Website supporting The Wonder Weeks: How to stimulate your babyÂ’s mental development and help him turn his 10 predictable, great, fussy phases into magical leaps forward, by Hetty van de Rijt-Plooij and Frans Plooij.
This book shows how and when the levels of perception outlined by Hierarchical PCT develop in human infants. The English edition enjoys excellent reviews, saying that the predictions about the timing and nature of infant mental development in the first 20 months are right on.