State Fragility Index (SF) — combines scores measuring two essential qualities of state performance: effectiveness and legitimacy; these two quality indices combine scores on distinct measures of the key performance dimensions of security, governance, economics, and social development. The latest version of the Fragility Matrix has established a baseline set of values for its eight component indicators in order to measure State Fragility in previous years and examine changes in each indicator over time (varying in the range from 0 to 23, where 0 is the lowest fragility, 23 – the highest fragility). (Quotation from "Global Report on Conflict, Governance and State Fragility 2008", Monty G. Marshall and Benjamin R. Cole, George Mason University)

Since 2009 this index is counted up as an arithmetical mean between political and economical instability of the country. Information about these indexes in The Global Competitiveness Report 2009-2010, World Economic Forum Forum