In a national survey of U.S. adults, the number of close friends increased with age and 76% reported having three or more. However, 8% reported having none. There are limited parallel data for gifted learners but the survey provided an opportunity to compare the two groups. The numbers of close friends for gifted learners appears to increase from…

When perceiving emotional facial expressions, adults use a template-matching strategy, comparing the perceived face with a stored representation. A rejection of unnaturally exaggerated faces is characteristic of this strategy because the exaggerated expressions do not match the stored template. In contrast, a rule-based perceptual strategy (e.g.,…

Trajectories of cognitive and neural development suggest that, despite early emergence, the ability to extract environmental patterns changes across childhood. Here, 5- to 9-year-olds and adults (N = 211, 110 females, in a large Canadian city) completed a memory test assessing what they remembered after watching a stream of shape triplets: the…

This study examines the expression of simultaneity in the film-based oral narratives of 100 English monolinguals in the following three age groups: preschoolers (4-6 years), school-aged children (7-10 years), and adults (19-48 years). Participants told a story of what happened in the film, in an off-line task, to an interviewer who had not seen…

When semantically-related photos appear with true-or-false trivia claims, people more often rate the claims as true compared to when photos are absent--"truthiness." This occurs even when the photos lack information useful for assessing veracity. We tested whether truthiness changed in magnitude as a function of participants' age in a…

We examined Canadian host-society children's prosociality (i.e., emotions and behaviors that reflect care for the welfare of others) toward refugee newcomer peers and the role of parental socialization (i.e., frequency of parent-child conversations about refugee newcomers) in children's refugee-specific prosociality. The sample included 168…

Introduction: Mental health concerns have been noted to be highly prevalent for youth with intellectual disability (ID), with or without autism spectrum disorder (ASD). The purpose of the current study was to examine a Canadian sample of youth with ID, with or without ASD, to explore caregiver-reported percentages, predictors, and treatment…

"Place value," which underlies the meanings of multidigits, encompasses the principle of position and base-10 rules. To understand 65, one needs to know that the digits 6 and 5 occupy different positions and thus represent ordered values of different magnitudes (i.e., the "principle of position") and that the value of each…

The roles of culture and age in Canadian and Persian children's moral evaluations of lie- and truth-telling in modest situations, as well as the impacts of parenting disciplinary methods, were assessed in this study. Data were collected from 360 children total: 180 children from both Canada and Iran. Participants' were 5, 7, 9, and 11 years of age…

Introduction: Compared to their neurotypical peers, children and adolescents with neurodevelopmental disorders (NDs) experience worse mental health outcomes, including greater service use and functional impairment. Few studies, however, have examined the neurodevelopmental contributions to mental health complexity among those seeking…

We conducted a meta-analytic review of 53 studies published between 2000 and 2020 to quantify associations of parents' emotion regulation with parenting behavior and children's emotion regulation and internalizing and externalizing symptoms. Twelve meta-analyses, which included between 4 to 22 effect sizes (N from 345 to 3609), were conducted to…

This study examined the effect of a child passing or failing the UK truth and lies discussion (TLD) compared with the Canadian promise to tell the truth on mock jurors' decisions regarding witness credibility and truthfulness and defendant guilt. Ninety-two participants read a vignette that described a child witnessing his father physically…

Despite the well-established protective functions of guilt across childhood, its underlying physiological mechanisms have received little attention. We used latent difference scores (LDS) to model changes in children's (N = 267; 4- and 8-year-olds, 51% girls) skin conductance (SC) and respiratory sinus arrhythmia (RSA) while they imagined…

We tested theories of links between musical expertise and language ability in a sample of 6- to 9-year-old children. Language ability was measured with tests of speech perception and grammar. Musical expertise was measured with a test of musical ability that had 3 subtests (melody discrimination, rhythm discrimination, and long-term memory for…

This study measured physical activity (PA) and explored its correlates among children with multimorbidity (co-occurring chronic physical and mental illness; MM) versus those with chronic physical illness only (PI). This study used baseline data from the Multimorbidity in Children and Youth Across the Life Course (MY LIFE) study, an on-going cohort…