1. Economics Flashcards
Discretionary fiscal policy lags
Recognition Lag: policymakers take time to recognize the problem
Action Lag: discussions, vote, political process
Impact Lag: time between measure implementation and its results
Crowd out effect (fiscal policy)
Expansionary Government spending may crowd out private investments
Fiscal Multiplier, Balance Budget Mutiplier
Fiscal Multiplier: 1 / 1 - [MPC* (1-t)]
BBM: Tax Increase * MPC * Fiscal Multiplier
Net Effect in DA: Fiscal Multiplier - BBM
Price Elasticity of Demand
- %ΔQ / %ΔP
- (ΔQ / ΔP) * (Po / Qo), where
ΔQ/ΔP = linear coef
Normal / Inferior Goods
Normal goods: ↑ Income = ↑ Consumption
Inferior goods: ↑ Income = ↓ Consumption
Complement Goods (A and B)
↑ Price (A) = ↑ Price (B)
↑ Price (A) = ↓ Consumption (B)
Own-price elasticity signal
Positive if demand is upward-sloping (↑ Price = ↑ Consumption)
Negative if demand is downward-sloping (↑ Price = ↓ Consumption)
Giffen Good
Rice in China (↓ Price = ↓ Consumption), given that a drop in price wil give room for consumer to spend in other goods
Income Effect (-) > Substitution Effect (+)
Upward sloping demand
Veblen Good
Gucci bag (↑ Price = ↑ Consumption), only for some individuals at some prices
If Price ↑, Income Effect and Substitution still reduces overall consumption
Cross-Price Elasticity
- Find Q = ax + b
- Ensure that x is the cross-price you want to check
- Apply the formula of elasticity
Substitution effect
Always positive (↓ Price = ↑ Consumption)
Income effect
Positive if a normal good
Negative if an inferior good
Law of Diminishing Marginal Returns
Additional output reduces as input workers increase up to a point
Operate / Shutdown / Breakeven in Perfect Market Competition
AVC < P < ATC = Operate
P < AVC < ATC = Shutdown in SR
P = MC = ATC = Breakeven
Monetarist Formula
mv = py
GDP deflator
Real GDP = Nominal / Deflator
Fundamental Relationship (Savings, Investment, Fiscal Balance, Trade Balance)
(G - T) = (S-I) - (X-M)
Gata si Xama
Production Function
- Y = A * f ( L, K)
- (Y/L) = A * f (K/L)
where
A = total factor productivity
Potential GDP
GDP* = Hours Worked * Labor Productivity
GDP Growth
GDP Growth = Growth Labor Force + Growth Productivity
Neoclassical school
Productivity gains may push LRAS (paredão)
Keynesian school
Demand shifts = f (Expectations business cycle)
Wages are downward sticky
Government should spend or low interest rates
New Keynesian school
Wages and other input prices are also downward sticky (hard to lower)