Introduction to Child Development
Meaning and scope
Child development studies change and stability from conception through adolescence. Growth is quantitative (height, weight); development is qualitative (a new skill or organisation). Development is multidimensional: physical, cognitive, language, social, emotional and moral domains interact. The exam tests definitions, principles, stage boundaries and your ability to apply them to a child's behaviour.
Principles you must apply
- Development is sequential and predictable: skills appear in an order, not at identical ages.
- Cephalocaudal: head-to-tail direction (head control before walking).
- Proximodistal: centre-outward (shoulder control before finger grasp).
- Development proceeds from general to specific.
- Individual differences exist in rate and timing; heredity and environment interact.
Stages
Prenatal, infancy, early childhood, middle childhood, adolescence. Learn approximate age bands, but do not treat them as fixed cut-offs. Principles are probabilistic, not rigid laws.
Worked example
A question says a 5-month-old can lift her head and chest when prone but cannot sit unsupported, and asks which principle explains this. Reasoning: head control precedes trunk control, so the sequence is head-to-trunk-to-legs; that is cephalocaudal direction. The fact she cannot sit yet is not a delay by itself because the order, not the exact month, is what the principle predicts.
Traps
Do not call growth a principle of development; do not confuse proximodistal with cephalocaudal; do not claim all children reach a milestone at the same age; do not use development stops at adolescence as a rule, because development continues beyond childhood.