Abstract numbers: Culture or innate core knowledge?
"Do abstract numerical concepts depend on language or culture, or do they form a part of humans' innate, core knowledge?" ask Véronique Izard, Coralie Sann, Elizabeth Spelke and Arlette Streri in "Newborn infants perceive abstract numbers" (PNAS June 23, 2009 vol. 106 no. 25 10382-10385).
Abstr...