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Yousif, Sami R.; Alexandrov, Emma; Bennette, Elizabeth; Aslin, Richard N.; Keil, Frank C. – Developmental Science, 2022
A large and growing body of work has documented robust illusions of area perception in adults. To date, however, there has been surprisingly little in-depth investigation into children's area perception, despite the importance of this topic to the study of quantity perception more broadly (and to the many studies that have been devoted to studying…
Descriptors: Computation, Decision Making, Task Analysis, Heuristics
Odic, Darko – Developmental Science, 2018
Young children can quickly and intuitively represent the number of objects in a visual scene through the Approximate Number System (ANS). The precision of the ANS--indexed as the most difficult ratio of two numbers that children can reliably discriminate--is well known to improve with development: whereas infants require relatively large ratios to…
Descriptors: Correlation, Mathematics, Number Concepts, Comparative Analysis
Braithwaite, David W.; Siegler, Robert S. – Developmental Science, 2018
Many students' knowledge of fractions is adversely affected by whole number bias, the tendency to focus on the separate whole number components (numerator and denominator) of a fraction rather than on the fraction's magnitude (ratio of numerator to denominator). Although whole number bias appears early in the fraction learning process and under…
Descriptors: Numbers, Bias, Fractions, Age Differences
Lourenco, Stella F.; Bonny, Justin W. – Developmental Science, 2017
A growing body of evidence suggests that non-symbolic representations of number, which humans share with nonhuman animals, are functionally related to uniquely human mathematical thought. Other research suggesting that numerical and non-numerical magnitudes not only share analog format but also form part of a general magnitude system raises…
Descriptors: Mathematics Skills, Skill Development, Correlation, Task Analysis
Goldman, Meghan C.; Negen, James; Sarnecka, Barbara W. – Developmental Science, 2014
Does speaking more than one language help a child perform better on certain types of cognitive tasks? One possibility is that bilingualism confers either specific or general cognitive advantages on tasks that require selective attention to one dimension over another (e.g. Bialystok, [Bialystok, E., 2001]; Hilchey & Klein, [Hilchey, M.D.,…
Descriptors: Bilingualism, Young Children, Monolingualism, Comparative Analysis
Rosenberg-Lee, Miriam; Ashkenazi, Sarit; Chen, Tianwen; Young, Christina B.; Geary, David C.; Menon, Vinod – Developmental Science, 2015
Developmental dyscalculia (DD) is marked by specific deficits in processing numerical and mathematical information despite normal intelligence (IQ) and reading ability. We examined how brain circuits used by young children with DD to solve simple addition and subtraction problems differ from those used by typically developing (TD) children who…
Descriptors: Developmental Disabilities, Learning Disabilities, Numbers, Mathematics Skills
Bugden, Stephanie; Ansari, Daniel – Developmental Science, 2016
In the present study we examined whether children with Developmental Dyscalculia (DD) exhibit a deficit in the so-called "Approximate Number System" (ANS). To do so, we examined a group of elementary school children who demonstrated persistent low math achievement over 4 years and compared them to typically developing (TD), aged-matched…
Descriptors: Learning Disabilities, Children, Spatial Ability, Short Term Memory
Libertus, Melissa E.; Feigenson, Lisa; Halberda, Justin; Landau, Barbara – Developmental Science, 2014
All numerate humans have access to two systems of number representation: an exact system that is argued to be based on language and that supports formal mathematics, and an Approximate Number System (ANS) that is present at birth and appears independent of language. Here we examine the interaction between these two systems by comparing the…
Descriptors: Congenital Impairments, Genetic Disorders, Mental Retardation, Number Systems
Mazzocco, Michele M. M.; Devlin, Kathleen T. – Developmental Science, 2008
Many middle-school students struggle with decimals and fractions, even if they do not have a mathematical learning disability (MLD). In the present longitudinal study, we examined whether children with MLD have weaker rational number knowledge than children whose difficulty with rational numbers occurs in the absence of MLD. We found that children…
Descriptors: Learning Disabilities, Numbers, Grade 8, Grade 6
Leroux, Gaelle; Spiess, Jeanne; Zago, Laure; Rossi, Sandrine; Lubin, Amelie; Turbelin, Marie-Renee; Mazoyer, Bernard; Tzourio-Mazoyer, Nathalie; Houde, Olivier; Joliot, Marc – Developmental Science, 2009
A current issue in developmental science is that greater continuity in cognition between children and adults may exist than is usually appreciated in Piaget-like (stages or "staircase") models. This phenomenon has been demonstrated at the behavioural level, but never at the brain level. Here we show with functional magnetic resonance imaging…
Descriptors: Young Adults, Cognitive Development, Diagnostic Tests, Science Education
Siegler, Robert S.; Ramani, Geetha B. – Developmental Science, 2008
The numerical knowledge of children from low-income backgrounds trails behind that of peers from middle-income backgrounds even before the children enter school. This gap may reflect differing prior experience with informal numerical activities, such as numerical board games. Experiment 1 indicated that the numerical magnitude knowledge of…
Descriptors: Games, Number Concepts, Low Income Groups, Educational Games