Hetty van de Rijt

The late Hetty van de Rijt, PhD, studied infant development at the University of Amsterdam from 1986 to 1990, observing babies in their home environment.


NAPPA (National Parent Product Award), 2017

Books by Hetty van de Rijt

  • 9781682684276 72

    The Wonder Weeks: A Stress-Free Guide to Your Baby's Behavior

    Xaviera Plas-Plooij, Frans X. Plooij, Hetty van de Rijt

    6th Edition, Paperback, 2019

    With nearly four million downloads, The Wonder Weeks app is a must-have for every new parent. The revised and updated book, with exclusive material, is the perfect companion or gift.