I would encourage you to read criticism of this and Cordelia Fine's books, such as http://www.biomedcentral.com/content/pdf/2042-6410-2-4.pdf http://www.biomed

I would encourage you to read criticism of this and Cordelia Fine's books, such as http://www.biomedcentral.com/content/pdf/2042-6410-2-4.pdf http://www.biomedcentral.com/content/pdf/2042-6410-2-4.pdf It has been argued that these authors have picked evidence they find disagreeable but fail to mention more solid studies.