Investigations into the remarkable improvements on standardized tests were first reported by The Atlanta Journal-Constitution newspaper.

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The International Association of Athletics Federation ordered Ms Semenya to take the test after she made remarkable improvements in her performances in recent months.

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There have been remarkable improvements in life expectancy at 65, which rose in the case of men, for example, by almost three years in the 1980s and 1990s.

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"We have seen patients make remarkable improvements after being in a coma for a long time, but the best prognostic indicator is how one does over time, " Black said.

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Between 2002 and 2010, Colombia recovered its standing in the international community thanks to remarkable improvements in our domestic policy, not just in security matters, but also the rule of law, economic performance and social policy.

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"Really, it's quite remarkable in my opinion that we found these modest improvements, " he adds.

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