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Developmental Science

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https://www.readbyqxmd.com/read/28812318/the-development-and-flexibility-of-gaze-alternations-in-bonobos-and-chimpanzees
#1
Kelsey Lucca, Evan L MacLean, Brian Hare
Infants' early gaze alternations are one of their first steps towards a sophisticated understanding of the social world. This ability, to gaze alternate between an object of interest and another individual also attending to that object, has been considered foundational to the development of many complex social-cognitive abilities, such as theory of mind and language. However, to understand the evolution of these abilities, it is important to identify whether and how gaze alternations are used and develop in our closest living relatives, bonobos (Pan paniscus) and chimpanzees (Pan troglodytes)...
August 15, 2017: Developmental Science
https://www.readbyqxmd.com/read/28812316/literacy-acquisition-influences-children-s-rapid-automatized-naming
#2
Robin L Peterson, Anne B Arnett, Bruce F Pennington, Brian Byrne, Stefan Samuelsson, Richard K Olson
Previous research has established that learning to read improves children's performance on reading-related phonological tasks, including phoneme awareness (PA) and nonword repetition. Few studies have investigated whether literacy acquisition also promotes children's rapid automatized naming (RAN). We tested the hypothesis that literacy acquisition should influence RAN in an international, longitudinal population sample of twins. Cross-lagged path models evaluated the relationships among literacy, PA, and RAN across four time points from pre-kindergarten through grade 4...
August 15, 2017: Developmental Science
https://www.readbyqxmd.com/read/28812307/the-development-of-perceptual-averaging-learning-what-to-do-not-just-how-to-do-it
#3
Pete R Jones, Tessa M Dekker
The mature visual system condenses complex scenes into simple summary statistics (e.g., average size, location, orientation, etc.). However, children, often perform poorly on perceptual averaging tasks. Children's difficulties are typically thought to represent the suboptimal implementation of an adult-like strategy. This paper examines another possibility: that children actually make decisions in a qualitatively different way to adults (optimal implementation of a non-ideal strategy). Ninety children (6-7, 8-9, 10-11 years) and 30 adults were asked to locate the middle of randomly generated dot-clouds...
August 15, 2017: Developmental Science
https://www.readbyqxmd.com/read/28766863/do-storybooks-with-anthropomorphized-animal-characters-promote-prosocial-behaviors-in-young-children
#4
Nicole E Larsen, Kang Lee, Patricia A Ganea
For millennia, adults have told children stories not only to entertain but also to impart important moral lessons to promote prosocial behaviors. Many such stories contain anthropomorphized animals because it is believed that children learn from anthropomorphic stories as effectively, if not better than, from stories with human characters, and thus are more inclined to act according to the moral lessons of the stories. Here we experimentally tested this belief by reading preschoolers a sharing story with either human characters or anthropomorphized animal characters...
August 2, 2017: Developmental Science
https://www.readbyqxmd.com/read/28748572/let-s-chat-developmental-neural-bases-of-social-motivation-during-real-time-peer-interaction
#5
Katherine Rice Warnell, Eleonora Sadikova, Elizabeth Redcay
Humans are motivated to interact with each other, but the neural bases of social motivation have been predominantly examined in non-interactive contexts. Understanding real-world social motivation is of special importance during middle childhood (ages 8-12), a period when social skills improve, social networks grow, and social brain networks specialize. To assess interactive social motivation, the current study used a novel fMRI paradigm in which children believed they were chatting with a peer. The design targeted two phases of interaction: (1) Initiation, in which children engaged in a social bid via sharing a like or hobby, and (2) Reply, in which children received either an engaged ("Me too") or non-engaged ("I'm away") reply from the peer...
July 26, 2017: Developmental Science
https://www.readbyqxmd.com/read/28748537/differences-in-brain-morphology-and-working-memory-capacity-across-childhood
#6
Joe Bathelt, Susan E Gathercole, Amy Johnson, Duncan E Astle
Working memory (WM) skills are closely associated with learning progress in key areas such as reading and mathematics across childhood. As yet, however, little is known about how the brain systems underpinning WM develop over this critical developmental period. The current study investigated whether and how structural brain correlates of components of the working memory system change over development. Verbal and visuospatial short-term and working memory were assessed in 153 children between 5.58 and 15.92 years, and latent components of the working memory system were derived...
July 26, 2017: Developmental Science
https://www.readbyqxmd.com/read/28736940/seven-year-olds-aggressive-choices-in-a-computer-game-can-be-predicted-in-infancy
#7
Dale F Hay, Mark K Johansen, Peter Daly, Salim Hashmi, Charlotte Robinson, Stephan Collishaw, Stephanie van Goozen
Concerns about the relationship between computer games and children's aggression have been expressed for decades, but it is not yet clear whether the content of such games evokes aggression or a prior history of aggression promotes children's interest in aggressive games. Two hundred and sixty-six 7-year-old children from a nationally representative longitudinal sample in the UK played a novel computer game (CAMGAME) in which the child's avatar encountered a series of social challenges that might evoke aggressive, prosocial or neutral behaviour...
July 24, 2017: Developmental Science
https://www.readbyqxmd.com/read/28722292/investigating-the-origins-of-political-views-biases-in-explanation-predict-conservative-attitudes-in-children-and-adults
#8
Larisa J Hussak, Andrei Cimpian
We tested the hypothesis that political attitudes are influenced by an information-processing factor - namely, a bias in the content of everyday explanations. Because many societal phenomena are enormously complex, people's understanding of them often relies on heuristic shortcuts. For instance, when generating explanations for such phenomena (e.g., why does this group have low status?), people often rely on facts that they can retrieve easily from memory - facts that are skewed toward inherent or intrinsic features (e...
July 18, 2017: Developmental Science
https://www.readbyqxmd.com/read/28722249/memory-in-3-month-old-infants-benefits-from-a-short-nap
#9
Klára Horváth, Benjamin Hannon, Peter P Ujma, Ferenc Gombos, Kim Plunkett
A broad range of studies demonstrate that sleep has a facilitating role in memory consolidation (see Rasch & Born, ). Whether sleep-dependent memory consolidation is also apparent in infants in their first few months of life has not been investigated. We demonstrate that 3-month-old infants only remember a cartoon face approximately 1.5-2 hours after its first presentation when a period of sleep followed learning. Furthermore, habituation time, that is, the time to become bored with a stimulus shown repetitively, correlated negatively with the density of infant sleep spindles, implying that processing speed is linked to specific electroencephalographic components of sleep...
July 18, 2017: Developmental Science
https://www.readbyqxmd.com/read/28703876/foundations-of-infants-social-group-evaluations
#10
Anthea Pun, Matar Ferera, Gil Diesendruck, J Kiley Hamlin, Andrew Scott Baron
Previous research has suggested that infants exhibit a preference for familiar over unfamiliar social groups (e.g., preferring individuals from their own language group over individuals from a foreign language group). However, because past studies often employ forced-choice procedures, it is not clear whether infants' intergroup preferences are driven by positivity toward members of familiar groups, negativity toward members of unfamiliar groups, or both. Across six experiments, we implemented a habituation procedure to independently measure infants' positive and negative evaluations of speakers of familiar and unfamiliar languages...
July 13, 2017: Developmental Science
https://www.readbyqxmd.com/read/28701027/children-reading-spoken-words-interactions-between-vocabulary-and-orthographic-expectancy
#11
Signy Wegener, Hua-Chen Wang, Peter de Lissa, Serje Robidoux, Kate Nation, Anne Castles
There is an established association between children's oral vocabulary and their word reading but its basis is not well understood. Here, we present evidence from eye movements for a novel mechanism underlying this association. Two groups of 18 Grade 4 children received oral vocabulary training on one set of 16 novel words (e.g., 'nesh', 'coib'), but no training on another set. The words were assigned spellings that were either predictable from phonology (e.g., nesh) or unpredictable (e.g., koyb). These were subsequently shown in print, embedded in sentences...
July 12, 2017: Developmental Science
https://www.readbyqxmd.com/read/28681391/developmental-trajectory-of-neural-specialization-for-letter-and-number-visual-processing
#12
Joonkoo Park, Berry van den Berg, Crystal Chiang, Marty G Woldorff, Elizabeth M Brannon
Adult neuroimaging studies have demonstrated dissociable neural activation patterns in the visual cortex in response to letters (Latin alphabet) and numbers (Arabic numerals), which suggest a strong experiential influence of reading and mathematics on the human visual system. Here, developmental trajectories in the event-related potential (ERP) patterns evoked by visual processing of letters, numbers, and false fonts were examined in four different age groups (7-, 10-, 15-year-olds, and young adults). The 15-year-olds and adults showed greater neural sensitivity to letters over numbers in the left visual cortex and the reverse pattern in the right visual cortex, extending previous findings in adults to teenagers...
July 5, 2017: Developmental Science
https://www.readbyqxmd.com/read/28677331/age-related-differences-in-subjective-recollection-erp-studies-of-encoding-and-retrieval
#13
Leslie Rollins, Tracy Riggins
The ability to mentally re-experience past events improves significantly from childhood to young adulthood; however, the mechanisms underlying this ability remain poorly understood, partially because different tasks are used across the lifespan. This study was designed to address this gap by assessing the development of event-related potential (ERP) correlates associated with subjective indices of recollection. Children, adolescents, and adults performed Tulving's () remember/know paradigm while ERPs were recorded during memory encoding (Experiment 1) and retrieval (Experiment 2)...
July 4, 2017: Developmental Science
https://www.readbyqxmd.com/read/28675671/accent-detection-and-social-cognition-evidence-of-protracted-learning
#14
Sarah C Creel
How and when do children become aware that speakers have different accents? While adults readily make a variety of subtle social inferences based on speakers' accents, findings from children are more mixed: while one line of research suggests that even infants may be acutely sensitive to accent unfamiliarity, other studies suggest that 5-year-olds have difficulty identifying accents as different from their own. In an attempt to resolve this paradox, the current study assesses American children's sensitivity to American vs...
July 3, 2017: Developmental Science
https://www.readbyqxmd.com/read/28639383/longitudinal-associations-between-low-morning-cortisol-in-infancy-and-anger-dysregulation-in-early-childhood-in-a-cps-referred-sample
#15
Allison Frost, Caitlin Jelinek, Kristin Bernard, Teresa Lind, Mary Dozier
Children who experience early adversity are at increased risk for developing psychopathology, and dysfunction of the hypothalamic pituitary adrenal (HPA) axis is a possible mechanism conferring this risk. This study sought to characterize the association between morning cortisol during different developmental periods and deficits in children's emotion regulation, a core feature of many psychological disorders. Morning cortisol was collected at two time points (i.e., during infancy, M = 13.0 months old, and during early childhood, M = 36...
June 21, 2017: Developmental Science
https://www.readbyqxmd.com/read/28635049/a-neural-network-model-for-development-of-reaching-and-pointing-based-on-the-interaction-of-forward-and-inverse-transformations
#16
Naohiro Takemura, Toshio Inui, Takao Fukui
Pointing is one of the communicative actions that infants acquire during their first year of life. Based on a hypothesis that early pointing is triggered by emergent reaching behavior toward objects placed at out-of-reach distances, we proposed a neural network model that acquires reaching without explicit representation of 'targets'. The proposed model controls a two-joint arm in a horizontal plane, and it learns a loop of internal forward and inverse transformations; the former predicts the visual feedback of hand position and the latter generates motor commands from the visual input through random generation of the motor commands...
June 20, 2017: Developmental Science
https://www.readbyqxmd.com/read/28631413/young-children-seek-out-biased-information-about-social-groups
#17
Harriet Over, Adam Eggleston, Jenny Bell, Yarrow Dunham
Understanding the origins of prejudice necessitates exploring the ways in which children participate in the construction of biased representations of social groups. We investigate whether young children actively seek out information that supports and extends their initial intergroup biases. In Studies 1 and 2, we show that children choose to hear a story that contains positive information about their own group and negative information about another group rather than a story that contains negative information about their own group and positive information about the other group...
June 20, 2017: Developmental Science
https://www.readbyqxmd.com/read/28620940/young-children-discover-how-to-deceive-in-10%C3%A2-days-a-microgenetic-study
#18
Xiao Pan Ding, Gail D Heyman, Genyue Fu, Bo Zhu, Kang Lee
We investigated how the ability to deceive emerges in early childhood among a sample of young preschoolers (Mean age = 34.7 months). We did this via a 10-session microgenetic method that took place over a 10-day period. In each session, children played a zero-sum game against an adult to win treats. In the game, children hid the treats and had opportunities (10 trials) to win them by providing deceptive information about their whereabouts to the adult. Although children initially showed little or no ability to deceive, most spontaneously discovered deception and systematically used it to win the game by the tenth day...
June 16, 2017: Developmental Science
https://www.readbyqxmd.com/read/28597549/lexical-processing-efficiency-leverages-novel-word-learning-in-infants-and-toddlers
#19
Jill Lany
Children who rapidly recognize and interpret familiar words typically have accelerated lexical growth, providing indirect evidence that lexical processing efficiency (LPE) is related to word-learning ability. Here we directly tested whether children with better LPE are better able to learn novel words. In Experiment 1, 17- and 30-month-olds were tested on an LPE task and on a simple word-learning task. The 17-month-olds' LPE scores predicted word learning in a regression model, and only those with relatively good LPE showed evidence of learning...
June 9, 2017: Developmental Science
https://www.readbyqxmd.com/read/28585226/transient-sex-differences-during-adolescence-on-auditory-perceptual-tasks
#20
Julia Jones Huyck, Beverly A Wright
Many perceptual abilities differ between the sexes. Because these sex differences have been documented almost exclusively in adults, they have been attributed to sex-specific neural circuitry that emerges during development and is maintained in the mature perceptual system. To investigate whether behavioral sex differences in perception can also have other origins, we compared performance between males and females ranging in age from 8 to 30 years on auditory temporal-interval discrimination and tone-in-noise detection tasks on which there are no sex differences in adults...
June 5, 2017: Developmental Science
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