What does the saying "use it or lose it" relate to in child development?

The saying "use it or lose it" is closely tied to the concept of brain development, particularly in the context of synaptic pruning, which occurs during early childhood. This process refers to the brain's ability to strengthen and preserve neural connections that are actively used while eliminating those that are not. Essentially, when children engage in demanding cognitive activities and experiences, such as problem-solving, playing, and social interactions, they are actively using specific neural pathways. This active usage encourages the brain to reinforce those connections, enhancing overall cognitive functioning.

If certain skills or cognitive abilities are not practiced, the connections associated with those skills may weaken or be pruned away. Therefore, consistent engagement and stimulation during critical developmental periods are crucial. This principle underscores the importance of providing children with opportunities for exploration and learning, as it directly impacts their brain development and future learning capacity.