Differentiation hypotheses concern changes in the structural organization of cognitive abilities that depend on the level of general intelligence (ability differentiation) or age (developmental differentiation). Part 1 of this article presents a review of the literature on ability and developmental differentiation effects in children, revealing…

First-order and advanced theory of mind (ToM and AToM), and their structures and relations were investigated in 229 children aged 5-8 years. ToM was assessed using 6 tasks from the first-order ToM scale, while AToM was measured using an 18-item battery (higher-order false-belief understanding; strange stories; faux pas test; eyes test;…

Humans possess a tendency to rapidly and consistently make character evaluations from mere facial appearance. Recent work shows that this tendency emerges surprisingly early: children as young as 3-years-old provide adult-like assessments of others on character attributes such as "nice," "strong," and "smart" based…

It is difficult to get a good grasp of the topic of kindergarten entry assessment because there are such great differences in the purpose for the instruments, how they are constructed, and how the data is used. Even so, in many states and communities, there is cause for concern. Until the paradigm of education moves from a preoccupation with…

Head Start enhances school readiness during preschool, but effects diminish after children transition into kindergarten. Designed to promote sustained gains, the Research-based Developmentally Informed (REDI) Parent program (REDI-P) provided home visits before and after the kindergarten transition, giving parents evidence-based learning games,…

We studied developmental trends in 5 important reasoning tasks that are critical components of the operational definition of rational thinking. The tasks measured denominator neglect, belief bias, base rate sensitivity, resistance to framing, and the tendency toward otherside thinking. In addition to age, we examined 2 other individual difference…

The researchers studied humour among Chinese and Greek preschool children in relation to cognitive development. The sample included 55 Chinese children and 50 Greek children ages 4½ to 5½ years. Results showed that both Chinese and Greek children's humour recognition were significantly and positively correlated to their cognitive development, but…

Children's thinking follows natural developmental paths in learning math. When teachers understand those paths and offer activities based on children's progress along them, they build developmentally appropriate math environments. The authors explain math learning trajectories and why teaching math using the trajectories approach is effective. A…

A longitudinal study tested the hypothesis that rapid cognitive improvement adversely affects young children's long-term memories encoded prior to cognitive transition. Seventy-one Year One (five- to six-year-old) children were assessed for recall for event and educationally-relevant information and cognitive ability (in operational reasoning) at…