The article looks at whether the purchasing power parity (PPP) hypothesis holds true for 26 African countries from 1973 to 2008. They tested the real exchange rates of these countries and found that only 7 showed evidence in favor of PPP. Further tests revealed that the real exchange rates of all countries did not revert to their PPP levels, suggesting a breakdown of the PPP in these countries. The researchers suggest that a different type of analysis may be needed to understand how exchange rates adjust towards their PPP values, which could be helpful for making policies.