hi there

not sure if i can help you... my mum was the expert at control crying as she had 8 babies... but it didn't work for me... i still woke up at 2am every night up to about 3years old for a bottle LOL.

Even though she used the control crying technique on me, my personality was different and i probably continued to cry as i am an emotional person unlike my siblings. Saying this... I, nor my siblings seemed to have much problems ourselves with using this technique on our kids. I am actually the queen to tuning out a babies crying... it simply doesn't bother me. This however, could be a result of my learnings in areas of personal development and psychology at uni where i've hopefully gained at least a slightly better understanding of people (i'm certainly not judgemental of anything).

If you want to search studies, u should find a friend who is at uni and use their password to search their academic journals.. or try just a google search for academic journals in this area. Studies are published in academic journals normally.

I hope this has helped in some way, if not.. hopefully i have humoured you!