Previous research suggests that children infer the presence of unobserved causes when objects appear to move spontaneously. Are such inferences limited to motion events or do children assume that unexplained physical events have causes more generally? Here we introduce an apparently spontaneous event and ask whether, even in the absence of spatiotemporal and co-variation cues linking the events, toddlers treat a plausible variable as a cause of the event. Toddlers (24 months) saw a toy that appeared to light (...) up either spontaneously or after an experimenter’s action. Toddlers were also introduced to a button but were not shown any predictive relation between the button and the light. Across three different dependent measures of exploration, predictive looking (Study 1), prompted intervention (Study 2), and spontaneous exploration (Study 3), toddlers were more likely to represent the button as a cause of the light when the event appeared to occur spontaneously. In Study 4, we found that even in the absence of a plausible candidate cause, toddlers engaged in selective exploration when the light appeared to activate spontaneously. These results suggest that toddlers’ exploration is guided by the causal explanatory power of events. (shrink)

Two‐ and 3‐year‐old children (N = 96) were tested in an object‐choice task with video presentations of peer and adult partners. An immersive, semi‐interactive procedure enabled both the close matching of adult and peer conditions and the combination of participants’ choice behavior with looking time measures. Children were more likely to use information provided by adults. As the effect was more pronounced in the younger age‐group, the observed bias may fade during toddlerhood. As there were no differences in children’s propensity (...) to follow peer and adult gestures with their gaze, these findings provide some of the earliest evidence to date that young children take an interlocutor’s age into account when judging ostensively communicated testimony. (shrink)

Although very young children have unprecedented access to touchscreen devices, there is limited research on how successfully they operate these devices for play and learning. For infants and toddlers, whose cognitive, fine motor, and executive functions are immature, several basic questions are significant: Can they operate a tablet purposefully to achieve a goal? Can they acquire operating skills and learn new information from commercially available apps? Do individual differences in executive functioning predict success in using and learning from the (...) apps? Accordingly, 31 2-year-olds were compared with 29 3-year-olds using two commercially available apps with different task and skill requirements: a shape matching app performed across 3 days, and a storybook app with performance compared to that on a matched paper storybook. Children also completed the Minnesota Executive Functioning Scale. An adult provided minimal scaffolding throughout. The results showed: toddlers could provide simple goal-directed touch gestures and the manual interactions needed to operate the tablet after controlling for prior experience with shape matching, toddlers’ increased success and efficiency, made fewer errors, decreased completion times, and required less scaffolding across trials, they recognized more story content from the e-book and were less distracted than from the paper book, executive functioning contributed unique variance to the outcome measures on both apps, and 3-year-olds outperformed 2-year-olds on all measures. The results are discussed in terms of the potential of interactive devices to support toddlers’ learning. (shrink)

PurposeThis study investigated whether the ability to utilize statistical regularities from fluent speech and map potential words to meaning at 18-months predicts vocabulary at 18- and again at 24-months.MethodEighteen-month-olds were exposed to an artificial language with statistical regularities within the speech stream, then participated in an object-label learning task. Learning was measured using a modified looking-while-listening eye-tracking design. Parents completed vocabulary questionnaires when their child was 18-and 24-months old.ResultsAbility to learn the object-label pairing for words after exposure to the artificial (...) language predicted productive vocabulary at 24-months and amount of vocabulary change from 18- to 24 months, independent of non-verbal cognitive ability, socio-economic status and/or object-label association performance.ConclusionEighteen-month-olds’ ability to use statistical information derived from fluent speech to identify words within the stream of speech and then to map the “words” to meaning directly predicts vocabulary size at 24-months and vocabulary change from 18 to 24 months. The findings support the hypothesis that statistical word segmentation is one of the important aspects of word learning and vocabulary acquisition in toddlers. (shrink)

Children posit unobserved causes when events appear to occur spontaneously. What about when events appear to occur probabilistically? Here toddlers saw arbitrary causal relationships in a fixed, alternating order. The relationships were then changed in one of two ways. In the Deterministic condition, the event order changed ; in the Probabilistic condition, the causal relationships changed. As intended, toddlers looked equally long at both changes. We then introduced a previously unseen candidate cause. Toddlers looked longer at the (...) appearance of a hand and novel agent in the Deterministic than the Probabilistic conditions, but looked equally long at novel non-agents, suggesting that by 2 years of age, toddlers connect probabilistic events with unobserved agents. (shrink)

Adapting gross motor movement to match the tempo of auditory rhythmic stimulation is a complex skill with a long developmental trajectory. Drumming tasks have previously been employed with infants and young children to measure the emergence of rhythmic entrainment, and may provide a tool for identification of those with atypical rhythm perception and production. Here we describe a new protocol for measuring infant rhythmic movement that can be employed at scale. In the current study, 50 two-year-olds drummed along with the (...) audiovisual presentation of four steady rhythms, using videos of isochronous drumming at 400, 500, 600, and 700 ms IOI, and provided their spontaneous motor tempo by drumming in silence. Toddlers’ drumming is observed from video recordings made in participants’ own homes, obtained via the Lookit platform for online infant studies. We use OpenPose deep-learning model to generate wireframe estimates of hand and body location for each video. The vertical displacement of the hand was extracted, and the power and frequency of infants’ rhythmic entrainment quantified using Fast Fourier Transforms. We find evidence for age-appropriate tempo-flexibility in our sample. Our results demonstrate the feasibility of a fully digital approach to measuring rhythmic entrainment from within the participant’s home, from early in development. (shrink)

Journal of Philosophy of Education, Volume 56, Issue 1, Page 55-66, February 2022.

Journal of Philosophy of Education, Volume 56, Issue 1, Page 55-66, February 2022.

When a toddler knows a word, what does she actually know? Many categories have multiple relevant properties; for example, shape and color are relevant to membership in the category banana. How do toddlers prioritize these properties when recognizing familiar words, and are there systematic differences among children? In this study, toddlers viewed pairs of objects associated with prototypical colors. On some trials, objects were typically colored ; on other trials, colors were switched. On each trial, toddlers were (...) directed to find a target object. Overall, recognition was disrupted when colors were switched, as measured by eye movements. Moreover, individual differences in vocabularies predicted recognition differences: Toddlers who say fewer shape-based words were more disrupted by color switches. “Knowing” a word may not mean the same thing for all toddlers; different toddlers prioritize different facets of familiar objects in their lexical representations. (shrink)

There are clear associations between the overall quantity of input children are exposed to and their vocabulary acquisition. However, by uncovering specific features of the input that matter, we can better understand the mechanisms involved in vocabulary learning. We examine whether exposure to wh-questions, a challenging quality of the communicative input, is associated with toddlers' vocabulary and later verbal reasoning skills in a sample of low-income, African-American fathers and their 24-month-old children. Dyads were videotaped in free play sessions at (...) home. Videotapes were transcribed and reliably coded for sheer quantity of fathers' input as well as the number of wh-questions fathers produce. Children's productive vocabulary was measured at 24 months using the McArthur Bates Communicative Development Inventory MCDI, and children's verbal reasoning skills were measured 1 year later using the Bayley Scales of Infant Development. Results indicate that the overall quantity of father talk did not relate to children's vocabulary or reasoning skills. However, fathers' use of wh-questions related to both vocabulary and reasoning outcomes. Children's responses to wh-questions were more frequent and more syntactically complex, measured using the mean length of utterance, than their responses to other questions. Thus, posing wh-questions to 2-year-olds is a challenging type of input, which elicits a verbal response from the child that likely helps build vocabulary and foster verbal reasoning abilities. (shrink)

Children who experience well-being are engaging more confidently and positively with their caregiver and peers, which helps them to profit more from available learning opportunities and support current and later life outcomes. The goodness-of-fit theory suggests that children’s well-being might be a result of the interplay between their temperament and the environment. However, there is a lack of studies that examined the association between children’s temperament and well-being in early childhood education and care, and whether this association is affected by (...) ECEC process quality. Using a multilevel random coefficient approach, this study examines the association between toddlers’ temperament and well-being in Norwegian ECEC and investigates whether process quality moderates this association. Results reveal an association between temperament and well-being. Staff-child conflict moderates the association between shyness and well-being, and between activity and well-being. Moreover, high emotional behavioral support moderates the association between activity and well-being. Extra attention should be paid by the staff to these children’s needs. (shrink)

Data on toddler language acquisition and use support the idea of a cognitive that can resolve contradictory claims about human-animal similarities. Examples of imagination, aesthetic evaluation, theory of mind (ToM), and language learning reveal higher-order, relational, abstract capabilities early on. Although language itself may be a consequence of exercising this supermodule, it enables further cognitive operations on indirect experience to go far beyond animal accomplishments.

Cognitive Science, Volume 46, Issue 2, February 2022.

When infants and toddlers are confronted with sequences of sounds, they are required to segment the sounds into meaningful units to achieve sufficient understanding. Rhythm has been regarded as a crucial cue for segmentation of speech sounds. Although previous intermodal methods indicated that infants and toddlers could detect differences in speech sounds based on stress-timed and syllable-timed units, these methods could not clearly indicate how infants and toddlers perform sound segmentation. Thus, the present study examined whether Japanese (...) infants and toddlers could segment word speech sounds comprising basic morae, on the basis of concurrent basic mora units within syllable units, using the new intermodal matching procedure. The results indicated that, regardless of their ages and linguistic abilities, Japanese infants and toddlers aged 6–25 months tended to segment Japanese words comprising basic morae sounds on the basis of concurrent basic mora units within syllable units. This implies that infants' and toddlers' use of syllable units for segmentation of speech sounds at an early age could be evident among many infants and toddlers learning various languages. Although this finding should be interpreted carefully, the present study demonstrated the utility of the new intermodal matching procedure for examining segmentation of speech sounds and word sounds by infants and toddlers, on the basis of specific rhythm units. (shrink)

Guilt- and shame-prone responding were examined in a sample of 146, 18-month-old toddlers and their older siblings (M = 49.5 months, SD = 10.4) during mishap tasks which were used to differentiate both toddlers and their older siblings into Amenders (low avoidance) and Avoiders (high avoidance). Toddlers and older siblings classified as Amenders expressed more concern and were less distressed by the mishap than Avoiders. Children were divided into four groups: Amender-Amender (older sibling-toddler), Amender-Avoider, Avoider-Avoider, and Avoider-Amender (...) to examine differences in sibling interaction and moral development. Older siblings in the Avoider-Avoider group were significantly more aggressive and less empathic toward toddlers than older siblings in the Avoider-Amender group. Toddlers in the Amender-Amender, Amender-Avoider, and Avoider-Amender groups showed significant gains in moral regulation from 18 to 24 months whereas toddlers in the Avoider-Avoider group did not. In contrast, while older siblings were generally high on moral regulation when toddlers were 18 months, this was not the case for older siblings in the Avoider-Avoider group, who had lower moral regulation scores that significantly increased over time. Findings are discussed with respect to the significance of sibling socialisation for toddlers’ developing moral sensibility. (shrink)

The specificity of the bilingual advantage in memory was examined by testing groups of monolingual, bilingual, and trilingual 24-month-olds on tasks tapping cued recall, memory generalization and working memory. For the cued recall and memory generalization conditions, there was a 24-h delay between time of encoding and time of retrieval. In addition to the memory tasks, parent-toddler dyads completed a picture-book reading task, in order to observe emotional responsiveness, and a parental report of productive vocabulary. Results indicated no difference between (...) language groups on cued recall, working memory, emotional responsiveness, or productive vocabulary, but a significant difference was found in the memory generalization condition with only the bilingual group outperforming the baseline control group. These results replicate and extend results from past studies (Brito and Barr, 2012, 2014 ; Brito et al., 2014 ) and suggest a bilingual advantage specific to memory generalization. (shrink)

Toddlers exhibit poor transfer between video and real-world contexts. Contingently responsive video such as that found in touchscreen apps appears to assist transfer for some toddlers but not others. This study investigated the extent to which toddlers' working memory moderates the impact of contingency on toddler's transfer of learning from video. Toddlers watched a hiding event on either contingent video that advanced only after touch input or non-contingent video that proceeded automatically. Toddlers then searched for (...) a corresponding object on a felt board. Additionally, toddlers' working memory was assessed. Findings indicate WM and age moderated the impact of contingency on transfer: Contingency decreased transfer in younger children while increasing transfer among older children. However, this was only true for children with relatively low WM. Contingency had little impact on transfer among children with relatively high WM, regardless of age. Results from this study suggest that WM is one specific moderator that predicts whether toddlers are likely to learn from contingent vs. non-contingent video, yet WM does not operate in isolation. Together, these findings underscore the importance of considering multiple child characteristics when identifying the optimal conditions for toddlers' learning from symbolic media. (shrink)

Toddlerhood is characterized by rapid development in several domains, such as language, socio-emotional behavior and emerging math skills all of which are important precursors of school readiness. However, little is known about how these skills develop over time and how they may be interrelated. The current study investigates young children’s development at two time points, with about 7 months in between, assessing their language, socio-emotional and math language and numeracy skills with teacher ratings. The sample includes 577 children from 18 (...) until 36 months of age of 86 childcare classrooms. The results of the autoregressive path analyses showed moderate to strong stability of language, socio-emotional and math language and numeracy skills, although the magnitude of associations was smaller for the latter. The cross-lagged path analyses highlighted the importance of language and socio-emotional skills for development in the other domains. Differential relations were found for the autoregressive and cross-lagged paths depending on gender and age. Language skills appeared a stronger predictor of boys’ socio-emotional and math language and numeracy skill development compared to girls. Girls’ socio-emotional skills predicted growth in math. For boys, socio-emotional and math language and numeracy skills appeared to be unrelated. Language skills showed stronger relations with the development of math language and numeracy skills for younger children as compared to older children. Also, for older children math language and numeracy skills negatively predicted growth in their socio-emotional skills. The findings provide more insights in how language, math language and numeracy skills and socio-emotional skills co-develop in the early years and as such have important implications for interventions aimed to support children’s development. (shrink)

Parents of toddlers can find themselves overwhelmed and struggling with self-doubt when their child is willful, or is having trouble navigating difficult emotions and circumstances. Mindfulness can help! In The Little Frog Awakes, Eline Snel offers parents of children -ages 18 months--4 years--advice and tools for responding mindfully and effectively in the moment. These skills help us regain trust in ourselves and in the integral wholeness of our kids. And when we make mindfulness practice a part of daily life, (...) it gives our children a powerful message on how to recognize, name, and deal with emotions and situations. This practical guide will help you to connect with and respond mindfully to your own feelings as they arise; cultivate compassion for yourself as a parent; show you how to encourage serenity, self-confidence, and emotional regulation in your children; strengthen the bond with your kids and help all of you manage stress; be more fully present with your children, and more able to give them your undivided attention; embrace imperfection and focus on the things that really matter; and more The book and the accompanying audio include activities, practices, and stories for both you and for your toddler that cultivate mindful moments and action, and self-compassion. (shrink)

How do very young children use talk to create relationship? Are there associations between the quality of children’s relationships and their language use? Do children’s pragmatic abilities relate to other language competencies? This qualitative study addresses these questions using naturalistic data from a daycare setting by looking at the spontaneous peer talk in two overlapping dyads of toddler girls. This analysis indicates that young children have considerable pragmatic skill in using talk to create and maintain relationship. Children’s relational style and (...) language use seem closely connected: the different talk styles of the two dyads instantiate and support their distinct relational styles. Further, different styles of relational talk appear to tap different language abilities. Considered with other studies looking at young children’s language and particularly pragmatic skills, this analysis suggests that young children’s language capabilities in the context of specific relationships merit further attention. (shrink)

Young children typically demonstrate a transfer deficit, learning less from video than live presentations. Semantically meaningful context has been demonstrated to enhance learning in young children. We examined the effect of a semantically meaningful context on toddlers’ imitation performance. Two- and 2.5-year-olds participated in a puzzle imitation task to examine learning from either a live or televised model. The model demonstrated how to assemble a three-piece puzzle to make a fish or a boat, with the puzzle demonstration occurring against (...) a semantically meaningful background context (ocean) or a yellow background (no context). Participants in the video condition performed significantly worse than participants in the live condition, demonstrating the typical transfer deficit effect. While the context helped improve overall levels of imitation, especially for the boat puzzle, only individual differences in the ability to self-generate a stimulus label were associated with a reduction in the transfer deficit. (shrink)

BackgroundThe present study examined the efficacy of the Michigan Model of Infant Mental Health-Home Visiting infant mental health treatment to promote the socioemotional wellbeing of infants and young children. Science illuminates the role of parental “co-regulation” of infant emotion as a pathway to young children’s capacity for self-regulation. The synchrony of parent–infant interaction begins to shape the infant’s own nascent regulatory capacities. Parents with a history of childhood adversity, such as maltreatment or witnessing family violence, and who struggle with symptoms (...) of post-traumatic stress may have greater challenges in co-regulating their infant, thus increasing the risk of their children exhibiting social and emotional problems such as anxiety, aggression, and depression. Early intervention that targets the infant–parent relationship may help buffer the effect of parental risk on child outcomes.MethodsParticipants were 58 mother–infant/toddler dyads enrolled in a longitudinal randomized control trial testing the efficacy of the relationship-based IMH-HV treatment model. Families were eligible based on child age and endorsement of at least two of four socio-demographic factors commonly endorsed in community mental health settings: elevated depression symptoms, three or more Adverse Childhood Experiences parenting stress, and/or child behavior or development concerns. This study included dyads whose children were born at the time of study enrollment and completed 12-month post-baseline follow-up visits. Parents reported on their own history of ACEs and current posttraumatic stress disorder symptoms, as well as their toddler’s socioemotional development.ResultsMaternal ACEs predicted more toddler emotional problems through their effect on maternal PTSD symptoms. Parents who received IMH-HV treatment reported more positive toddler socioemotional wellbeing at follow-up relative to the control condition. The most positive socioemotional outcomes were for toddlers of mothers with low to moderate PTSD symptoms who received IMH-HV treatment.ConclusionResults indicate the efficacy of IMH-HV services in promoting more optimal child socioemotional wellbeing even when mothers reported mild to moderate PTSD symptoms. Results also highlight the need to assess parental trauma when infants and young children present with socioemotional difficulties. (shrink)

While separate pieces of research found parents offer toddlers cues to express that they are joking and pretending, and that toddlers and preschoolers understand intentions to joke and pretend, it is not yet clear whether parents and toddlers consider joking and pretending to be distinct concepts. This is important as distinguishing these two forms of non-literal acts could open a gateway to understanding the complexities of the non-literal world, as well as the complexities of intentions in general. (...) Two studies found parents offer explicit cues to help 16- to 24-month-olds distinguish pretending and joking. Across an action play study and a verbal play study parents showed more disbelief and less belief through their actions and language when joking versus pretending. Similarly, toddlers showed less belief through their actions, and older toddlers showed less belief through their language. Toddlers' disbelief could be accounted for by their response to parents' language and actions. Thus, these studies reveal a mechanism by which toddlers learn to distinguish joking and pretending. Parents offer explicit cues to distinguish these intentions, and toddlers use these cues to guide their own behaviors, which in turn allows toddlers to distinguish these intentional contexts. (shrink)

IntroductionThe Bayley Scales of Infant and Toddler Development–third edition is one of the most widely used tools for assessing child development, and adapted versions of this instrument have been successfully used in many countries. No comprehensive psychometric studies of the Bayley-III have yet been performed in Russia.Materials and methodsThis psychometric study was part of the longitudinal study conducted by the Ural Federal University in 2016–2020. Within the project, the original Bayley-III manual was translated into Russian and then used in a (...) cohort of 333 infants to assess cognition, expressive/receptive communication, and fine/gross motor skills. For the purpose of psychometric analysis, we selected the data for four age groups of children from the longitudinal study database: 4–6 months, 10 months, 15 months, and 24 months. The development scores of the sample children were compared with the original Bayley-III norms in each age strata separately. Reliability and validity of the translated instrument were examined using correlation analysis, tests of internal consistency, and confirmatory factor analysis.ResultsThe average scaled scores of the examined children were generally comparable with the original Bayley-III norms, with the exception of those older than 1 year, who demonstrated 1.2–1.9 points better performance in cognitive development and gross motor skills and 0.9–2.6 points lower performance in expressive communication. The correlation of both raw and scaled scores between different scales was low to moderate in all age groups. Internal consistency tests confirmed high reliability of the translated instrument. CFA demonstrated a good fit of the three-factor model in all age strata.ConclusionThe Russian version of the Bayley-III proved to be a psychometrically valid and reliable tool for assessing child development, at least in a research context. The development of the examined children was close to the original US norms, with some deviation in cognitive, gross motor, and expressive communication scores mostly in older children, which could be attributed to the biased sample. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:When a Conflict Collapses on a Child: An (Aborted) Medical Evacuation of a Hazara Toddler During the Kabul Airport Blast and the Taliban TakeoverAyesha AhmadI work in the capacity of an academic researching conflict in Afghanistan. My commitment is rooted in the firm terrain of friendships that merged into sisterhood of the Afghan terrain spaning decades of war but which is also the home of poetics and legacies that (...) refuse to be clouded by the traumas of the land.As a medical ethicist situated in global health, I perceive the inadequate focus on recognising the mental health needs born from living in war as a moral injustice and a form of silencing the suffering. This injustice should be held by the geopolitical hands that play the chords of conflict.However, such research is all too often concluded before it can develop as too dangerous, or too risky, or even as unethical because potential participants are perceived (often, unjustifiably so) to be too vulnerable.Another peril of research is the boundary drawn between a particular experience of the research objective and the life experience of the research participant. Connecting as a researcher and in a personal capacity, I fell into a chasm unseen in the context from where I work in London, United Kingdom.I remember the evening before Kabul city fell to the forced control of the Taliban. My friends reminisced during a nightfall reflection on the battles where the city walls had barricaded its inhabitants from centuries of invaders trying to access the valley of a city surrounded by mountains. Kabul city is a haven for war. Its geographic location makes it desirable to conquer, but part of its desirability is because of how the mountains envelop where the languages, ethnicities, religions, and stories of the Silk Road have settled and rested. Once conquered, the city protects you. And Kabulis felt safe. And to that end, on that fateful night, we ended our conversation in the confidence of hope; that Kabul city would not fall, and with the heart of the country still intact, Afghanistan would be saved.The dawn arrived and so did the approach of the Taliban to the city gates. There were frantic and rapid whispers that transformed into screams. And then the moment came, the Taliban were within the city walls.The juxtaposition between the regular London traffic heaving and breathing, and the frantic, panicked sounds of horns and vehicles fleeing in Kabul that I heard through WhatsApp audios in the background to friends narrating their journey home, was as stark as the peace and war they both echoed. [End Page 167]Soon the stories started speaking, pleading, paining, pressuring—stories seeking survival. In the dawn, instead of the sun breaking the sky, I broke the morning to a friend during a telephone conversation who had just awoken and had not yet received the news. I told my friend that the Taliban were in Kabul city. The reaction was grief, just like the grief I had heard in their voice a few months prior when their beloved father had passed away and entered the grave before they had breathed the new dawn. In the dusk, instead of the moon shining upon the city, women, families, and children were sheltering from the darkness of the grave closing amid their breathing bodies.Then, the blast came. In the energy of the quest for safety, people, walking like pilgrims, surrounded Kabul airport, queuing like worshippers. Prayers died. Hell rose. The waiting crowd was fired upon. The air did not offer breath; instead, a final moment of the sound of war that had blighted lives.In the crowd was a family who I dedicate this article to. I write the story of the father, the mother, the daughter, and the son of that day. The family was Hazara, a disputed and discriminated ethnic minority in Afghanistan, of a legacy traced to the invasion of Genghis Khan, the founder of the Mongol Empire. Theirs is a story of travellers and a soil of stories; a particularly profound story because the parents had specialised in geology and were experts of the stones of their long heritage. Yet, still, they... (shrink)

BackgroundHeavy media use has been linked to sleep problems in children, which may also extend to the infancy period. While international parent-advisory agencies, such as the American Academy of Pediatrics, advise no screen time before 18 months, parents often do not follow this recommendation. Research on Italian infants’ early access to media is sparse, and only very few studies have investigated links with sleeping habits.MethodTo address this gap, we examined concurrent associations between parent-reported surveys of child technology use and sleeping (...) patterns. The Italian version of the 60 item Comprehensive Assessment of Family Media Exposure Survey, developed as part of a larger international study,, the Brief Screening Questionnaire for Infant Sleep Problems Sadeh, 2004) were completed online by 264 Italian parents of 8- to 36-month-olds and a subset completed the Parenting Stress Index Abidin, 1995) between April 2017 and April 2018.ResultsMore devices located in the child’s room and the more time spent watching TV or using an iPad were associated with less hours of sleep at night. Furthermore, more time spent watching TV or using a smartphone, as well as the number of devices in the room was associated with going to sleep later at night. Instrumental media use was associated with less sleep.ConclusionLike other countries, Italian infants have high levels of exposure to media, and differences in media patterns were associated with sleep patterns. Cultural factors influence both instrumental reasons for media use and sleep practices. Further research should explore how media use may serve to regulate emotion as a function of both contextual factors and individual differences. (shrink)

Discovering the meaning of novel communicative cues is challenging and amounts to navigating an unbounded hypothesis space. Several theories posit that this problem can be simplified by relying on positive expectations about the cognitive utility of communicated information. These theories imply that learners should assume that novel communicative cues tend to have low processing costs and high cognitive benefits. We tested this hypothesis in three studies in which toddlers (N = 90) searched for a reward hidden in one of (...) several containers. In all studies, an adult communicated the reward's location with an unfamiliar and ambiguous cue. We manipulated the processing costs (operationalized as inferential chain length) and cognitive benefits (operationalized as informativeness) of the possible interpretations of the cues. Toddlers processing of novel communicative cues were guided by expectations of low processing costs (Study 1) and high cognitive benefits (Studies 2 and 3). More specifically, toddlers treated novel cues as if they were easy to process, informative, and accurate, even when provided with repeated evidence to the contrary. These results indicate that, from toddlerhood onward, expectations of cognitive utility shape the processing of novel communicative cues. These data also reveal that toddlers, who are in the process of learning the language and communicative conventions of people around them, exert a pressure favoring cognitive efficiency in communicative systems. (shrink)