Robin Elise Weiss, LCCE, is a mother of seven children and author of The About.com Guide to Having a Baby, Guarantee the Sex of Your Baby, The About.com Guide to Baby Care, The Everything New Mother's First Year, The EverythingPregnancy Fitness Book, and The Everything Getting Pregnant Book. She has lectured on pregnancy, childbirth, parenting, and related topics to doctors, midwives, nurses, childbirth educators, doulas (professional pregnancy/labor coaches). She has written for numerous publications including Newsweek, Working Mother, the New York Times, Yahoo Internet Life, and American Baby. She lives in Kentucky.

Technical Reviewer: Mary E. Muscari, Ph.D., R.N., is a specialist in child health, mental health, and forensics. She has more than thirty years of experience working with children and teens. She has written or coauthored more than 100 publications, including Not My Kid: 21 Steps to Raising a Nonviolent Child, Not My Kid 2: Protecting Your Children from the 21 Threats of the 21st Century, and Let Kids be Kids: Rescuing Childhood. She lives in Hawley, PA.