Towards Preventative Psychiatry: Concurrent and Longitudinal Predictors of Postnatal Maternal-Infant Bonding

Identifying distinct subtypes of mother-to-infant bonding using latent profile analysis in a nationwide Japanese study

BACKGROUND

Mother-to-infant bonding (MIB) is foundational for nurturing behaviors and an infant's development. Identifying risk factors for difficulties or problems in MIB is vital. However, traditional research often dichotomizes MIB using cutoff thresholds, overlooking its underlying complexities. This research utilizes latent profile analysis (LPA) to discern MIB subtypes in a nationwide Japanese dataset.

METHODS

We conducted LPA on data from the Mother-to-Infant Bonding Scale (MIBS), collected from 3,877 postpartum women within one year of childbirth. To empirically validate the derived profiles, we examined their associated risk factors, focusing on sociodemographic, health, and perinatal variables.

RESULTS

Four distinct MIB profiles emerged. Profile 1 indicated minimal difficulties, while Profile 4 exhibited severe multifaceted difficulties. Profiles 2 and 3 showed moderate difficulties distinguished by lack of positive affection and presence of negative affection (especially indifference), respectively. Compared to Profile 1, women in Profiles 2-4 had a higher likelihood of postpartum depression and low family support. Each profile also presented unique risk factors: medium family support in Profile 2, maternal working status in Profile 3, and pre-pregnancy underweight status in Profile 4. Notably, both Profiles 3 and 4 were also linked to increased feelings of loneliness since the onset of the COVID-19 pandemic.

CONCLUSION

This study represents the first application of LPA to MIB, revealing distinct subtypes and their respective risk profiles. These insights promise to enhance and personalize early interventions for difficulties in MIB, affirming the necessity of acknowledging MIB's heterogeneity.

Maternal postpartum bonding impairment and increased substance use to cope with pandemic-related stress

Substance use rates, particularly among women, increased substantially during the COVID-19 pandemic. Psychological and economic risks disproportionately experienced by women were associated with increase in substance use patterns during the pandemic. Using substances (i.e., tobacco, alcohol, cannabis) to cope with stress is well-documented; what is less known are protective factors that were associated with less substance use during the pandemic. We examined whether mothers of young children (N = 96) who reported postpartum bonding impairment before the start of the pandemic reported greater substance use during the pandemic as a means to cope. Results from linear regression analyses found that mothers who reported higher levels of pre-pandemic mother-infant bonding impairments reported greater use of alcohol and other substances as a means to cope with pandemic stressors. These findings suggest that social connections might be a strategy to reduce substance use as a maladaptive coping behavior, especially during widespread crises such as the recent pandemic or for mothers of young children. In particular, promoting postpartum bonding through interventions might help to reduce substance use among new mothers.

The concept analysis of parent-infant bonding during pregnancy and infancy: a systematic review and meta-synthesis

INTRODUCTION

Despite the emerging body of literature on mother-to-infant bonding and the associated variables, there are various definitions of bonding construct. Also, there is a lack of a comprehensive conceptual framework of antecedents and consequences of bonding that would guide empirical work.

OBJECTIVE

Aim of the study was to provide a systematic review and synthesis of concept analysis studies on maternal-foetal, mother-infant, or father-infant bonding.

METHOD

A systematic search was performed in PubMed, EBSCOHost (including PsycINFO), ProQuest, and CINAHL. In addition, a hand search was conducted. Papers were eligible for inclusion if they conducted concept analyses on mother or father to foetus/infant bonding. A qualitative meta-synthesis was applied to synthesise the findings.

RESULTS

Eight papers on concept analyses were eligible for inclusion. In meta-synthesis, six aspects of parent-to-(unborn) child bonding emerged, including direction, domain, process, timing, endurance, and parental gender. Defining attributes are (i) a close relationship, (ii) filled with positive parental affection, (iii) manifested during pregnancy as monitoring foetal development and behaviour and after childbirth in proximity and interaction. Antecedents, affecting factors, and consequences of the parent-child bonding have been summarised.

CONCLUSION

Parent-infant bonding refers to an emotional, behavioural, cognitive, and neurobiological tie of the parent to the (unborn) child, as a process from intention to have a child throughout infancy. This is a parental-driven process which can continue to evolve throughout child's and parent's life, characterised as enduring, committed, and engaged. Based on meta-synthesis, a conceptual structure of parent-infant bonding has been provided, which needs further empirical testing.