Four longitudinal models are used to present a short review of research into adolescent psychosocial development. This review reveals adolescent development to proceed in a regular manner. This process of regular development suggests that it might be possible to uncover rules of intra-individual development. The aim of this paper is to propose a…

Communication is commonly viewed as connecting people through conscious symbolic processes. Infants have an immature communication toolbox, raising the question of how they form a sense of connectedness. In this article, we propose a framework for infants' communication, emphasizing the subtle unconscious behaviors and autonomic contingent signals…

In order for children to understand and reason about the world in an adult-like fashion, they need to learn that conceptual categories are organized in a hierarchical fashion (e.g., a dog is also an animal). While children learn from their first-hand observation of the world, social knowledge transmission via language can also play an important…

Guided by evolutionary-developmental models, this study tested the hypothesis that children's exposure to parental relationship instability, defined by initiation and dissolution of caregiver intimate relationships, has both costs in cognitive impairments and benefits in enhanced learning skills. Participants included 243 mothers and their…

The importance of parent-child relationships for child developmental outcomes suggests a need to incorporate a relationship focus into early intervention programs for children with developmental delays. Nevertheless, confusion exists about the definition and application of relationship-focussed interventions, and occupational therapists remain…

This study tested an empirical model of the relationship between "Personal Positive Youth Development" (PPYD) and two contextual factors: "Positive Parenting" (PP), and "Perception of the Climate and Functioning of the School" (PcfS). The hypothesis tested was that a positive relationship with parents and a positive…

We examined the prototype v. revisionist models of attachment stability with a five-wave, 6-year, longitudinal study of attachment security from middle childhood to adolescence in a White Western European sample (N = 157; Wave 1 M[subscript age] = 10.91, SD = 0.87; 52% female). Attachment was assessed using both questionnaire (Experiences in Close…

There is evidence that children of incarcerated parents are at risk of poor developmental and educational outcomes. However, much of this evidence is limited by biased samples, as studies must rely on opt-in recruitment. Administrative data present an opportunity to overcome this challenge, as they capture information on all incarcerated…

Currently, a growing number of teaching approaches focus on aspects of variation in language (e.g. English as a Lingua Franca (ELF), World Englishes, English for Specific Purposes (ESP), genre theories, etc.); however, each of these approaches tends to focus on particular (specific) aspects of language variation and do not fully account for the…

Genetic and environmental factors account for variability in a range of developmental outcomes, including socioeconomic status (SES). The challenge is to find ways to incorporate genetic information based on studies using biologically related family members (i.e., studies not involving twins). To address this issue, we computed polygenic scores…

Extreme wealth inequality imposes significant constraints on financially vulnerable families, especially on the development of children in those families. Child Development Accounts (CDAs)--investment accounts offering financial access, subsidies, and incentives to provide assets for children--are designed to reduce wealth inequality over time and…

There is a growing interest on the role of noncognitive factors such as personality traits and implicit beliefs in accounting for individual differences in academic performance. Autonomy support from primary socializing agents too is an important tool for enhancing student motivation and other learning outcomes. In this study, we tested a model…

The Coaching Early Conversation Interaction and Language (CECIL) Project, which started in September 2020, has focused on exploring coaching-led approaches to support the effective implementation of early language interventions, especially in Private, Voluntary & Independent (PVI) settings. At the core of the CECIL approach is a way of…

Linguistic alignment--the contingent reuse of our interlocutors' language at all levels of linguistic structure--pervades human dialogue. Here, we design unique measures to capture the degree of linguistic alignment between interlocutors' linguistic representations at three levels of structure: lexical, syntactic, and semantic. We track these…

We evaluate here the performance of four models of cross-situational word learning: two global models, which extract and retain multiple referential alternatives from each word occurrence; and two local models, which extract just a single referent from each occurrence. One of these local models, dubbed "Pursuit," uses an associative…