1.1 Piaget
Jean Piaget was a Swiss psychologist who was interested in how children’s thinking and understanding develop. He undertook observations and set up a range of tasks for children to undertake, and his findings showed that children’s thinking and understanding develop in a series of stages that could be loosely related to their age. The period from birth until around the age of 2 is known as the ‘sensorimotor’ stage, and one of the key features of this period is the development of object permanence. The video below explains what this means.
Activity 1 Development of object permanence
Watch this Open University video which explains development of object permanence.

Transcript: Video 1
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The concept of object permanence shows us why babies are so fascinated by playing peek-a-boo: they are surprised and excited to see the face or object again because it appears new to them. In order to understand that objects continue to exist even when they are unseen, the baby must develop an idea of the object in their mind, and to do this they need to use their senses to play with them and explore them. By finding out what the object looks, feels, tastes, smells and sounds like the baby builds up a mental image of what it is. This then helps them to realise that the object still exists even when they can’t actually see it.
Once a baby has developed their sense of object permanence, they use this knowledge to develop their thinking by trying to match new experiences and information to their existing understanding, identifying the differences and using this information to create new understanding.
Piaget’s work focused on how the individual child develops their understanding, and he highlighted the importance of providing babies and children with a range of experiences in lots of different environments in order to support development. Practitioners can use Piaget’s work to inform what they do in the baby/toddler room by making sure they let the babies play and explore lots of different objects and toys. This will help them to develop their sense of object permanence and give them lots of opportunities to begin to create their understanding.
Piaget’s work also highlighted the importance of the environment in a child’s development, recognising that they learn by interacting with what’s around them. We can see this aspect of his work in the ‘effective environments’ focus in the Welsh Government’s A Curriculum for Funded Non-maintained Nursery Settings (2022, p. 13), which highlights the role played by the physical and emotional environments we create in motivating children to explore, think creatively and solve problems.