We may all count on our fingers, but we are not all counting on them the same way. In a 2012 issue of Cognition, German researchers Andrea Bender and Sieghard Beller argue that the extent of cultural diversity in finger-counting has been hugely underestimated.
In this edition of Two Guys on Your Head, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy talk about the psychology of finger counting.