The 2015 Global Emotions survey from Gallup finds that, “Iraqis Are Among the Saddest and One of the Angriest Populations in the World.” They explain:
“Iraq’s high Negative Experience Index score is largely attributable to the relatively high percentages of Iraqis who report experiencing each of these negative emotions. Majorities of Iraqis experienced worry (62%), physical pain (57%), sadness (57%) and stress (55%) the previous day, and half of Iraqis (50%) said they experienced anger. Iraqis lead the world in experiencing sadness and tie with Iran on anger (49%).”
This Gallup survey covered 1,000 adults in each of 148 countries during 2014.