Child Development: Domains, Sequences and Influences
Core concepts
Development is best understood as change across interrelated domains: physical (gross and fine motor, brain and sensory growth), cognitive (attention, memory, language, problem solving), social and emotional (attachment, self-regulation, peer relations), and moral or prosocial development. Candidates must know that development follows general sequences (cephalocaudal head-to-toe, proximodistal centre-outward) while rates vary widely between children. Understand the nature–nurture interaction: heredity sets a range, environment shapes where a child sits in it. Key terms include milestones, developmental norms, sensitive periods, maturation, scaffolding (Vygotsky's zone of proximal development), and Piaget's stages of sensorimotor, preoperational, concrete operational and formal operational thinking. Also know attachment theory (secure base, separation anxiety) and the difference between growth (measurable size) and development (skill and function).
Traps in questions
Questions often swap growth for development, or present a milestone as a fixed deadline rather than a range. Watch for 'all children' statements: sequences are predictable, timing is not. Another trap is treating domains as separate when a question describes an integrated change (a toddler walking also shows confidence and language). Distinguish a delay from normal variation: a delay is persistent and outside the expected range across contexts.
Worked rule of thumb
When asked to analyse a scenario, name the domain, identify the milestone or skill, state the expected sequence, then separate what is typical variation from what signals concern. Example: a 20-month-old with few words but good comprehension and gesture is usually within variation; a 30-month-old with no words and no pointing warrants referral.
Exam skill
Use precise terminology and link observations to theory rather than listing milestones without interpretation.