The book 'Not All in the Mind'[1], published in 1976, is definitely worth a read. It's been a while since I picked it up and my copy is in another state while I'm away from work, but I remember it being very pertinent to this conversation. (I'd write more about, but it's 01:00 where I am and I'm falling asleep at the keyboard).

1. http://www.amazon.com/Not-All-Mind-Richard-Mackarness/dp/033...