Kalina Michalska, a developmental neuroscientist at the University of California, Riverside. She led a study to find out.

加州大学河滨分校的发展神经学家卡琳娜·米哈尔斯卡说到。她领导的一项研究希望找出答案。

The notes were designed by Robert Kalina of Austria and he developed an interesting solution to the problem.

纸币由奥地利人罗伯特·卡利纳设计，他提出一种解决此问题的有趣方法。