One way in which economic growth is measured apart from GDP is in Purchasing Power Parity (PPP) terms. The Big Mac Index is the PPP concept applied to the cost of a Big Mac in different countries. This tongue-in-cheek application though is said to illustrate the comparative differences in the economic well-being of a country's population. Can you identify any other broad index or indices (apart from GDP) that are used to indicate the well-being of a country's population? What are these? And what are their source?