The Philippines is the world’s most emotional country. It’s not even close; the heavily Catholic, Southeast Asian nation, a former colony of Spain and the U.S., scores well above second-ranked El Salvador.
Post-Soviet countries are consistently among the most stoic. Other than Singapore (and, for some reason, Madagascar and Nepal), the least emotional countries in the world are all former members of the Soviet Union. They are also the greatest consumers of cigarettes and alcohol. This could be what you call and chicken-or-egg problem: if the two trends are related, which one came first? Europe appears almost like a gradient here, with emotions increasing as you move West.
People in the Americas are just exuberant. Every nation on the North and South American continents ranked highly on the survey. Americans and Canadians are both among the 15 most emotional countries in the world, as well as ten Latin countries. The only non-American countries in the top 15, other than the Philippines, are the Arab nations of Oman and Bahrain, both of which rank very highly.