non-physical areas of development in a child

If you were given the task to defend why a particular child had moved solidly into adolescence, what would be the 3 most important non-physical areas of development you would examine to make the decision (i.e., some specific cognitive or psychosocial characteristic/skill)? In addition, describe how you would expect an adolescent to function differently in each of these 3 characteristics/skills you have selected.

You can provide this in basics just to give me ideas