Infant Behavior & Development最新文献

{"title":"Maternal and foetal exposure to potentially toxic metals of modern weaponry and infant cognitive, sensorimotor, and socioemotional development: The role of breastfeeding","authors":"Raija-Leena Punamäki ,&nbsp;Safwat Y. Diab ,&nbsp;Mervi Vänskä ,&nbsp;Nabil AlBarqouni ,&nbsp;Samir R. Quota","doi":"10.1016/j.infbeh.2025.102040","DOIUrl":"10.1016/j.infbeh.2025.102040","url":null,"abstract":"<div><div>Toxic metals in new-generation weapons pose health risks to civilians, and pregnant women are especially vulnerable in wars. Studies have focused on single toxins, such as white phosphorus and depleted uranium, although civilians are exposed to multiple toxic metals. Research has mainly concentrated on toxic metals impacting new-born health but has neglected older infants’ development and salient dyadic factors. This study examines how maternal and new-born prenatal exposure to multiple carcinogen, neurotoxic, and teratogen metals during a war impacts infants’ sensorimotor, cognitive, and socioemotional development, and the role of breastfeeding in that association. The participants were 502 Palestinian mothers, pregnant during the 2014 War on Gaza, and their new-borns, recruited at childbirth (T1) and followed up at 6 months (T2; <em>N</em> = 392) and 18 months (T3; <em>N</em> = 358). At T1, maternal and new-born hair samples were tested for 18 toxic metals. At T2, mothers reported infants’ fine-gross-motor, language, and socioemotional skills, and at T3, psychologists tested their motor, cognitive-language, and socioemotional skills. Mothers reported breastfeeding practices at T2 and T3. Results showed that the timing of direct developmental impact of maternal and new-born loads of toxic metals differed, as mothers’ high loads of carcinogen metals was associated with infant developmental problems at 6 months, and new-borns’ high loads of carcinogen and teratogen metals predicted developmental problems at 18 months. Both maternal and new-born high toxic metal loads were associated with decreased breastfeeding intensity and duration. The impact of maternal, but not newborn’s, exposure to toxic metals was mediated into infant development through decreased breastfeeding.</div></div>","PeriodicalId":48222,"journal":{"name":"Infant Behavior & Development","volume":"79 ","pages":"Article 102040"},"PeriodicalIF":1.9,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Predicting language outcomes at 3 years using individual differences in morphological segmentation in infancy” [Infant Behavior and Development 77 (2024) 102001]","authors":"Jinyoung Jo ,&nbsp;Megha Sundara ,&nbsp;Canaan Breiss","doi":"10.1016/j.infbeh.2025.102028","DOIUrl":"10.1016/j.infbeh.2025.102028","url":null,"abstract":"","PeriodicalId":48222,"journal":{"name":"Infant Behavior & Development","volume":"78 ","pages":"Article 102028"},"PeriodicalIF":1.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143018678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parent-infant interaction in the context of emerging neurodiversities: Neurofibromatosis 1 and elevated likelihood of ADHD","authors":"Gamze Kaplan ,&nbsp;Shruti Garg ,&nbsp;Debbie M. Smith ,&nbsp;Jannath Begum-Ali ,&nbsp;Emily J.H. Jones ,&nbsp;Jonathan Green ,&nbsp;Tony Charman ,&nbsp;Mark H. Johnson ,&nbsp;Ming Wai Wan ,&nbsp;EDEN-STAARS team","doi":"10.1016/j.infbeh.2025.102036","DOIUrl":"10.1016/j.infbeh.2025.102036","url":null,"abstract":"<div><div>Neurofibromatosis 1 (NF1) and attention-deficit hyperactivity disorder (ADHD) are distinct conditions with similarities in developmental course. Research suggests that neurodivergent processes in both conditions begin in the first year, altering infant behaviour and how parents respond, over time reducing social-communicative opportunities for social brain development. This study aimed to investigate parent-infant interactions in both groups relative to typically developing infants (TD) at 10 and 14 months. We hypothesised that the infants with NF1 and infants at elevated likelihood of ADHD (EL-ADHD) would show less attentiveness to their parent and less mutual parent-infant interaction relative to TD controls, that attentiveness-to-parent would be particularly low in infants with NF1, and that liveliness and negative affect would be higher in infants with EL-ADHD. Parents and their infants with NF1, EL-ADHD and TD were videotaped during free play interactions and coded using validated rating scales. The two non-TD groups differed in their interactive patterns from the TD group and each other in ways somewhat consistent with the early behaviours that characterise each group. The NF1 group showed relatively less mutual interactions than the EL-ADHD group, and less parental sensitive responsiveness and parental directiveness than the TD group, while EL-ADHD infants were livelier and showed less negative affect relative to the other groups. Most main effects persisted over time. While longer-term follow-up in larger samples is needed, our findings highlight how children with neurodevelopmental conditions that are not primarily characterised by social communication difficulties may nonetheless come to have distinct social experiences in the first year of life.</div></div>","PeriodicalId":48222,"journal":{"name":"Infant Behavior & Development","volume":"79 ","pages":"Article 102036"},"PeriodicalIF":1.9,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mothers’ and fathers’ emotion socialization: Longitudinal relations with toddlers’ social competence","authors":"Angelica Alonso ,&nbsp;Natasha J. Cabrera ,&nbsp;Marina A. Kerlow ,&nbsp;Stephanie M. Reich","doi":"10.1016/j.infbeh.2025.102034","DOIUrl":"10.1016/j.infbeh.2025.102034","url":null,"abstract":"<div><div>We examined longitudinal direct associations between mothers’ and fathers’ emotion socialization behaviors (ESB) at 18 and 24 months and toddlers’ social competence (SC) at 24 and 30 months in a sample of ethnically diverse families (n = 128) participating in a parenting intervention study. We also investigated interaction effects between mothers’ and fathers’ ESBs and between each parent’s ESBs and child emotionality. We coded parents’ ESBs to their toddlers’ positive and negative emotions during no-toy play and a clean-up task. Mothers reported on their toddlers’ social competence and emotionality. Using multiple linear regression modeling, we report three findings. First, mothers’ and fathers’ most frequent ESBs were emotion coaching and ignoring to positive and negative emotions, respectively, but emotion coaching of positive emotions by either parent was not associated with children’s SC. Second, mothers’ and fathers’ ESBs to negative emotions, however, were associated with children’s SC, but these associations varied by child emotionality and the other parent’s ESBs. Third, fathers’ non-supportive ESBs to negative emotions at 18 months were directly and positively associated with greater SC at 30 months, but their emotion coaching was significantly and positively related to children’s SC only when mothers did not provide any emotion coaching. The association between mothers’ non-supportive ESBs to negative emotions at 24 months and 30-month SC was negative only for children high in emotionality. These findings show that both mothers’ and fathers’ ESBs shape their children’s social competence in different ways, which needs to be considered when developing programs for children.</div></div>","PeriodicalId":48222,"journal":{"name":"Infant Behavior & Development","volume":"78 ","pages":"Article 102034"},"PeriodicalIF":1.9,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mother-infant physiological synchrony in the context of childbirth-related posttraumatic stress symptoms","authors":"Sella Devita ,&nbsp;Nadine Messerli-Bürgy ,&nbsp;Alain Lacroix ,&nbsp;Camille Deforges ,&nbsp;Laura Bozicevic ,&nbsp;Valentine Rattaz ,&nbsp;Jean-François Tolsa ,&nbsp;Vania Sandoz ,&nbsp;Antje Horsch","doi":"10.1016/j.infbeh.2025.102037","DOIUrl":"10.1016/j.infbeh.2025.102037","url":null,"abstract":"<div><div>Synchrony in mother-infant interactions is crucial for infant development. However, mother-infant physiological synchrony in the context of maternal childbirth-related posttraumatic stress symptoms (CB-PTSS) remains unknown. This pilot study aimed to investigate physiological synchrony within the context of CB-PTSS. Additionally, it investigated the association between mother-infant physiological synchrony and reciprocity. A total of 86 French or English-speaking mothers and their term infants participated in the study. Maternal CB-PTSS was assessed using the PTSD Checklist for DSM-5 (PCL-5), modified for childbirth. Mother-infant dyads were classified into three groups based on their responses to the PCL-5. During mother-infant interactions, physiological synchrony was measured using heart rate variability (HRV), while reciprocity was observed in video recordings. Cross-lagged analysis revealed distinct patterns of HRV fluctuations between mother-infant dyads: positive (mother and infant HRV fluctuated in the same direction) or negative (mother and infant HRV fluctuated in the opposite direction). To avoid canceling out potential effects by averaging the positive and negative correlation coefficients, we analyzed them separately. In positive dyads, maternal HRV led infant HRV by approximately two seconds. Conversely, in negative dyads, there was no significant lag or lead observed in either direction. Our analysis did not reveal a significant impact of CB-PTSS group classification on the physiological synchrony between mothers and their infants. Additionally, we found no significant relation between physiological synchrony and reciprocity within the dyads. We recommend that future studies with a similar focus should control for factors such as individual physiological regulation, maternal anxiety, and maternal depression to further explain these relationships.</div></div>","PeriodicalId":48222,"journal":{"name":"Infant Behavior & Development","volume":"78 ","pages":"Article 102037"},"PeriodicalIF":1.9,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Infants’ organization of pull-to-stand behaviors during play: A longitudinal investigation","authors":"Sabrina L. Thurman,&nbsp;Rebecca Rose","doi":"10.1016/j.infbeh.2025.102033","DOIUrl":"10.1016/j.infbeh.2025.102033","url":null,"abstract":"<div><div>Pulling-to-stand (PTS) is an important transitional posture which may facilitate the shift to walking, but infants still frequently PTS even after learning to walk. Using a group of 13 infants who had learned to PTS about three weeks prior, we aimed to track how gains in PTS, standing, and walking experience contributed to infants’ selection of more skilled PTS strategies and reorganized how infants used PTS to facilitate free play. We tracked spontaneous PTS over 10 biweekly laboratory sessions and video-coded functional measures of PTS skill, including hand-, knee-, and foot-use (e.g., lateral sides, hand- and foot-steps), and how infants used PTS during play, including behaviors immediately following PTS. Results showed infants frequently adopted skilled half-kneel strategies en route to PTS even though they were slower than symmetric PTS strategies. Most PTS involved asymmetrical and diagonal activation of the hands and legs, offering a stable center of gravity, and lateralized foot preferences were strong and stable. Other functional measures of PTS skill revealed increased efficiency over time, as infants PTS using fewer alternating hand-steps. Initially, infants PTS using stationary objects and then interacted with objects and mothers, but over time, infants increasingly PTS using the stairs and stair rails and engaged in more locomotor exploration following PTS. Even months after its initial onset, infants continued to refine PTS strategies and efficiency and used PTS differently for object interactions and locomotor exploration during play, which highlights the importance of tracking patterns of interlimb coordination during PTS and goal-directed behavior in context.</div></div>","PeriodicalId":48222,"journal":{"name":"Infant Behavior & Development","volume":"78 ","pages":"Article 102033"},"PeriodicalIF":1.9,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Young infants’ sensitivity to precursors of vowel harmony is independent of language experience","authors":"Elizabeth Solá-Llonch,&nbsp;Megha Sundara","doi":"10.1016/j.infbeh.2025.102032","DOIUrl":"10.1016/j.infbeh.2025.102032","url":null,"abstract":"<div><div>Theories of perceptual development differ in the extent to which initial perceptual sensitivities and language experience influence infants’ perception of speech. Extant research focuses largely on infants’ ability to distinguish native and non-native speech sound categories. In two experiments, we investigated infants’ developing perception of <em>relationships</em> between similar sounds, i.e., vowel harmony patterns, to inform this debate. In Experient 1, we showed that language experience is not necessary to detect vowel harmony; 4-month-olds without harmony experience can differentiate harmonic and disharmonic nonce words. We argue that this is due to a universal perceptual grouping bias, wherein similar sounds are perceived as being grouped together despite their temporal distance. Then in Experiment 2, we showed that without relevant language experience, this initial sensitivity to vowel harmony declines by 8-months as infants begin to tune into the sound patterns of their native language. We argue that our results, combined with previous findings, are best explained under perceptual attunement theories. When not reinforced by their language input, infants show a decline in their sensitivity to vowel harmony; but an initial sensitivity to relationships between similar vowels may facilitate infants’ learning of vowel harmony patterns in their native language.</div></div>","PeriodicalId":48222,"journal":{"name":"Infant Behavior & Development","volume":"78 ","pages":"Article 102032"},"PeriodicalIF":1.9,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143277784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role differentiated bimanual manipulation during a lab-based free play task","authors":"Paige A. Thompson,&nbsp;Amanda J. Arnold,&nbsp;Satyajit Ambike,&nbsp;Laura J. Claxton","doi":"10.1016/j.infbeh.2025.102031","DOIUrl":"10.1016/j.infbeh.2025.102031","url":null,"abstract":"<div><div>Infants spend a significant portion of their day engaging in play and accumulate immense amounts of object interactions. As infants develop, they perform increasingly complex bimanual actions, such as role differentiated bimanual manipulation (RDBM), where each hand serves a distinct role. RDBM has been well documented in structured lab settings, but these studies restrict the types of toys and postures in which infants can engage. Therefore, previous studies are limited in that they do not simulate everyday infant object interactions. Infants (39 13- and 39 24-month-olds) engaged in a 20-minute lab-based free play task designed to mimic everyday object interactions in order to assess the prevalence of RDBM and to understand the influence of posture, toy size, and toy weight on RDBM. Although both age groups frequently engaged in object interaction, RDBM did not occur as often in the lab-based free play task as found previously in structured settings. Whereas infants engaged in RDBM with toys of various sizes and weights, they favored lightweight toys and preferred to sit while engaging in RDBM. The 13-month-old infants preferred small toys while the 24-month-olds more often incorporated medium and large toys in their interactions. Examining RDBM using a lab-based free play task furthers our understanding of how complex bimanual behaviors emerge in a naturalistic setting where infants can adopt a wide range of postures and interact with a variety of toys.</div></div>","PeriodicalId":48222,"journal":{"name":"Infant Behavior & Development","volume":"78 ","pages":"Article 102031"},"PeriodicalIF":1.9,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sensitivity to temporal synchrony in audiovisual speech and language development in infants with an elevated likelihood of autism: A developmental review","authors":"Itziar Lozano ,&nbsp;Ruth Campos ,&nbsp;Mercedes Belinchón","doi":"10.1016/j.infbeh.2024.102026","DOIUrl":"10.1016/j.infbeh.2024.102026","url":null,"abstract":"<div><div>Detecting temporal synchrony in audiovisual speech in infancy is fundamental for socio-communicative development, especially for language acquisition. Autism is an early-onset and highly heritable neurodevelopmental condition often associated with language difficulties that usually extend to infants with an elevated likelihood of autism. Early susceptibilities in still unclear basic mechanisms may underlie these difficulties. Here, we discuss why sensitivity to temporal synchrony in audiovisual speech should be investigated in infants with an elevated likelihood of autism as a candidate mechanism underlying language difficulties. We then review direct and indirect eye-tracking evidence. Although scarce, some studies suggest that detection of temporal synchrony in audiovisual speech may be reduced in infant siblings (but evidence is mixed); however, this does not seem to account for language difficulties. Instead, a lack of relationship between selective attention to the articulating mouth and language development may be a plausible candidate mechanism. However, longitudinal studies tracking both sensitivity to temporal synchrony and selective attention to talking faces in the first year are needed for further clarification. Our discussion highlights gaps in the literature, future research directions and implications for domain-general approaches to the emergence of autism.</div></div>","PeriodicalId":48222,"journal":{"name":"Infant Behavior & Development","volume":"78 ","pages":"Article 102026"},"PeriodicalIF":1.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143061469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contextual differences in parent-child interactions: A study on toddlers at elevated likelihood of autism and their mothers","authors":"Julie Segers ,&nbsp;Lotte van Esch ,&nbsp;Melinda Mađarević ,&nbsp;Floor Moerman ,&nbsp;Herbert Roeyers ,&nbsp;Jean Steyaert ,&nbsp;Petra Warreyn ,&nbsp;Ilse Noens","doi":"10.1016/j.infbeh.2025.102030","DOIUrl":"10.1016/j.infbeh.2025.102030","url":null,"abstract":"<div><div>Parent-child interactions are important for children’s emotional and behavioral development. In autism research, parent-child interactions are typically observed during free play. Yet, studies outside the autism field underscored the importance of observing parent-child interactions during other contexts, as parents’ behaviors may depend on the context, and different contexts may reveal different relationships between parents’ and children’s behaviors. Therefore, we observed interactions between 102 mothers and their 24-month-old children at elevated likelihood of autism during two scenarios: free play and goal-directed play. Participating children had an older autistic sibling (<em>n</em> = 68) or were born very preterm (born before 30 weeks; <em>n</em> = 34). We found that mothers adapt their behaviors to contextual cues, which supports and expands on previous findings regarding older autistic children, and children without autism. Furthermore, as expected, the relationship between mothers’ and children’s outings of negative affect only became apparent during the goal-directed play scenario. A relationship between mothers’ and children’s outings of positive affect was found in both scenarios, thus regardless of the context. Parent-reported emotional and behavioral difficulties of children were not related to maternal behaviors during either context, nor to fluctuations in maternal behaviors across contexts. This contrasts with studies with older children, which did find such relationships. Therefore, our findings suggest that predictable patterns might not yet be visible when children’s emotional and behavioral difficulties first become apparent.</div></div>","PeriodicalId":48222,"journal":{"name":"Infant Behavior & Development","volume":"78 ","pages":"Article 102030"},"PeriodicalIF":1.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143061381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}