Generating nonsymbolic number stimuli

Symbolic and Nonsymbolic Pathways of Number Processing

Recent years have witnessed an enormous increase in behavioral and neuroimaging studies of numerical cognition. Particular interest has been devoted toward unraveling properties of the representational medium (mental number line) on which numbers are thought to be represented. We have argued that a correct inference concerning these properties requires distinguishing between different input mod...

Continuous visual properties explain neural responses to nonsymbolic number.

Nonsymbolic number and its continuous visual properties are confounded in everyday life: When number changes, its continuous visual properties also change. It could therefore be efficient to rely on the visual properties to judge number. The current consensus, however, holds that number is processed independent of its visual properties. In this study, we pitched these two opposing theories agai...

Preschool children's mapping of number words to nonsymbolic numerosities.

Five-year-old children categorized as skilled versus unskilled counters were given verbal estimation and number word comprehension tasks with numerosities 20-120. Skilled counters showed a linear relation between number words and nonsymbolic numerosities. Unskilled counters showed the same linear relation for smaller numbers to which they could count, but not for larger number words. Further ta...

Moving along the number line: operational momentum in nonsymbolic arithmetic.

Can human adults perform arithmetic operations with large approximate numbers, and what effect, if any, does an internal spatial-numerical representation of numerical magnitude have on their responses? We conducted a psychophysical study in which subjects viewed several hundred short videos of sets of objects being added or subtracted from one another and judged whether the final numerosity was...

Mapping Among Number Words, Numerals, and Nonsymbolic Quantities in Preschoolers