This video reviews the categories of aggregate expenditure (consumption, investment, government purchases, exports, imports) and shows how they fit together in order to count specifically the expenditure on an economy's production, or GDP. By Jodi Beggs - Economists Do It With Models http://www.economistsdoitwithmodels.com/ Facebook: http://www.facebook.com/economistsdoitwithmodels Twitter: http://www.twitter.com/jodiecongirl Tumblr: http://economistsdoitwithmodels.tumblr.com/