terrible Two's

FOR KIM WOODS ONLY

Most researchers explain that the rise of the terrible 2's occurs at a time when the kids are starting to learn their independence and what the word 'no' means.  On one hand, you want to let them explore that so they can develop a sense of self and autonomy. But, on the other, you have to have boundaries and rules. Find research to suggest where this fine line is?  [300 words, 2 references, 2 Intext Citations and Original Writing Only]