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Individual differences in non-verbal number acuity correlate with maths achievement
Human mathematical competence emerges from two representational systems. Competence in some domains of mathematics, such as calculus, relies on symbolic representations that are unique to humans who… Expand
Developmental change in the acuity of the "Number Sense": The Approximate Number System in 3-, 4-, 5-, and 6-year-olds and adults.
Behavioral, neuropsychological, and brain imaging research points to a dedicated system for processing number that is shared across development and across species. This foundational Approximate… Expand
Core systems of number
What representations underlie the ability to think and reason about number? Whereas certain numerical concepts, such as the real numbers, are only ever represented by a subset of human adults, other… Expand
The Representations Underlying Infants' Choice of More: Object Files Versus Analog Magnitudes
A new choice task was used to explore infants' spontaneous representations of more and less. Ten- and 12-month-old infants saw crackers placed sequentially into two containers, then were allowed to… Expand
Impaired acuity of the approximate number system underlies mathematical learning disability (dyscalculia).
Many children have significant mathematical learning disabilities (MLD, or dyscalculia) despite adequate schooling. The current study hypothesizes that MLD partly results from a deficiency in the… Expand
Tracking individuals via object-files: evidence from infants' manual search
In two experiments, a manual search task explored 12- to 14-month-old infants’ representations of small sets of objects. In this paradigm, patterns of searching revealed the number of objects infants… Expand
Preschool acuity of the approximate number system correlates with school math ability.
- Melissa E. Libertus, Lisa Feigenson, J. Halberda
- Medicine, Psychology
- Developmental science
- 1 November 2011
Previous research shows a correlation between individual differences in people's school math abilities and the accuracy with which they rapidly and nonverbally approximate how many items are in a… Expand
On the limits of infants' quantification of small object arrays
Recent work suggests that infants rely on mechanisms of object-based attention and short-term memory to represent small numbers of objects. Such work shows that infants discriminate arrays containing… Expand
Preschoolers' Precision of the Approximate Number System Predicts Later School Mathematics Performance
The Approximate Number System (ANS) is a primitive mental system of nonverbal representations that supports an intuitive sense of number in human adults, children, infants, and other animal species.… Expand
Multiple Spatially Overlapping Sets Can Be Enumerated in Parallel
A system for nonverbally representing the approximate number of items in visual and auditory arrays has been documented in multiple species, including humans. Although many aspects of this… Expand