Research topic for phd on early childhood education?

-current issues in early childhood education that could be researched for phd levelEffects of video game use on attention span on follow-on task, or expectation of easy success/ strength of will in resistance to temptation for denied object - conversely, effects of reading or playing simple board game with significant caregiver for same amount of time.



Or, effect of listening to judgemental rhetoric from teevee or other in room and subsequent play, as opposed to listening to Mr. Rogersesque rhetoric on their play.