Human rights, political freedom, transparency and accountability have deteriorated in four African "powerhouses" over the past six years, according to the 2012 Ibrahim Index of African Governance, published on Monday.
Nigeria, South Africa, Kenya and Egypt dropped in the rankings in two of the four categories used in the index to assess good governance across the continent – safety and rule of law, and participation and human rights. The other two categories are sustainable economic opportunity and human development.
Nigeria was singled out as the worst performer of the four, dropping into the bottom 10 countries in the overall rankings for the first time. The country was ranked 14th out of the 16 countries in west Africa and 43rd out of the 52 countries listed overall. Nigeria was 41st last year and 37th in 2006.