1. Summarize the three principles that govern physical and motor development in infancy.

2. Describe the primary characteristics of brain development in infancy and early childhood.  

3. Summarize what research on the nature/nurture question demonstrates as it applies to language acquisition in infancy and early childhood.

4. It cannot be concluded that differences in the quality of infant care are the direct and primary cause of differences in attachment quality, and differences in later socio emotional development. Why not?