Mark Hammer

Though I was already familiar with work in the field, my wife got me Dan Kahneman's recent book "Thinking Fast and Slow" for an anniversary gift, which covers much of the same ground.

I might also recommend folks looking into "self-determination theory", which has captivated motivational and social psychology of late. Not only does chief proponent Ed Deci have a website for it, with lots of useful reading material - http://www.selfdeterminationtheory.org/ - but there is an upcoming (June 27-30) conference in Rochester on SDT, with full-day workshops on business and health applications of SDT - http://www.sdtconference.org/