Yohana Elizabeth Hardjadinata graduated from Maria Montessori Institute in 2004. She has a Bachelor Degree from the University in Jakarta in 2010 and then continued with a Master of Early Childhood in Jakarta in 2012. Yohana is a highly resourceful person participating in many activities, such as workshops, seminars, television programs and radio talk shows. She is an Author and has published in 9 books relating to early childhood, clinical ( ADHD ) and parenting in Indonesia. She is also the source for tabloid Nakita as well as several other parenting magazines .