What is the term for an understanding about the processes that underlie memory, which emerges and improves during middle childhood?

Metamemory

Explanation:

Metamemory is the judgement or knowledge of a person about his/her memory. It applies to the monitoring and control of a person over his own memory. Metamemory improves during middle childhood because children start understanding the idea of memory in better and enlightened way and gradually they start understanding what memory is and understand the strategies to improve it. This understanding and awareness about their own memory processes has significant consequences on how people learn, control and use memories.