AimThis study aimed to determine the longitudinal impact of the EArly Collaborative Intervention (EACI), a three-session early intervention designed to enhance parent-infant interaction, on the developmental outcomes of preterm infants born between 30 + 0 and 35 + 6 weeks of gestation.MethodsThis randomised controlled blinded study recruited families in two neonatal intensive care units in Sweden. In this one-year follow-up, 87 infants (standard care = 37, standard care with EACI = 50) were included in the intention-to-treat analysis. The primary study outcomes were cognition, receptive and expressive communication, and fine and gross motor development measured with the Bayley-III.ResultsAt one year of age (mean age 13.1 months SD = 0.64), there was a statistically significant effect in the intention-to-treat analysis on receptive communication F(1, 85) = 4.61, p = 0.035, eta 2 = 0.051. No statistically significant effects were found on the other Bayley-III outcome measures. There were no significant differences between the groups regarding gestational age, birth weight, gender, parents' education, or age at assessment.ConclusionThis new intervention indicates a small positive effect on moderate-to-late preterm infants' communication ability at one year of age. Though the attrition rate was relatively large, results are encouraging since clinical interventions supporting moderate-to-late preterm infants and parents are lacking.Trial Registration: NCT02034617

A child’s vocabulary ability may be influenced by many different factors in their home environment. The present study focused on supportive aspects in home environments and the relation to children’s vocabulary size through an online study where 166 parents of children aged 47.63 months (range 33.7–59.9 months) responded. Children’s home literacy environments were positively associated with children’s vocabulary size. Aspects of the home environment such as the parents engaging in teaching colors, and letters and talking about daily activities showed a positive association with vocabulary size. Print book reading was important, but the number of books the parents read did not seem to be associated with vocabulary size, rather whether the parent was engaging in dialogical reading and discussing the books, explaining the content, and relating the content to the life of the child mattered. Digital media (screen media and digital games) did not show a positive association with vocabulary, regardless of content or parents’ joint media engagement. Watching screen media showed a negative association with developing vocabulary. This association was, however, ameliorated when positive influences and activities in the home literacy environment were present.

Memory develops across the course of the first years of life and is influenced by daily experiences, such as exposure to media like books and television. Memory as tapped by Deferred imitation (DI) requires that toddlers form a representation of the target actions that they can later use to reproduce the actions and in addition to measuring memory for real live events, it can also be used to measure memory for events viewed through media. Toddlers are frequently exposed to multiple forms of digital media in addition to more traditional forms of picture book reading. In a within-subjects design, memory was assessed with a DI task in 2-year-olds (n = 89) using the Frankfurt Imitation Test. Deferred imitation was assessed after live and video demonstrations. Parents completed a survey about children's media use. Picture book reading for less than 30 min a day predicted lower memory scores for actions demonstrated live. Watching video content for more than 1 h a day predicted lower memory scores for actions demonstrated on video. Results are interpreted in terms of individual differences in experiences of traditional and digital media and the development of symbolic understanding.

Although prior research has independently linked vocabulary development with toddlers media usage, parental mental state talk (MST), and parent-child conversational turn-taking (CTT), these variables have not been investigated within the same study. In this study, we focus on associations between these variables and 2-year-olds (N = 87) vocabulary. Child vocabulary and digital media use were measured through online questionnaires. We took a multimethod approach to measure parents child-directed talk. First, we used a home sound environment recording (Language ENvironment Analysis technology) to estimate parents talk (CTT). Second, parents narrated a picture book, the Frog story, to assess the parents MST. There was a negative association between how much children watched video content and their vocabulary. However, parents reported that they frequently co-viewed and engaged with the child and media. The negative association first displayed between the amount of video content viewed and the childs developing vocabulary was fully mediated by the parents qualitative and quantitative talk as measured by MST and CCT, respectively. We propose that the parent relative level of MST and CTT also occurs when parents engage with the child during media use.

This article provides a description of eye movement data collected during an ocular-motor serial reaction time task. Raw gaze data files for 63 infants and 24 adults along with the data processing and analysis script for extracting saccade latencies, summarizing participants performance, and testing statistical differences, are hosted on Open Science Framework (OSF). Files (in Matlab format) available for download allow for replication of the results reported in "Procedural memory in infancy: Evidence from implicit sequence learning in an eye-tracking paradigm" [1]. (C) 2020 The Authors. Published by Elsevier Inc.

Infants early visual preferences for faces, and their observational learning abilities, are well-established in the literature. The current study examines how infants attention changes as they become increasingly familiar with a person and the actions that person is demonstrating. The looking patterns of 12- (n = 61) and 16-month-old infants (n = 29) were tracked while they watched videos of an adult presenting novel actions with four different objects three times. A face-to-action ratio in visual attention was calculated for each repetition and summarized as a mean across all videos. The face-to-action ratio increased with each action repetition, indicating that there was an increase in attention to the face relative to the action each additional time the action was demonstrated. Infants prior familiarity with the object used was related to face-to-action ratio in 12-month-olds and initial looking behavior was related to face-to-action ratio in the whole sample. Prior familiarity with the presenter, and infant gender and age, were not related to face-to-action ratio. This study has theoretical implications for face preference and action observations in dynamic contexts.

Saccade latency is widely used across infant psychology to investigate infants’ understanding of events. Interpreting particular latency values requires knowledge of standard saccadic RTs, but there is no consensus as to typical values. This study provides standard estimates of infants’ (n = 194, ages 9 to 15 months) saccadic RTs under a range of different spatiotemporal conditions. To investigate the reliability of such standard estimates, data is collected at 4 laboratories in 3 countries. Results indicate that reactions to the appearance of a new object are much faster than reactions to the deflection of a currently fixated moving object; upward saccades are slower than downward or horizontal saccades; reactions to more peripheral stimuli are much slower; and this slowdown is greater for boys than girls. There was little decrease in saccadic RTs between 9 and 15 months, indicating that the period of slow development which is protracted into adolescence begins in late infancy. Except for appearance and deflection differences, infant effects were weak or absent in adults (n = 40). Latency estimates and spatiotemporal effects on latency were generally consistent across laboratories, but a number of lab differences in factors such as individual variation were found. Some but not all differences were attributed to minor procedural differences, highlighting the importance of replication. Confidence intervals (95%) for infants’ median reaction latencies for appearance stimuli were 242 to 250 ms and for deflection stimuli 350 to 367 ms. (PsycINFO Database Record (c) 2017 APA, all rights reserved)

Deferred imitation (DI) may be regarded as an early declarative-like memory ability shaping the infant's ability to learn about novelties and regularities of the surrounding world. In the current longitudinal study, infants were assessed at 9 and 16months. DI was assessed using five novel objects. Each infant's communicative development was measured by parental questionnaires. The results indicate stability in DI performance and early communicative development between 9 and 16months. The early achievers at 9months were still advanced at 16months. Results also identified a predictive relationship between the infant's gestural development at 9months and the infant's productive and receptive language at 16months. Moreover, the results show that declarative memory, measured with DI, and gestural communication at 9months independently predict productive language at 16months. These findings suggest a connection between the ability to form non-linguistic and linguistic mental representations. These results indicate that the child's DI ability when predominantly preverbal might be regarded as an early domain-general declarative memory ability underlying early productive language development.

Aims/hypothesis The aim of this study was to prospectively investigate whether psychological stress during childhood may be a risk factor for manifest type 1 diabetes. Methods The All Babies In Southeast Sweden (ABIS) study invited all families with babies born between 1 October 1997 and 30 September 1999 in southeast Sweden to participate. Our study subsample includes 10,495 participants in at least one of the data collections at 2-3, 5-6, 8 and 10-13 years of age not yet diagnosed with type 1 diabetes at inclusion; 58 children were subsequently diagnosed. Age at diagnosis was obtained from the national register SweDiabKids in 2012. Family psychological stress was measured via questionnaires given to the parents assessing serious life events, parenting stress, parental worries and the parents social support. Results Childhood experience of a serious life event was associated with a higher risk of future diagnosis of type 1 diabetes (HR 3.0 [95% CI 1.6, 5.6], p = 0.001) after adjusting for heredity of type 1 diabetes and age at entry into the study. The result was still valid when controlling for heredity of type 2 diabetes, size for gestational age, the parents education level and whether the mother worked at least 50% of full time before the childs birth (HR 2.8 [95% CI 1.5, 5.4], p = 0.002), and also when childhood BMI was added to the model (HR 5.0 [95% CI 2.3, 10.7], p less than 0.001). Conclusions/interpretation This first prospective study concluded that experience of a serious life event in childhood may be a risk factor for manifest type 1 diabetes.

This study aims to investigate the association between experiences of serious life events assessed by checklists longitudinally across childhood (at age 5-6, age 8, and age 12-14 years) and level of mental health problems in early adolescence (at age 12-14), and the mediating role of family climate factors across childhood. Questionnaire data from the All Babies In Southeast Sweden (ABIS) population based cohort-study were used (n=1132). The association were best modelled with a sequential cumulative approach; that means that the number of time-periods at least one serious life event was experienced were linearly related to the level of mental health problems (SDQ-score) after controlling for age, sex/gender, parental educational level, immigrant status and fuzzy/difficult temperament at age 2-3 (b=0.58 [95% CI 0.28, 0.87], p<0.001). Parenting stress and the parents size and satisfaction of social support were found as moderating factors, where the association between serious life events and mental health problems only were found in the subgroups of families where the parent perceive chronically high levels of parenting stress (high at 3-4 times of 4 possible; n=163, b=1.28 [0.55, 2.01], p=0.001), have a small social network (n=108, p=1.75 [0.86, 2.64], p<0.001), and are dissatisfied with their social support (n=95, p=1.22 [0.36, 2.09], p=0.006). An absence of parenting stress across childhood and adequate social support for the parents are suggested as resilient factors. To avoid negative consequences for child mental health after experiences of stressful life events, parents should get adequate support in child health services.