JoAnn Deak, Ph.D., is an author and an international speaker, educator, and preventive psychologist. She also works with parents, teachers, and other adults who work with children as a consultant to schools worldwide on issues of brain development and gender equality. She is also the author of the award-winning book, Your Fantastic Elastic Brain.

Terrence Deak, Ph.D. is a Professor of Psychology and Behavioral Neuroscience at Binghamton University in upstate New York, where he runs a highly active neuroscience laboratory. Dr. Deak and his wife, Molly, have 3 inquisitive boys (Wyatt, Owen, and Oscar) who are extremely interested in how their brains work, just like you. Together, they enjoy a plethora of outdoor activities, travel, and learning something new every day.

Freya Harrison began drawing as soon as she could hold a pencil (so her mum says). Since then she's graduated with a BA in Graphic and Media Design from University of the Arts, London and has been doodling pictures for books, magazines, festivals, and brands ever since. She works and lives in London amongst a small mountain of comics, records, and sharpies. Find Freya's work on the web at www.freyaillustration.co.uk.