Search

Children start preschool with large individual differences in their early numerical abilities. Little is known about the importance of heterogeneous patterns that exist within these individual differences. A person-centered analytic approach might be helpful to unravel these patterns and the cognitive and environmental factors that are associated with them. We applied a person-centered approach to a 5-year longitudinal study (N = 410, 213 boys) conducted in Belgium from preschool to grade 3. Preschoolers (M[subscript age] = 58.14 months, SD[subscript age] = 3.51) were selected to represent the full range of socioeconomic backgrounds. We examined via Latent Profile Analysis the heterogeneous patterns that exist in preschoolers' early numerical development using measures of counting, numeral identification, comparison, ordering, and arithmetic abilities. We investigated the association between the derived numerical ability pathways, general cognitive factors (working memory, language, spatial ability) and the home math environment. We also evaluated the relation of these early numerical ability pathways to later mathematics achievement in grade 1 and 3. Four longitudinal pathways emerged: a low (15%), below-average (28%), above-average (44%), and a high numerical ability pathway (13%). Differences between the four pathways were mostly quantitative. Most of the general cognitive factors contributed to pathway membership, whereas the home math environment and socioeconomic status (SES) did not. The pathways differed in mathematics achievement in grade 1 and 3, and most of these differences remained when the covariates were considered. The results highlight the heterogeneity that is already present in preschoolers' numerical abilities and their predictive value for subsequent mathematics achievement.

In an experimental design, we examined the effects of middle-term training in social information processing (SIP) and in Theory of Mind (ToM) on preschoolers' social cognition and social adjustment. 48 preschoolers took part in a pre-test and post-test session involving cognitive, socio-cognitive and social adjustment (direct and indirect) measures. They were allocated at random to an experimental group (subgroups of 4 children attended 15 45-minute sessions in which they received ToM and SIP training using educational materials) or a control group (free play sessions). The results showed that each group improved in direct measures of social cognition. The experimental group was significantly better at the SIP task in post-test than the control group. Significant correlations were obtained between individual and family characteristics and direct measures. Furthermore, regression analyses showed that, after controlling for pre-test result, SIP measures in post-test were significantly predicted by pre-test results and group condition. This study could help professionals and parents by providing them with some basis for early training exercises that can induce an improvement in SIP competences in preschoolers.

Children's spontaneous focusing on Arabic number symbols (SFONS) has been identified as a relevant component of their early mathematical development. This study investigated whether SFONS is a separate construct from spontaneous focusing on numerosity (SFON) and examined whether it is uniquely related to numerical abilities and mathematics achievement. Participants were 159 kindergartners (4-5-year-olds) who completed measures of SFONS, SFON, numerical abilities, mathematics achievement, spatial ability, and language ability. Confirmatory factor analysis revealed that a two-factor model representing a separate SFONS and SFON factor best fitted the data, indicating that SFONS is separate from SFON. Correlation and regression analyses showed that SFONS was associated with numerical abilities and mathematics achievement. These associations -- except for verbal counting -- remained after controlling for age, parental education, spatial ability, language ability, and SFON. These findings suggest that SFONS is a unique component of early mathematical development that deserves attention in early mathematics education.

Studies comparing mathematical abilities of children with autism spectrum disorder (ASD) and typically developing children are hitherto scarce, inconclusive, and mainly focusing on elementary school children or adolescents. The present study wants to gain insight into the foundation of mathematics by looking at preschool performances. Five early numerical competencies known to be important for mathematical development were examined: verbal subitizing, counting, magnitude comparison, estimation, and arithmetic operations. These competencies were studied in 20 high-functioning children with ASD and 20 age-matched control children aged 4 and 5 years. Our data revealed similar early number processing in children with and without ASD at preschool age, meaning that both groups did not differ on the foundation of mathematics development. Given the pervasiveness and the family impact of the condition of ASD, this is an important positive message for parents and preschool teachers. Implications and several directions for future research are proposed.

Background: Children with 22q11.2 deletion syndrome (22q11.2DS) are reported to have socio-communicative impairments. Although many of these children are diagnosed with intellectual disability (ID) and/or autism spectrum disorder (ASD), these populations are seldom used as control groups. Hence, information regarding syndrome-specific socio-communicative challenges is lacking. Method: Parental concerns regarding everyday communication were investigated by means of the Children's Communication Checklist-2-NL (Geurts, 2007). Twenty children with 22q11.2DS (chronological age: 6 years-13 years 3 months) were compared to 21 children with idiopathic ID and 23 children with idiopathic ID and comorbid ASD. All groups were matched for fluid intelligence ("Gf"), chronological age, and core language scores. Results: Neglect or inadequate use of context information was more prevalent in children with 22q11.2DS than in children with idiopathic ID. Nonverbal communication seemed less impaired than in children with idiopathic ID + ASD. Conclusion: Pragmatic language skills and developmental trajectories in children with 22q11.2DS merit further investigation.

Research Findings: To date, studies comparing the mathematical abilities of children with autism spectrum disorder (ASD) and typically developing children are scarce, and results remain inconclusive. In general, studies on this topic focus on mathematical abilities learned from elementary school onward, with little attention for possible precursors at younger ages. The current exploratory study focused on the important developmental period of preschool age, investigating 5 early numerical competencies in 30 high-functioning children with ASD and 30 age-matched control children: verbal subitizing, counting, magnitude comparison, estimation, and arithmetic operations. Children were examined at 5 or 6 years of age, attending the 3rd and final year of preschool. Overall, rather similar early number processing was found in children with and without ASD, although marginally significant results indicated a weaker performance of children with ASD on verbal subitizing and conceptual counting. Practice or Policy: Given the pervasiveness and impact of ASD on other domains of functioning, it is important to know that no general deficits in early numerical competencies were found in this study. However, some downward trends in mathematics performance were identified in children with ASD, which can serve as the basis for additional research in this field.

Aggressive behaviours in adolescence often originate in early development. This study tested three longitudinal pathways starting in early childhood, in a sample of 325 Belgian participants (162 girls) assessed every 1 or 2 years from birth through age 14. Structural equation models supported the "mother early dissatisfaction" pathway toward adolescent aggression, but neither the "cognitive functioning" nor the "early aggressive behaviour" pathway gained clear support. Mother's early dissatisfaction with her child was the starting point of a series of negative perceptions of the child, which predicted physical and social aggression in adolescence. Children's cognitive functioning and early aggression level were weakly correlated with mother's perceptions. This finding suggests that explaining normative development to parents may improve mothers' perceptions of their early experience as a mother, of their child, and of their subsequent interactions, which may reduce their child's future aggressive behaviours. (Contains 2 figures and 2 tables.)

This study explores reciprocal relations between children's attachment representations and their cognitive ability. Previous literature has mainly focused on the prediction of cognitive abilities from attachment, rarely on the reverse prediction. This was explored in the current research. Attachment representations were assessed with the Attachment Story Completion Task (Bretherton, Ridgeway, & Cassidy, 1990); the IQ was measured with the WPPSI-III (Wechsler, 2004). Data were collected twice, at a two-year interval, from about 400 preschoolers. Reasoning IQ was found to influence the development of secure attachment representations, while attachment security and disorganization influenced later verbal IQ. The implications of the findings for both clinical and research purposes are discussed in the light of the interactions between cognitive abilities and attachment representations. (Contains 3 tables and 1 figure.)