierarchical multiple regression analysis indicated greater improvements over time in parenting self-efficacy for parents receiving FBN services. Furthermore, the greater improvements in parenting self-efficacy in the intervention group were not directly attributable to reductions in infant crying. These findings provide preliminary evidence that the FBN approach may be effective at boosting the confidence of parents struggling with caring for their infants. Future research with larger samples with baseline equivalence and stronger research designs should explore this intervention further. This study also suggests that interventions for families with excessively crying infants should move beyond the focus of reducing infant crying to a broader strategy of supporting parents and strengthening relationships between parents and their infants to build parenting capacity.     

The Michigan infant mental health home visiting model

Selma Fraiberg's pioneering work with infants, toddlers, and families over 40 years ago led to the development of a field in which professionals from multiple disciplines learned to work with or on behalf of infants, very young children, their parents, and the relationships that bind them together. The intent was to promote social and emotional health through enhancing the security of early developing parent–child relationships in the first years of life (Fraiberg, 2018). Called infant mental health (IMH), practitioners from fields of health, education, social work, psychology, human development, nursing, pediatrics, and psychiatry specialize in supporting the optimal development of infants and the developing relationship between infants and their caregivers. When a baby is born into optimal circumstances, to parents free of undue economic and psychological stressors and who are emotionally ready to provide care and nurturing for an infant's needs, an IMH approach may be offered as promotion or prevention, with the goal of supporting new parent(s) in developing confidence in their capacity to understand and meet the needs of the tiny human they are coming to know and care for. However, when parental history is fraught with abandonment, loss, abuse or neglect, or the current environment is replete with economic insecurity, threats to survival due to interpersonal or community violence, social isolation, mental illness, or substance abuse, the work of the IMH therapist may require intervention or intensive treatment and becomes more psychotherapeutic in nature. The underlying therapeutic goal is to create a context in which the baby develops within the environment of a parent's nurturing care without the psychological impingement that parental history of trauma or loss or current stressors such as isolation, poverty, or the birth of a child with special needs, can incur.     

The risk of low risk: First time motherhood,prematurity and dyadic well-being

Premature birth has a well-documented impact on infants, mothers and their dyadic interactions. First time motherhood in the context of low risk premature birth—relatively unexplored in the literature—is a specific experience that sits at the nexus of premature infancy, motherhood and the processes that underpin dyadic connection. This qualitative study analyzed semistructured interviews with first time mothers of low risk premature babies. Findings were generated in response to research questions concerning mothers’ meaning-making, bonding and identity. Findings demonstrated that maternal meaning-making emerged from a dyadic framework. When mothers or their infants were considered outside of a dyadic context, surplus suffering inadvertently occurred. Findings have important implications for infant mental health practice in medical settings, for postnatal support in the aftermath of premature birth, and for understanding the meaning of risk.     

Finding focus in a difficult landscape: Therapists’ experiences with challenging video guidance processes for parent–infant dyads

Marte Meo video guidance uses filmed interaction of the actual parent–infant dyad in the guidance of caregivers. Exploring the challenges that therapists meet in the guidance of parent–infant dyads may illuminate important aspects of the method itself as well as the therapists’ role and requirements. This could lead to method development and improved practice, but is hitherto little addressed. In this paper, we explore how skilled therapists experience and handle challenging or failing guidance processes with parent–infant dyads. We analyzed interviews with 13 Marte Meo therapists/supervisors using team-based reflexive thematic analysis. Four main themes were identified: promoting relational growth in a coercive context, building an alliance that feels safe for the parents, looking at positive moments in difficult lives, and handling intense feelings as a therapist. Our findings show that therapists experience specific therapeutic and ethical challenges with a vulnerable subgroup of parent–infant dyads where child protective issues arise, where caregivers’ insecurities impede the therapeutic relationship, and where caregivers have unsolved relational or mental health problems. The therapists’ role becomes pivotal and demanding with regard to the therapeutic alliance, the therapeutic interventions in the guidance process, and their own need for regulation, supervision, and structure. Identification of these vulnerable dyads early in the process could facilitate a better adaptation and practice of video guidance. Our findings suggest a need for supporting structures, clinical supervision, and training that address these challenges.     

Maternal postpartum depression is a risk factor for infant emotional variability at 4 months

Maternal postpartum depression (PPD) is a risk for disruption of mother–infant interaction. Infants of depressed mothers have been found to display less positive, more negative, and neutral affect. Other studies have found that infants of mothers with PPD inhibit both positive and negative affect. In a sample of 28 infants of mothers with PPD and 52 infants of nonclinical mothers, we examined the role of PPD diagnosis and symptoms for infants’ emotional variability, measured as facial expressions, vocal protest, and gaze using microanalysis, during a mother–infant face-to-face interaction. PPD symptoms and diagnosis were associated with (a) infants displaying fewer high negative, but more neutral/interest facial affect events, and (b) fewer gaze off events.  PPD diagnosis, but not symptoms, was associated with less infant vocal protest. Total duration of seconds of infant facial affective displays and gaze off was not related to PPD diagnosis or symptoms, suggesting that when infants of depressed mothers display high negative facial affect or gaze off, these expressions are more sustained, indicating lower infant ability to calm down and re-engage, interpreted as a disturbance in self-regulation. The findings highlight the importance of not only examining durations, but also frequencies, as the latter may inform infant emotional variability.     

Motion tracking of parents’ infant‐ versus adult‐directed actions reveals general and action‐specific modulations

Parents tend to modulate their movements when demonstrating actions to their infants. Thus far, these modulations have primarily been quantified by human raters and for entire interactions, thereby possibly overlooking the intricacy of such demonstrations. Using optical motion tracking, the precise modulations of parents’ infant‐directed actions were quantified and compared to adult‐directed actions and between action types. Parents demonstrated four novel objects to their 14‐month‐old infants and adult confederates. Each object required a specific action to produce a unique effect (e.g. rattling). Parents were asked to demonstrate an object at least once before passing it to their demonstration partner, and they were subsequently free to exchange the object as often as desired. Infants’ success at producing the objects’ action‐effects was coded during the demonstration session and their memory of the action‐effects was tested after a several‐minute delay. Indicating general modulations across actions, parents repeated demonstrations more often, performed the actions in closer proximity and demonstrated action‐effects for longer when interacting with their infant compared to the adults. Meanwhile, modulations of movement size and velocity were specific to certain action‐effect pairs. Furthermore, a ‘just right’ modulation of proximity was detected, since infants’ learning, memory, and parents’ prior evaluations of their infants’ motor abilities, were related to demonstrations that were performed neither too far from nor too close to the infants. Together, these findings indicate that infant‐directed action modulations are not solely overall exaggerations but are dependent upon the characteristics of the to‐be learned actions, their effects, and the infant learners.