I'll look for some, but I haven't directly quoted any studies, just stated what the knowlege that time studying has provided. When you guys continually ask for references, you need to understand that I do not keep a copy of every single research article I read, and therefore, do not have citaiton information at my fingertips for all articles. Nor do I have a copy of every book I have read that has provided me with the information necessary to have the knowledge in certain areas. If I retained a copy of every single article and book, I would have to live in a library.
But, for you, RD, I will look for some articles that I can provide you citations for.