The business cycle refers to the natural pattern of upturns (expansions, recoveries) & downturns (depressions, recessions) in the macroeconomy
11 recessions since WWII with an average length of 10 months; average expansion is 5 years, 7 months Full business cycles range from 18 months to 10 years, 8 months
Two measures are used to determine recessions: ◦ Unemployment ◦ GDP Macroeconomic analysis is aimed at making policy decisions that shorten recessions and lengthen expansions
Employed + Unemployed = Labor force Unemployment rate is the percentage of labor force unemployed Unemployment goes up during a recession, down during an expansion (over the long term) – but there is ALWAYS unemployment Relationship between aggregate output (GDP) and unemployment is inverse
Because prices have kept pace with (and in some areas exceeded) wage gains in last 40 years, there has been little impact on standard of living Inflation is an increase in overall price level; deflation is its opposite Inflation causes increased spending; deflation causes increased savings – both have negative impacts, so price stability is a goal of macroeconomics
Long-run economic growth is accomplished gradually; GDP grows a few percent per year at most. Rule of 70 is used to determine how many years it takes for GDP to double at its current rate of growth Rule of 70 can only be applied to positive growth rates
Chart of Inflation YearJanFebMarAprMayJunJulAugSepOctNovDecAve