Harvard Business Review December 2015 issue is a special issue on negotiation
Emotion and the Art of Negotiation by Alison Wood Brooks is an interesting article.
You have to express the right emotions at the right times during negotiations.
Just as you prepare your tactical and strategic moves before a negotiation, you should invest effort in preparing your emotional approach. It will be time well spent.
The Bad Habits of Good Negotiators06/04/2013, Updated Aug 04, 2013
Wharton professor and author of GIVE AND TAKE and ORIGINALS
Negotiation Advantage: Make the First Movehttp://executiveeducation.wharton.upenn.edu/~/media/wee/wharton%20at%20work/nano%20tools%20pdfs/1209%20negotiating%20advantage.pdf
Updated 4 December 2016, 8 December 2015