- Control of Growth & Development. Hormones are chemical messengers produced by glands in the endocrine system. Endocrine tissues are specialised to produce such hormones, which have genes switched on according the the hormones they were designed to produce.
There are actually three rates in the U.S. that drive virtually everything else, from bond returns to credit card interest rates. Of these, the Federal Reserve actually controls only two (the Federal Funds Rate and the Discount Rate). The third rate, called the Prime Rate, is the rate that most people falsely believe the Fed changes. In truth, this is the one rate the Fed has no direct control over.
So when growth slows down, the central bank will reduce the interest rates . E.g could be Japan. They are trying to spur growth by keeping the interest rate low. When a central bank's objective is controlling inflation like in India, the interest rates gets decided by the inflation numbers of the economy.