'''Purchasing Power Parity''' (or '''PPP''') refers to differences in [[price]] levels among countries, as opposed to [[Gross National Product]], which supposedly measures total [[economic]] output.<ref>Almond, Gabriel A. ''Comparative Politics Today: A World View''. New York: Pearson, 2004.</ref> For example, the Big Mac Index is said to measure the amount of time in [[labor]] in various cities throughout the world to purchase one [[MacDonald's]] Big Mac.
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'''Purchasing Power Parity''' (or '''PPP''') refers to differences in [[price]] levels among countries, as opposed to [[Gross National Product]], which supposedly measures total [[economic]] output.<ref>Almond, Gabriel A. ''Comparative Politics Today: A World View''. New York: Pearson, 2004.</ref> For example, the Big Mac Index is said to measure the amount of time in [[labor]] in various cities throughout the world to purchase one [[McDonald's]] Big Mac.