Most children walk by one year, whatever the training. This shows:

1. Most children sit without support by 7 months, stand with support by 8 months and walk by one year. 2. Once the physical structure is ready, these behaviours need little practice. 3. This timetable unfolds from within, so it shows maturation. _Source: NCERT Class XI Psychology, Ch 3 Human Development, "Growth, Development, Maturation, and Evolution", p. 42_