No "Normal" Brain: Neurodiversity

I have been reading the October 2012 edition of ASCD's publication Educational Leadership.  An article "First Discover Their Strengths" by Thomas Armstrong has intrigued me.  He recommends using the term neurodiversity for learners who struggle rather than deficit terms.  He also suggests ways to build on their strengths.  Armstrong says, "There is no 'typical' mental capacity--no 'normal' brain to which all other brains are compared."