AUTHOR=Kaufmann Liane , Pixner Silvia , Goebel Silke TITLE=Finger Usage and Arithmetic in Adults with Math Difficulties: Evidence From a Case Report JOURNAL=Frontiers in Psychology VOLUME=2 YEAR=2011 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2011.00254 DOI=10.3389/fpsyg.2011.00254 ISSN=1664-1078