InfancyPub Date : 2026-08-27DOI: 10.1111/infa.70123
Amanda Seidl, Boshang Yin, Bridgette Kelleher
{"title":"Touch Supports Word Segmentation More Than Statistics But is Not Mediated by Attention","authors":"Amanda Seidl, Boshang Yin, Bridgette Kelleher","doi":"10.1111/infa.70123","DOIUrl":"10.1111/infa.70123","url":null,"abstract":"<p>Multisensory information is integral to infants' language experiences and research has suggested that infants can use multisensory cues to support their segmentation of wordforms continuous speech. However, the role of multisensory cues in wordform segmentation compared to that of cues present in the acoustic stream alone (e.g., transitional probability) remains unclear. In the current study, we investigated word segmentation with aligned tactile cues in 8.5-month-old infants to explore how these infants weight tactile cues compared to, as well as in combination with, transitional probability cues. Aligned tactile cues had a significant impact on wordform segmentation and recognition performance as assessed through orientation time in Headturn Preference Procedure, while transitional probability cues did not have a significant impact. We also explored whether performance was related to attention as measured by heart rate defined sustained attention (HRDSA). Overall, duration of sustained attention assessed through HRDSA was associated with overall longer orientation times regardless of stimulus type, but HRDSA did not vary significantly with tactile cue presence/absence or transitional probabilities.</p>","PeriodicalId":47895,"journal":{"name":"Infancy","volume":"31 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/infa.70123","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148841741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InfancyPub Date : 2026-08-19DOI: 10.1111/infa.70120
Feline A. van Gelderen, Roy S. Hessels, Kelly A. Mulder, Lidewij Schipper
{"title":"The Association Between Breastfeeding Duration and Attentional and Cognitive Development in Infancy and Early Childhood","authors":"Feline A. van Gelderen, Roy S. Hessels, Kelly A. Mulder, Lidewij Schipper","doi":"10.1111/infa.70120","DOIUrl":"https://doi.org/10.1111/infa.70120","url":null,"abstract":"<p>While breastfeeding duration has been positively associated with later cognitive outcomes in childhood, behavioral assessments commonly used in early infancy may lack the sensitivity required to detect subtle differences. This study examined whether eye-tracking during infancy can be used to detect differences in attentional development related to infant feeding practices in a generally well-nourished population. Specifically, using data from the YOUth Baby & Child cohort (<i>N</i> = 2647) collected in Utrecht, the Netherlands, infant attentional disengagement was assessed around 5 months (4–6 months) and around 10 months (9–11 months) of age, alongside child receptive vocabulary around 3 years (2–4 years) and around 6 years (5–7 years) of age. While a positive association was established between breastfeeding duration and receptive vocabulary around 6 years of age, no association was established between breastfeeding duration and attentional disengagement at either timepoint. These findings suggest that effects of early-life nutrition on cognitive development in well-nourished infants do not extend to early attentional development or are too subtle to be picked up using eye-tracking. Future research could explore populations with greater developmental variability.</p>","PeriodicalId":47895,"journal":{"name":"Infancy","volume":"31 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/infa.70120","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148784637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InfancyPub Date : 2026-08-19DOI: 10.1111/infa.70116
Carlo Vreden, Eunice Ndyareeba, Herbert E. Ainamani, Rebecca Crowther, Helen Donnelly, Beatrice Forward, Brenda Kakai, Sarah Mazari, Josephine Paricia, Elizabeth Renner, John Sajabi, Katie Slocombe, Georgia Tuohy, Zanna Clay
{"title":"Cultural Variation in Emotional Reactivity and Regulation in Infants From Uganda and the UK","authors":"Carlo Vreden, Eunice Ndyareeba, Herbert E. Ainamani, Rebecca Crowther, Helen Donnelly, Beatrice Forward, Brenda Kakai, Sarah Mazari, Josephine Paricia, Elizabeth Renner, John Sajabi, Katie Slocombe, Georgia Tuohy, Zanna Clay","doi":"10.1111/infa.70116","DOIUrl":"https://doi.org/10.1111/infa.70116","url":null,"abstract":"<p>Learning to regulate one's emotions is a key feature of socio-emotional development. The still-face experiment—which measures how infants respond to a sudden change in maternal responsiveness—has long been considered a reliable indicator of infant reactivity and regulation. However, as a paradigm established to fit Western, middle-class industrialized contexts, its robustness in other cultural contexts, has been questioned. Differences in responses to the still-face experiment are likely shaped by variation in infant-caregiver interactions and practices. To expand the literature and address sampling biases, we conducted the still-face experiment with 10-month-old infants (<i>N</i> = 138, 68 female) across three sites, in rural and urban Uganda and urban UK. Across sites, we found the expected patterns of decreased infant positive affect and gaze toward their caregiver in the still-face phase. However, while infants in urban Uganda and the UK exhibited increased negative affect when their mother ceased interacting, infants from rural Uganda did not. Our findings highlight important variation across socio-cultural contexts in infant emotional reactivity and interaction style, suggesting that infants' responses to the still-face paradigm may be shaped by the broader caregiving environments in which they develop.</p>","PeriodicalId":47895,"journal":{"name":"Infancy","volume":"31 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/infa.70116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InfancyPub Date : 2026-08-17DOI: 10.1111/infa.70112
Katharina Kaletsch, Ulf Liszkowski
{"title":"Does Caregivers' Responsiveness Influence the Early Development of Deictic Gestures? Longitudinal and Training Evidence in Relation to Subsequent Language Development","authors":"Katharina Kaletsch, Ulf Liszkowski","doi":"10.1111/infa.70112","DOIUrl":"https://doi.org/10.1111/infa.70112","url":null,"abstract":"<p>Infants' deictic gestures, like hold-out-give (HoG) and pointing, are early manifestations of intentional, referential communication and predict later language acquisition. But what factors predict the early emergence of these deictic gestures? The present study investigated the longitudinal and cross-sectional influence of caregivers' responsiveness and pointing, beginning at 7 months, on infants' HoG and index-finger pointing gestures at 10 months, and infants' language abilities at 24 months. Utilizing a longitudinal design, we assessed 82 typically developing <i>German</i> infants, 42 of whom were randomly assigned to an intervention group targeted to increase caregivers' responsiveness to their infants' communicative signals and object-directed interactions. We hypothesized that in a process of social co-construction caregivers' responsiveness would enhance infants' gesture and language development. In addition, we examined the hypothesis that infants learn about reference by observing caregivers' initiative pointing gestures, in which case we expected positive associations between caregivers' initiative pointing frequency and infants' communicative development. Group comparisons at 10 months revealed increased HoG frequency in the responsiveness training group. Pointing frequency or subsequent language skills at 24 months did not differ between groups. Regression analyses revealed a positive association between caregivers' responsiveness at 10 months and infants' HoG frequency across groups. Analyses revealed no association between caregivers' initiative pointing and infants' communicative development. A predictive relation between infants' pointing frequency and their subsequent language abilities was confirmed. In support of social constructivist positions, these findings indicate that already infants' early deictic gesture use, specifically their HoGs, is influenced by caregivers' responsiveness.</p>","PeriodicalId":47895,"journal":{"name":"Infancy","volume":"31 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/infa.70112","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"It's Daddy's Turn! Development of Turn-Taking in Infant-Father Interactions and Associations With Paternal Mentalizing and Involvement","authors":"Selina Ismair, Antonia Dinzinger, Beate Priewasser, Karl Heinz Brisch, Gabriela Markova","doi":"10.1111/infa.70115","DOIUrl":"10.1111/infa.70115","url":null,"abstract":"<p>Turn-taking, the coordinated exchange of communicative signals between infants and caregivers, is vital for child communicative development. While it is considered a human universal, most research has focused on mother-infant dyads. Given fathers' increasing caregiving involvement, understanding their contribution to early communication is essential. Thus, we have examined early infant-father turn-taking and the role of fathers' mentalizing abilities, which may support turn prediction, and paternal involvement, as it may shape the frequency and quality of exchanges. We observed 39 father-infant dyads in natural interactions at 7 weeks and 6 months postpartum. Vocalizations were micro-coded and turn-taking was defined as a vocal response by one partner within 3000 ms of the other's vocalization. Mentalizing was measured via the Reflective Functioning Scale of the Parent Development Interview, while involvement was indexed by weeks of paternity leave. Results showed little change in turn-taking over time, except for a slight decline in infant turns and increase in paternal overlaps. Mixed effect models revealed significant between-dyad variability; higher mentalizing was associated with fewer paternal overlaps, and greater involvement was linked to shorter overlap durations. Findings suggest that infants are active turn-takers from early on and paternal mentalizing may support attuned coordination. Despite a relatively homogenous sample, results underscore fathers' importance in early communicative development.</p>","PeriodicalId":47895,"journal":{"name":"Infancy","volume":"31 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/infa.70115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148707977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InfancyPub Date : 2026-08-10DOI: 10.1111/infa.70114
Tommaso Ghilardi, Marlene Meyer, Claire D. Monroy, Sarah A. Gerson, Sabine Hunnius
{"title":"Statistics in Motion: Does the Infant Motor System Predict Actions Based on Their Transitional Probability?","authors":"Tommaso Ghilardi, Marlene Meyer, Claire D. Monroy, Sarah A. Gerson, Sabine Hunnius","doi":"10.1111/infa.70114","DOIUrl":"10.1111/infa.70114","url":null,"abstract":"<p>Motor theories of action prediction propose that our neural motor system combines prior knowledge about action outcomes with current sensory input to predict other people's behavior. This knowledge can be acquired through observational experience, more specifically statistical learning. Recently, it has been shown that infants can detect in a stream of actions two actions that follow each other deterministically and that their motor system uses this knowledge to predict upcoming actions. However, real-life actions are more complex: actions rarely follow one another with 100% probability, certain actions are <i>more likely</i> to follow one another than others. Here, we examined whether infants can learn the statistical structure of action sequences through observation and whether the activity of their motor system reflects the statistical likelihood of upcoming actions. We trained 18-month-old infants at home with videos of action sequences featuring different transitional probabilities. At test, motor activity was measured using EEG during identical time windows that linked actions with four probability levels. While the planned analysis did not reveal a significant effect of probability, an exploratory analysis revealed that infants' motor activity over the left-central hemisphere showed a linear relationship with transitional probability of action pairs specifically in the beginning of the experiment, when infants were not fatigued, yet. Predictive motor activity was strongest when the probability was highest and weakest when no prediction was involved. These results suggest that infants' motor system is sensitive to the statistical likelihood of upcoming actions and underline the important role of statistical learning for infants' developing action understanding.</p>","PeriodicalId":47895,"journal":{"name":"Infancy","volume":"31 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/infa.70114","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148707884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InfancyPub Date : 2026-08-04DOI: 10.1111/infa.70118
Alexandra Piuze, Sayde Jennings, Diane Poulin-Dubois
{"title":"A Test of the Cognitive Benefits of Bilingualism With the Early Childhood Inhibitory Touchscreen Task","authors":"Alexandra Piuze, Sayde Jennings, Diane Poulin-Dubois","doi":"10.1111/infa.70118","DOIUrl":"10.1111/infa.70118","url":null,"abstract":"<p>There is some evidence suggesting that bilingual children differ from monolingual children in cognitive processing due to their exposure to a more complex environment. While several studies have supported this hypothesis, most research has focused on school-age children. The present study examined whether differences in inhibitory control between monolinguals and bilinguals are present early in life with the Early Childhood Inhibitory Touchscreen Task (ECITT). This task provides a reliable measure of inhibition control in infants, requiring them to shift their responses from a previously rewarded location to a new one. It minimizes language and memory demands while engaging infants through animations, making it an ideal measure for very young children. A sample of 60 infants (mean age 20.21 months) was tested, with language exposure measured on a continuum using the Language Exposure Assessment Tool (LEAT). Vocabulary was assessed using the McArthur-Bates Communicative Development Inventory (MCDI), and inhibitory control was assessed, as well as a range of executive functions, with the Early Executive Functions Questionnaire (EEFQ). The ECITT data replicate previous research, showing that overall performance on this task improves with age. However, inhibitory control skills did not vary as a function of the amount of second language exposure. The current results suggest that inhibitory control skills do not differ as a function of language exposure diversity in toddlers younger than 24 months.</p>","PeriodicalId":47895,"journal":{"name":"Infancy","volume":"31 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13438123/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148674290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InfancyPub Date : 2026-08-03DOI: 10.1111/infa.70117
Di Liu, Lisa Feigenson
{"title":"Infants Understand That Surprise Is Caused by Novel Information","authors":"Di Liu, Lisa Feigenson","doi":"10.1111/infa.70117","DOIUrl":"https://doi.org/10.1111/infa.70117","url":null,"abstract":"<div>\u0000 \u0000 <p>Infants use others' emotional expressions to make inferences about the world, for example by inferring candidate causes of their happiness or sadness. However, one emotion—<i>surprise</i>—is less clearly linked to specific external triggers. Rather, surprise can be invoked by any entity or event, so long as it offers novel information. Surprise is thus unique among the emotions, because once an observer has encountered something new it ceases to be surprising. Do infants understand this dynamic relationship between surprise and information? Here we addressed this using a violation-of-expectation paradigm with 17- to 24-month-old infants. In Experiment 1 (<i>N</i> = 36), we found that infants who saw a person express surprise each time she peered into a box inferred that the person must have seen multiple things inside, whereas infants made no such inference after seeing the person repeatedly express happiness. In Experiment 2 (<i>N</i> = 36), we found that infants did not merely expect to see one object revealed for each instance of surprise expressed; infants recognized that surprise can also be triggered by the <i>absence</i> of objects. Finally, in Experiment 3 (<i>N</i> = 36) we found that infants recognize that surprise is a response to information that is new with respect to a particular observer. Infants were sensitive not only to the number of surprise expressions produced, but also to which person in a multi-person scene had expressed surprise. Together, these results suggest that by the end of their second year, infants represent surprise as the reflection of dynamic changes in the epistemic states of others.</p>\u0000 </div>","PeriodicalId":47895,"journal":{"name":"Infancy","volume":"31 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InfancyPub Date : 2026-07-29DOI: 10.1111/infa.70111
Arkadiusz Białek, Wim Pouw, Babajide Alamu Owoyele, Anna Filip
{"title":"Infant-Caregiver Object-Related Paired Actions as Communication Development","authors":"Arkadiusz Białek, Wim Pouw, Babajide Alamu Owoyele, Anna Filip","doi":"10.1111/infa.70111","DOIUrl":"https://doi.org/10.1111/infa.70111","url":null,"abstract":"<div>\u0000 \u0000 <p>Human communication is grounded in social interaction, and infants begin to communicate before producing their first words. In interaction with caregivers, they engage in coordinated object-related activities that may develop into paired-action sequences. We studied the emergence of such sequences in eight infant-caregiver dyads observed during monthly laboratory visits across 6 months, beginning when infants were either 7 or 8 months old. During free play with age-appropriate toys, interactions were documented using microbehavioral manual coding, enabling detailed analysis of infant-initiated, object-related joint activities. A recurrent pattern involved infants throwing an object and caregivers responding by returning it, giving rise to throwing-and-passing sequences, sometimes accompanied by coordinated gaze. Due to the less scripted and less conventionalized nature of this sequence, we observed substantial variability across dyads and sessions. To complement behavioral description, we used computer vision-based tracking of infants' object-holding hand movements and identified developmental changes in movement kinematics, specifically decreases in speed and acceleration. Our documentation of the earliest infant-initiated, object-related joint activities demonstrates that the observed throwing-and-passing sequences represent early manifestations of paired-action sequences and include elements of intentional communication.</p>\u0000 </div>","PeriodicalId":47895,"journal":{"name":"Infancy","volume":"31 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148616871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InfancyPub Date : 2026-07-27DOI: 10.1111/infa.70113
Sarah J. Rajendra, Qiqi Cheng, Leher Singh
{"title":"Predictive Sentence Parsing in Monolingual and Bilingual Learners","authors":"Sarah J. Rajendra, Qiqi Cheng, Leher Singh","doi":"10.1111/infa.70113","DOIUrl":"10.1111/infa.70113","url":null,"abstract":"<div>\u0000 \u0000 <p>There is now substantial empirical support for incremental models of speech processing where language is processed in real-time as it unfolds. Developmental studies indicate that very young children process speech incrementally, demonstrating the ability to “listen ahead.” The predictive use of linguistic information to anticipate upcoming words has primarily been studied in monolingual children from widely represented linguistic communities (e.g., English speakers). In this study, bilingual Mandarin-English-learning and monolingual English-learning Singaporean children were tested on their use of verb information to predict upcoming food and body part nouns, including in the presence of mispronunciations of the same nouns. When nouns were preceded by a constraining verb, children's target fixation increased. However, overall target fixation remained higher for correct pronunciations than for mispronunciations, suggesting that children were also sensitive to mispronunciations. Further, constraining verbs facilitated children's target fixation even in the presence of speech errors. The difference between target fixation on correct pronunciation compared to mispronunciation trials was smaller in bilinguals than monolinguals when verbs were present, and this effect appeared at a later time window across trials for monolinguals than it did for bilinguals, suggesting earlier resolution of conflicting linguistic cues in bilinguals. Findings contribute to growing knowledge about how language experience interacts with the temporal dynamics of incremental sentence processing in young learners.</p>\u0000 </div>","PeriodicalId":47895,"journal":{"name":"Infancy","volume":"31 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148608772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}