-
Conception
Birth of the child
(2001 being start, 2012 10yo) -
Sitting up without support
6 months
(2001 being start, 2012 10yo) -
Object Permanence
9 months -
Walking
15 months -
Utilizes cup and most silverware, imitation of parent regarding household work
15 months -
Understanding of name, overall social skills, "no"
24 months, 2 yo -
Toilet Training
24 to 36 months (2004-2005) -
Conservation recognized, exiting Preoperational
2007-2008, 4 to 5yo -
Period: to
Concrete Operational Stage (only to 10, although goes past this age)
Development of logical thinking, able to solve complex geometric and algebraic problems, dissolvement of egocentrism and understands conservation.