Keynesian's Economics
05/03/2021 Keynesian’s Economics 1 Background • Great Depression, Black Thursday, 24 October 1929 • Situation: overheated asset price and tight money policy. • The falldown of stock value. After first 10 months 744 banks failed. In 1933, 4000 banks failed. Depositors lost $140 billion • The stock market lost 90% of its value between 1929 and 1932. People lost all confidence in Wall Street • High unemployment, from 3,2% in 1929 to 25% in 1930 • Housing price fall down 67% • International Trade reduce 65% • Deflation, betweein 1930 and 1932, price fell 30% 1930 : -6.4% , 1931: -9.3% , 1932 : -10.3% 2 1 05/03/2021 3 John Maynard Keynes • Books, “Genral Theory”, Anti-thesis of classical economics • Market is imperfect • Market forces produces undesirebale outcome such as deep depression • Price does not adjust quickly • Give policy makers guidance how out of recession and facing unpredictable financial market • General Theory is the response to economic situation ata that time • Full employment by neoclassic is special case, Keynes unemployment equilibrium is general case • When crisis, income can be hoarded and high risk, AD will fall • Level of employment depend on demand (actual spending and the xpectation) 4 2 05/03/2021 Short-run • Sticky Price/ Price Rigidity (not all products) : price is difficult to adjust when recession happen such as wages, restaurant menu, manufacture products, interest rate. Keynesians believe that prices, and especially wages, respond slowly to changes in supply and demand, resulting in periodic shortages and surpluses. • Why Sticky ? Companies need to cover all cost like before recession situation. New price need more cost (advertising, raw material, production, positioning, etc) • Raw products (commodities) easy to adjust such as food (rice, wheat, onion, beans), mining (oil, gold, coal), plantation (cotton, crude, palm oil, rubber) • Sticky price create macroeconomic externality, what happen at macro level is different at the micro level.
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