Sensorimotor Stage: The sensorimotor stage is a cognitive development stage proposed by Piaget that occurs from birth to two years old. During this stage, toddlers develop object permanence and explore the world using their senses.
Egocentrism: Egocentrism refers to a child's inability to see things from another person's perspective. It is commonly observed during early childhood.
Temperament: Temperament refers to a toddler's characteristic patterns of behavior, emotionality, and responsiveness that remain relatively stable over time.