Distorted Maternal Representations (DMRs) -mother's ideas, understanding, and feelings about the infant -shape early interaction and the emerging relationship. Distorted interactions reportedly affect infant attachment and socioemotional development and may be associated with maternal early adversity and trauma. Limited measures are available that could be used as screening tools of DMRs. The aims of this study were to (1) describe the development of the Mother-Infant Relationship Scale (MIRS) and (2) to evaluate its psychometric properties. The development and validation of the MIRS closely followed standard guidelines for the development of psychometric tests. Psychometric properties were examined across 2 samples: 78 adult psychiatric patients with features of borderline personality, and 86 individuals from a non-clinical sample (N=164). The scale demonstrated excellent internal consistency (Cronbach's alpha .91) for clinical and adequate (.78) for non-clinical sample, excellent test-retest reliability (ICC .81), and good concurrent validity with an observational (Pearson's correlation coefficients ranging from -.35 to -.54) and a representational measure (.53). Factor analysis revealed 3 components: DMRs specific to (1) maternal hostility/rejection of the infant, (2) issues about parenting/attachment (3) anxiety/helplessness about infant care. Findings suggest the MIRS is a reliable and valid screening tool of DMRs. Potential uses in clinical and research settings are discussed.

Despite the longstanding theoretical association in the attachment literature between maternal trauma history and disturbances in the mother-infant interaction, few studies have investigated mechanisms of transmission of traumatogenic relational patterns in high-risk mother-infant dyads. This study investigated interrelationships among maternal trauma history, distorted maternal representations (DMRs, i.e. disturbed thoughts and feelings about the infant and selfas-parent), maternal mentalisation (i.e. capacity to conceive of self and other's intentions in terms of mental states including thoughts, feelings, and desires), and quality of interaction in a clinical sample of mothers with Borderline Personality Disorder (BPD) features and their infants (N = 61). Measures used included the Childhood Trauma Questionnaire, Parent Development Interview, Mother-Infant Relationship Scale, Borderline Symptom Checklist-23, and the Emotional Availability Scales. The results indicated BPD features mediated the relationship between maternal trauma history and DMRs predicting disturbance in interaction. In addition, analyses showed that maternal mentalisation had a buffering effect between DMRs and maternal non-hostility and yet the severity of BPD features moderated the relationship between mentalisation and DMRs. The findings suggest postpartum borderline pathology may adversely impact the experience of being a parent for women with a relational trauma history including deficits in mentalisation (i.e. hypermentalising) and disturbances in the mother-infant interaction. Implications for research and clinical practice are discussed.

Background: The COVID 19 pandemic has created unprecedented acute global health challenges. However, it also presents a set of unquantified and poorly understood risks in the medium to long term, specifically, risks to children whose mothers were infected with the SARS-CoV-2 virus during pregnancy. Methods: We have designed a prospective, case-controlled study to investigate the long-term impacts of SARS-CoV2 exposure on children exposed in utero. Women infected with SARS-CoV-2 during pregnancy will be recruited from Monash Health, the Royal Women’s Hospital and Western Health (Melbourne, Australia) and Londrina Municipal Maternity Hospital Lucilla Ballalai and PUCPR Medical Clinical (Londrina, Brazil). A control group in a 2:1 ratio (2 non-exposed: 1 exposed mother infant dyad) comprising women who gave birth in the same month of delivery, are of similar age but did not contract SARS-CoV-2 during their pregnancy will also be recruited. We aim to recruit 150 exposed and 300 non-exposed mother-infant dyads. Clinical and socio-demographic data will be collected directly from the mother and medical records. Biospecimens and clinical and epidemiological data will be collected from the mothers and offspring at multiple time points from birth through to 15 years of age using standardised sample collection, and neurological and behavioural measures. Discussion: The mapped neurodevelopmental trajectories and comparisons between SARS-CoV2 exposed and control children will indicate the potential for an increase in atypical neurodevelopment. This has significant implications for strategic planning in the mental health and paediatrics sectors and long-term monitoring of children globally.

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