According to Piaget's theory of cognitive development, what is characteristic of the preoperational stage (ages 2-7)?

Jean PIAGET's theory describes four stages of cognitive development. The PREOPERATIONAL STAGE (approximately ages 2-7) is characterized by: EGOCENTRISM — the child cannot take another's perspective; believes others see, think, and feel exactly as they do; demonstrated by Piaget's 'three mountains' task; MAGICAL THINKING — animism (attributing life to inanimate objects), belief that thoughts can cause events; SYMBOLIC/LANGUAGE THINKING — beginning to use symbols (words, pictures) to represent objects; dramatic play; LACK OF CONSERVATION — does not understand that quantity stays the same when appearance changes (pouring water from a short, wide glass to a tall, narrow glass — child says the tall glass has 'more' water); CENTRATION — focuses on only one dimension at a time; IRREVERSIBILITY — cannot mentally reverse actions; TRANSDUCTIVE REASONING — reasoning from specific to specific (if A caused B once, A always causes B). Piaget's full stages: SENSORIMOTOR (birth to 2 years) — learns through senses and motor action; object permanence develops; PREOPERATIONAL (2-7 years) — symbolic thought, egocentrism; CONCRETE OPERATIONAL (7-11 years) — logical thinking with concrete materials, conservation, decentration, reversibility; FORMAL OPERATIONAL (12+ years) — abstract, hypothetical reasoning. NURSING APPLICATION: preoperational children may think their illness is punishment for bad thoughts (magical thinking); medical procedures should be explained simply and concretely; allow them to handle equipment when safe; don't assume they understand explanations aimed at adults; they may not report symptoms accurately because of egocentrism; school-age/concrete operational children benefit from logical explanations and hands-on demonstration.