Resting EEG correlates of neurodevelopment in a socioeconomically and linguistically diverse sample of toddlers: Wave 1 of the Kia Timata Pai best start New Zealand study.

Development of communication and self-regulation skills is fundamental to psychosocial maturation in childhood. The Kia Timata Pai Best Start (KTP) longitudinal study aims to promote these skills through interventions delivered at early childcare centers across New Zealand. In addition to evaluating effects of the interventions on behavioral and cognitive outcomes, the study utilizes electroencephalography (EEG) to characterize cortical development in a subsample of participating children. Here, we present results of the baseline resting EEG assessment with 193 children aged 15 to 33 months. We identified EEG correlates of individual differences in demographics, communication abilities, and temperament. We obtained communication and behavior ratings from multiple informants, and we applied contemporary analytic methods to the EEG data. Periodic spectral power adjusted for aperiodic activity was most closely associated with demographic, language, and behavioral measures. As in previous studies, gamma power was positively associated with verbal language. Alpha power was positively associated with effortful control. Nonverbal and verbal language measures showed distinct associations with EEG indices, as did the three temperament domains. Our results identified a number of candidate EEG measurements for use as longitudinal markers of optimal cortical development and response to interventions in the KTP cohort.

Kia Timata Pai (Best Start): a study protocol for a cluster randomised trial with early childhood teachers to support children's oral language and self-regulation development.

INTRODUCTION: Oral language skills are associated with children's later self-regulation and academic skills; in turn, self-regulation in early childhood predicts successful functioning later in life. The primary objective of this study is to evaluate the separate and combined effectiveness of an oral language intervention (Enhancing Rich Conversations, ENRICH) and a self-regulation intervention (Enhancing Neurocognitive Growth with the Aid of Games and Exercise, ENGAGE) with early childhood teachers and parents for children's oral language, self-regulation and academic functioning. METHODS AND ANALYSIS: The Kia Timata Pai (Best Start) study is a cluster randomised controlled trial with teachers and children in approximately 140 early childhood centres in New Zealand. Centres are randomly assigned to receive either oral language intervention only (ENRICH), self-regulation intervention only (ENGAGE), both interventions (ENRICH+ENGAGE) or an active control condition. Teachers' and parents' practices and children's oral language and self-regulation development are assessed at baseline at age 1.5 years and approximately every 9 months to age 5, and academic performance at age 6. Teacher-child interactions will also be videotaped each year in a subset of the centres. Children's brain and behaviour development and parent-child interactions will be assessed every 6 months to age 6 years in a subgroup of volunteers. ETHICS AND DISSEMINATION: The Kia Timata Pai trial and the two substudies (Video Project; Brain and Behaviour Development) have been approved by the University of Otago Human Ethics Committee (Health; H20/116), and reviewed for cultural responsiveness by: the Ngai Tahu Research Committee (University of Otago), the Maori Advisory Group (University of Auckland, Liggins Institute) and an internal cultural advisory group. Results will be disseminated in international and national peer-reviewed academic journals and communicated to local, national and international organisations serving early childhood teachers, parents and young children. Data will be available via communication with the corresponding author. TRIAL REGISTRATION NUMBER: ACTRN12621000845831.

How three generations narrate their vicarious family stories: intrafamilial similarities, gender and cross-generational differences.

This study investigated the memory characteristics of vicarious family stories. Seventy-two families including three generations of women and men from different samples of families were recruited. Results can be described in three main sections: (a) intrafamilial similarities; (b) gender differences; and (c) cross-generational differences. For intrafamilial similarities, members of the same family showed similarities in terms of the volume and number of other-related words. For gender differences, women focused more on social interactions, used more other-related words and subjective perspective terms, and made more identity connections between others and parents than men. When describing parents' reasons for telling family stories, women were also less likely to report development and teaching reasons and more likely to report emotional reasons compared to men. For cross-generational differences, the oldest generation's stories were less coherent than the youngest and middle generations', and less voluminous than the middle generation's. Additionally, the youngest generation reported entertainment reasons more often than the oldest generation. Emotional reasons were more common for the middle generation than for the youngest and oldest generations. These findings contribute to the growing area of research on family narratives by examining the elements of narrative identity in family stories across three generations.