There are a great many five-and six-year-old children all over the world who can correctly multiply and divide five- and six- digit numbers in seconds. Shichida believes that this is an application of the right brain's fast calculation and imaging mechanisms.
世界各地都有許多五、六歲的小孩能在二三秒內算出五六位數字乘除法正確答案的心算神童，七田真認為那便是右腦高速自動處理機能和圖象化機能的作用。