The symptoms of amphetamine-induced psychiatric disorders can be differentiated from those of related primary psychiatric disorders by time. If symptoms do not resolve within 2 weeks after the amphetamines are discontinued, a primary psychiatric disorder should be suspected.
Monetary policy is the process by which the monetary authority of a country controls the supply of money, often targeting an inflation rate or interest rate to ensure price stability and general trust in the currency.
1 Monetary policy involves influencing the supply and demand for money through interest rates and other monetary tools.  Monetary policy is usually conducted by the Central Bank, e.g. UK â Bank of England, US â Federal Reserve.