Mind-mindedness (MM) refers to the parent's ability to treat the child as an individual with a mind of his or her own. Studies have found representational and interactional MM to predict child development, but more research is needed on the validity of representational MM in parents of infants. Therefore, we examine the reliability and validity of…

We conducted a close replication of the seminal work by Marcus and colleagues from 1999, which showed that after a brief auditory exposure phase, 7-month-old infants were able to learn and generalize a rule to novel syllables not previously present in the exposure phase. This work became the foundation for the theoretical framework by which we…

How do infants learn about the formal properties of language using only cues they can access in speech? And what intuitions do they bring to the learning problem? Chapter 2: To explore whether current notions of statistically-based language learning could successfully scale to infants' linguistic experiences "in the wild", we implemented…

This study examines the infant-father attachment in infants born preterm (<?1500?g at birth and/or?<?37 weeks gestation) in comparison to full-term infants. The infant-father attachment was assessed using the Strange Situation Procedure at a (corrected) age of 15 months. We found at least half of preterm and full-term infants (50.0% and…

Background: The current literature suggests a link between dummy (or pacifier) use and a number of both positive and detrimental consequences. Positive consequences include soothing effect and protection from sudden infant death syndrome (SIDS), while negative ones include increased risk of otitis media and dental malformation. However, there is…

Successful language learning in bilinguals requires the differentiation of two language systems. The capacity to discriminate rhythmically close languages has been reported in 4-month-olds using auditory-only stimuli. This research offers a novel perspective on early language discrimination using audiovisual material. Monolingual and bilingual…

Previous studies found an impact of language familiarity on face recognition in 9- and 12-month-olds. Own race faces are better recognized when associated with native language, whereas for other race faces, it is with non-native language. The aim of this study is to investigate if language familiarity can also influence abstract pattern…

This study assessed a preventive intervention home visiting programme (Fussy Baby Network (FBN)) designed to support mothers struggling with infant crying, sleeping, or feeding concerns. Mothers were referred to the programme through local health- and social service providers and were eligible to participate in the study if they were age 18 or…

Two experiments examined 12- to 13-month-old infants' reactions to noncontingent responding by the parent (Experiment 1, 40 infants) or by an unfamiliar adult (Experiment 2, 40 infants). During the initial play phase, the adult was either reading a book or using his or her mobile phone, resulting in a response delay when the infant would seek the…

Behavioural, cognitive and emotional dysregulation related to parent borderline personality disorder (BPD) may have a major impact on parent-infant interactions. We investigated the ways in which infant social withdrawal and mother sensitivity may be associated to a BPD diagnosis in mothers. Two groups of clinic-referred mother-infant dyads were…

Research has shown that infants are curious and actively seek situations from which they can learn. For instance, a recent eye-tracking study demonstrates that babies tend to allocate their attention to stimuli that offer opportunities for learning new information. Interestingly, however, the degree to which attention is guided by information gain…

Young children engage with digital technologies from a very young age. Often this is considered detrimental to their social development as it is seen as a socially isolating experience. This paper presents the findings of an Australian Research Council funded research project that focused on what characterises infants and toddlers peer-to-peer…

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)…

This longitudinal study investigated parents' different pretend play behaviors (substitution, animation, and role enactment) to their infants during free play and the bidirectional links with infants' vocabulary development at 14 months (Time-1: N = 34, M[subscript age] = 14.23 months) and 20 months (Time-2: N = 34, M[subscript age] = 20.33…

Speech development occurs in highly variable environments; however, little is known about the effect of situational context on emerging infant vocalizations. At 4 time points (4, 6, 9, and 12 months), we longitudinally measured vocalizations of 104 White infant-caregiver dyads (41 girls) during three play contexts: book-sharing, toy play, and…