Quality of life (QOL) is defined by the World Health Organization as "an individual's perception of their position in life in the context of the culture and value systems in which they live and in relation to their goals, expectations, standards and concerns".
A developed country, or high-income country, is a sovereign state that has a high quality of life, developed economy, and advanced technological infrastructure relative to other less industrialized nations. Most commonly, the criteria for evaluating the degree of economic development are the gross domestic product (GDP), gross national product (GNP), the per capita income, level of industrialization, amount of widespread infrastructure and general standard of living. Which criteria are to be used and which countries can be classified as being developed are subjects of debate. Different definitions of developed countries are provided by the International Monetary Fund and the World Bank; moreover, HDI ranking is used to reflect the composite index of life expectancy, education, and income per capita. Another commonly used measure of a developed country is the threshold of GDP (PPP) per capita of at least US$22,000. In 2023, 40 countries fit all four criteria, while an additional 15 countries fit three out of four.
The Human Development Index (HDI) is a statistical composite index of life expectancy, education, and per capita income indicators, which is used to rank countries into four tiers of human development. A country scores a higher level of HDI when the lifespan is higher, the education level is higher, and the gross national income GNI (PPP) per capita is higher. It was developed by Pakistani economist Mahbub ul-Haq and was further used to measure a country's development by the United Nations Development Programme (UNDP)'s Human Development Report Office.
The Human Poverty Index (HPI) was an indication of the poverty of community in a country, developed by the United Nations to complement the Human Development Index (HDI) and was first reported as part of the Human Development Report in 1997. It is developed by United Nations Development Program which also publishes indexes like HDI It was considered to better reflect the extent of deprivation in deprived countries compared to the HDI. In 2010, it was supplanted by the UN's Multidimensional Poverty Index.
The Human Development Report (HDR) is an annual Human Development Index report published by the Human Development Report Office of the United Nations Development Programme (UNDP).
Freedom in the World is a yearly survey and report by the U.S.-based non-governmental organization Freedom House that measures the degree of civil liberties and political rights in every nation and significant related and disputed territories around the world.
Global Peace Index (GPI) is a report produced by the Institute for Economics & Peace (IEP) which measures the relative position of nations' and regions' peacefulness. The GPI ranks 163 independent states and territories according to their levels of peacefulness. In the past decade, the GPI has presented trends of increased global violence and less peacefulness.
The Fragile States Index is an annual report mainly published and supported by the United States think tank the Fund for Peace. The FSI is also published by the American magazine Foreign Policy from 2005 to 2018, then by The New Humanitarian since 2019. The list aims to assess states' vulnerability to conflict or collapse, ranking all sovereign states with membership in the United Nations where there is enough data available for analysis. Taiwan, Northern Cyprus, Kosovo and Western Sahara are not ranked, despite being recognized as sovereign by one or more other nations. The Palestinian Territories were ranked together with Israel until 2021. Ranking is based on the sum of scores for 12 indicators. Each indicator is scored on a scale of 0 to 10, with 0 being the lowest intensity and 10 being the highest intensity, creating a scale spanning 0−120.
Measure of America is a non-partisan, non-profit initiative of the Social Science Research Council in Brooklyn, New York. It conducts research and analysis primarily on human development data from the United States at the national, state, and county levels.
