Growth & Development
Review Erikson's psychosocial stages, Piaget's cognitive theory, and key developmental milestones by age group.
Growth and Development
Understanding human growth and development is essential for nursing practice and a high-yield topic on the NCLEX. Nurses must recognize normal developmental milestones, identify delays, and provide age-appropriate care and anticipatory guidance. Two foundational theories -- Erikson's psychosocial development and Piaget's cognitive development -- form the basis of most NCLEX questions on this topic.
Erikson's Eight Psychosocial Stages
Erik Erikson proposed that personality develops through eight stages across the lifespan. Each stage presents a developmental crisis that must be resolved to acquire the associated virtue.
| Stage | Age | Crisis | Virtue |
|---|---|---|---|
| 1 | Infancy (0-18 months) | Trust vs. Mistrust | Hope |
| 2 | Toddler (18 months-3 years) | Autonomy vs. Shame and Doubt | Will |
| 3 | Preschool (3-6 years) | Initiative vs. Guilt | Purpose |
| 4 | School-Age (6-12 years) | Industry vs. Inferiority | Competence |
| 5 | Adolescence (12-18 years) | Identity vs. Role Confusion | Fidelity |
| 6 | Young Adult (18-40 years) | Intimacy vs. Isolation | Love |
| 7 | Middle Adult (40-65 years) | Generativity vs. Stagnation | Care |
| 8 | Late Adult (65+ years) | Integrity vs. Despair | Wisdom |
Key nursing considerations: A hospitalized toddler who regresses to bottle-feeding is demonstrating a threat to autonomy. A school-age child who cannot participate in activities may develop feelings of inferiority. An adolescent needs privacy and peer interaction to develop identity.
Piaget's Four Stages of Cognitive Development
Jean Piaget described how children construct an understanding of the world through four stages of cognitive development.
- Sensorimotor (0-2 years): Learning through senses and motor actions. Object permanence develops around 8-9 months. The child learns that objects continue to exist even when out of sight.
- Preoperational (2-7 years): Symbolic thinking develops, but reasoning is egocentric and intuitive. The child engages in magical thinking, animism (believing inanimate objects are alive), and cannot understand conservation (that quantity remains the same despite changes in shape).
- Concrete Operational (7-11 years): Logical thinking about concrete events. The child understands conservation, classification, and reversibility. Can see things from another's perspective.
- Formal Operational (11+ years): Abstract and hypothetical thinking. The adolescent can reason about possibilities, develop hypotheses, and think about thinking (metacognition).
Developmental Milestones by Age Group
Infants (0-12 months)
- 2 months: Social smile, lifts head when prone, coos
- 4 months: Rolls front to back, grasps rattle, laughs
- 6 months: Sits with support, transfers objects hand to hand, babbles
- 9 months: Sits unsupported, pincer grasp developing, says "mama/dada" nonspecifically, stranger anxiety
- 12 months: Walks with assistance or independently, says 2-3 words, drinks from a cup
Play: Solitary play. Provide rattles, soft toys, mirrors, and textured objects. Avoid small objects that pose choking hazards.
Toddlers (1-3 years)
- 15 months: Walks independently, stacks 2 blocks, uses a spoon
- 18 months: Runs clumsily, vocabulary of 10+ words, points to body parts
- 24 months: Walks up and down stairs, 2-word phrases, parallel play
- 36 months: Rides a tricycle, uses sentences, knows first name, toilet training readiness
Play: Parallel play predominates. Push-pull toys, building blocks, coloring, and water play are appropriate. Toddlers are curious and mobile; safety measures include cabinet locks, outlet covers, and stair gates.
Preschoolers (3-6 years)
- Hops on one foot, catches a ball, dresses independently
- Vocabulary of 2,100+ words by age 5, asks "why" questions
- Associative play (playing with others without organized rules)
- Imaginary friends are normal; magical thinking persists
- Fears include the dark, monsters, and bodily harm
Nursing tip: When preparing a preschooler for a procedure, use simple explanations immediately before the event. Avoid words like "cut" or "shot" -- use "poke" or "opening." Allow the child to handle equipment when safe.
School-Age Children (6-12 years)
- Refines motor skills, enjoys organized sports and board games
- Cooperative play with rules; peer group becomes important
- Understands cause and effect, time, and conservation
- Can participate in self-care and understand explanations about illness
- Concerned about body integrity and modesty
Adolescents (12-18 years)
- Puberty and rapid physical growth (growth spurt)
- Abstract thinking, risk-taking behavior, sense of invincibility
- Peer group is the primary influence; identity formation is central
- Need for privacy, confidentiality, and autonomy in health decisions
- Screen for depression, substance use, eating disorders, and sexual health
Safety Considerations by Age
| Age Group | Leading Safety Risks | Key Interventions |
|---|---|---|
| Infant | Suffocation, falls, aspiration, SIDS | Back to sleep, no loose bedding, car seat rear-facing |
| Toddler | Drowning, poisoning, burns, falls | Constant supervision near water, lock medications, outlet covers |
| Preschooler | Drowning, motor vehicle injury, burns | Fence pools, booster seats, teach fire safety |
| School-Age | Bicycle injuries, sports injuries, drowning | Helmets, protective gear, swim lessons |
| Adolescent | Motor vehicle accidents, suicide, substance use | Seat belts, mental health screening, education |
NCLEX Focus: Growth and Development Questions
The NCLEX frequently tests developmental concepts in the context of nursing care. Common question formats include:
- Identifying an age-appropriate toy or activity for a hospitalized child
- Recognizing normal versus delayed milestones
- Selecting the correct nursing intervention based on the child's developmental stage
- Applying Erikson's stages to a clinical scenario (e.g., which action supports autonomy in a toddler)
- Determining appropriate teaching strategies based on Piaget's stage
Test-taking tip: When an NCLEX question asks about the "most appropriate" toy or activity, match the child's age to the developmental stage. An 8-month-old (sensorimotor) benefits from peek-a-boo (object permanence); a 4-year-old (preoperational) benefits from dress-up (imaginative play).
For a quick-reference summary, see our Growth and Development Cheat Sheet. Strengthen your recall with Health Promotion Flashcards, or review the full Health Promotion Study Guide.