Begins at birth, focuses on senses, motor skills, object permanence, and exploration of surroundings.
Understanding objects exist even when not seen; emerges during sensorimotor stage development.
Ages 2 to 7, rapid language development, symbolic play, egocentrism, and intuitive thinking emerge.
Child’s difficulty in understanding perspectives other than their own; common in preoperational stage.
Ages 7 to 11, concrete logical thinking, understanding conservation, and basic mathematical concepts.
Recognition that quantity remains same despite changes in shape or container; key developmental milestone.
Begins at age 11, abstract thinking, hypothetical reasoning, problem-solving, and understanding moral concepts.
Heightened self-consciousness, belief in uniqueness, imaginary audience, and personal fable during adolescence.
Ability to form hypotheses and test them systematically to arrive at a solution or conclusion.