Cognitive
No concept of past or future
Birth to 6 Months
10 to 15 years
Has knowledge of preferences of authority figures
18 to 36 months
Females develop physically sooner than males
10 to 15 years
Clenches and grips hands reflexively
Birth to 6 months
Uses formal logic, debates and can change sides
16 to 21 Years
Critical stage in which trust must reinforced to foster intimacy and attachment
Birth to 6 months
Begins to select and identify with role models
10 to 15 years
Begins to understand and imitate cultural norms of gender roles and basics of sexual relationships
18 to 36 months
Walks unaided
12 to 18 months
450 Word Vocabulary
18 to 36 months
Engages in cooperative play with other children involving group decisions, role assignments, fair play, etc.
6 to 9 years
Self esteem dependent on authority figures' approval
3 to 5 years
Gender identity established
3 to 5 years
Rolls over
6 to 12 months
Distinguishes right from left
6 to 9 years
Experiences separation anxiety when apart from primary caregiver
6 to 12 months
Begins to understand cultural norms of right and wrong
6 to 9 years
Development of more serious romantic relationships
16 to 21 years
Uses scissors effectively
3 to 5 years
Objects can be held in memory
6 to 12 months
Shares toys and can take turns with assistance
18 to 36 months
Limit testing increases, experimentation with moral standards
16 to 21 years
Begins to absorb cultural perceptions of gender and sexuality
6 to 12 months
Ties shoes independently
6 to 9 years