The moment the baby masters a new mental skill (e.g., perceiving patterns, categories, or relationships). The Sunny Phase:
The book " Čudesni tjedni " (originally The Wonder Weeks by Frans Plooij and Hetty van de Rijt) describes the predictable developmental leaps in an infant's cognitive growth during the first 20 months. You can find a free preview or digital dairy version in PDF format through retailers like Egmont or on document-sharing platforms like Scribd . Key Concepts of the Developmental Leaps cudesni tjedni pdf