@article{Newman2014, title = {The impact of finger counting habits on arithmetic in adults and children.}, volume = {78}, issn = {1430-2772}, url = {http://www.ncbi.nlm.nih.gov/pubmed/23907537}, doi = {10.1007/s00426-013-0505-9}, abstract = {Here, we explored the impact of finger counting habits on arithmetic in both adults and children. Two groups of participants were examined, those that begin counting with their left hand (left-starters) and those that begin counting with their right hand (right-starters). For the adults, performance on an addition task in which participants added 2 two-digit numbers was compared. The results revealed that left-starters were slower than right-starters when adding and they had lower forward and backward digit-span scores. The children (aged 5-12) showed similar results on a single-digit timed addition task-right-starters outperformed left-starters. However, the children did not reveal differences in working memory or verbal and non-verbal intelligence as a function of finger counting habit. We argue that the motor act of finger counting influences how number is represented and suggest that left-starters may have a more bilateral representation that accounts for the slower processing.}, number = {4}, urldate = {2014-06-25}, journal = {Psychological research}, author = {Newman, SD and Soylu, F}, month = jul, year = {2014}, pmid = {23907537}, pages = {549--56}, file = {PDF:/home/fsoylu/Zotero/storage/4QRMLX8J/Newman, Soylu_2014_The impact of finger counting habits on arithmetic in adults and children.pdf:application/pdf}, }