Answer: In psychology, this means the way children learn.
Explanation: Cognitive development in psychology applied to children makes mention of how they learn. Within these processes, there are a series of events that occur for the child to learn. One of the most mentioned psychological theories of learning is the zone of proximal development, which talks about the level of effective development of the child and her level of potential development.
Within cognitive psychology, language is seen as fundamental to mental development. According to Vygotsky, this is a fundamental cultural tool that allows to think logically and learn new behaviors.