Tracy Packiam Alloway, PhD is a Psychology professor and Graduate Program Director at the University of North Florida. She specializes in working memory and its role in learning from kindergarten to high school, and the benefits of training working memory. As well as having written several books on the subject, Dr Alloway's work has been featured on Good Morning America, the Today Show, The Washington Post, and many others. She blogs for Psychology Today and the Huffington Post.

Ana Sanfelippo studied graphic design at the University of Buenos Aires, specializing in typography. She uses acrylics and inks in her illustrations, and creates artwork for patterns, products, books, and magazines. She also lectures at the University of Buenos Aires.