According to commonly taught developmental theory, which is a general characteristic of toddler (approximately 1–3 years) development?

Commonly taught developmental theory (such as Erikson's stages) describes the toddler period (approximately ages 1–3) as a time of developing autonomy — the child begins to assert independence, explore, and do things for themselves ('autonomy versus shame and doubt'). Abstract reasoning develops much later (adolescence), and career and retirement concerns belong to adulthood. Understanding general, age-appropriate developmental characteristics — at a high level — supports anticipatory guidance and health teaching for families. Recognizing broad developmental milestones by stage is a standard health-promotion/growth-and-development concept. (This reflects widely taught theory; verify specifics against current NCLEX prep materials.)