Unlock the mysteries of your baby's development with the The Wonder Weeks : A Stress-Free Guide to Your Baby's Behavior by Xaviera Plooij & Frans X. Plooij & Hetty van de Rijt - 10 Sep 2019. It unveils the "leaps" in brain development that shape your baby's growth during the first 20 months, helping you understand their changing moods and behaviours. This book includes science-based insights, fun games for brain development, and practical checklists for new parents. With expert advice on sleep and key milestones, you'll have everything you need to guide your baby through their developmental leaps. Order now! About the Authors: Xaviera Plooij, Frans X. Plooij PhD, and Hetty van de Rijt PhD are renowned experts in infant development, having worked extensively with parents and researchers to provide evidence-based advice on child growth.