5 object permanence

Object permanence

The understanding that objects continue to exist even when they are out of sight.

Piaget's Sensorimotor Stage

The first stage in Piaget's theory of cognitive development, lasting from 0-24 months, where infants learn about the world through actions and sensory information.

Objects permanence attained at what age?

12 monts

Full internal representations of objects formed by what age?

18-24 months

Primary Circular Reactions

Simple behaviors derived from basic reflexes, focused on the body, occurring in Piaget's stages 1 and 2.

Secondary Circular Reactions

Intentional behaviors focused on objects and surroundings, occurring in Stage 3 of Piaget's sensorimotor development.

4-10 months

A-not-B error

A common error made by infants during Stage 4 of Piaget's theory, where they look for an object where it was previously found rather than where it was last hidden.

until 12 months

Tertiary Circular Reactions

Stage 5 in Piaget's theory where infants begin to discover the properties of objects and their environment through trial and error.

12-18 months

Internal Representation

Mental representations of the world that emerge in Stage 6 of Piaget's sensorimotor stage, allowing insight into problem-solving.

18-24 months

Critiques of Piaget

Concerns regarding Piaget's reliance on observational methods, lack of quantitative data, and potential confounding variables in his studies.

Baillargeon et al. (1985)

Study showing that infants as young as 5 months have an understanding of object permanence by observing their reactions to impossible events

previously thought to be 8-12 months by Piaget

Willatts (1989)

Research demonstrating that 9-month-old children can perform planned sequences of actions to retrieve a toy out of reach.

Clifton et al. (1991)

Study indicating that 6-month-old infants can use mental representations to appropriately grip objects based on sound cues.