Deflation in an economy can be attributed to more than one factor, including:
A fall in the price of goods and services increases the purchasing power of the people. This might present a positive picture in the short run. However, if this effect extends, it leads to deflation, adversely impacting the economy. With deflation, prices and wages begin to fall. Consequently, the supply of money shrinks, resulting in even lower prices and wages. This creates a vicious 'deflationary spiral' of negatives, including declining profits, closing factories, shrinking incomes and employment and a rise in defaults on loans by individuals and companies. Deflation creates a liquidity trap in the economy when lower interest rates fail to stimulate spending. Deflation usually occurs during recessionary times and tends to aggravate its negative effects.
Inflation is the opposite of deflation and refers to a rise in the general level of the prices of goods and services. Deflation is considered as negative inflation because it increases the real value in money, whereas inflation has the reverse effect. Deflation causes a burden on borrowers and holders of various illiquid assets and is favorable for savers and holders of liquid assets and currency. On the other hand, inflation favors short-term consumption and borrowers and is a burden on currency holders and savers.
Both inflation and deflation can negatively impact the economy. However, most economists consider the effects of moderate long-term inflation to be less damaging than deflation.