Questions tagged [macroeconomics]

Macroeconomics is a branch of economics dealing with the aggregate economy as a whole, rather than individual markets.

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2answers
973 views

Math basics for Macro&Micro economics and econometrics

I have just been admitted to a graduate school for studies in economics and I major in public administration during my undergraduate time. I have learnt linear algebra, single variable calculus, ...
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Larry Summers on the causes of secular stagnation

In an influential speech on November 8, 2013 at the IMF Annual Research Conference, Larry Summers suggested that slow economic growth in the years following the 2007–2008 financial crisis might be due ...
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Optimality of Zero Capital Taxation

The Chamley-Judd result of zero optimal capital taxation says that 0 capital taxation are required in order to maximize welfare at the steady state. The result is 30 years old. Still assuming that ...
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1answer
155 views

why is labor $h_t$ often average working time percentage of non-sleeping time in RBC?

Cobb-Douglas production is often given by $Y=AK^{\alpha}L^{1-\alpha}$, and $L$ is often just labor. But in RBC model, I notice that labor $h_t$ is restricted to $[0,1]$, and interpreted as working-...
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How is money created?

This might seem like a really simple question, but I am really troubled by it on a macro scale. The money has to come from somewhere. Someone might start up a business that creates things or takes ...
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Why is poverty worse in larger cities?

In inner cities in the US there is more poverty (as a proportion of the population) than in mid-sized cities or small towns. Do we have a definitive answer as to why this is?
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Combining functions that satisfy the Inada conditions

Suppose $f: \mathbb{R} \to \mathbb{R}$ and $h: \mathbb{R}^n \to \mathbb{R}$ are functions that satisfy the Inada conditions, and also $$ \forall i: \lim_{x_i \to \infty} h(\mathbf{x}) = \infty. $$ ...
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963 views

Simulating Real Business Cycle

Basically I need to replicate Hartley's 'A User's Guide to Solving Real Business Cycle Models' (http://www.econ.ucdavis.edu/faculty/kdsalyer/LECTURES/Ecn235a/Linearization/ugfinal.pdf). Specifically, ...
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Which capital accumulation is right? $K_t = (1-\delta)K_{t-1} +I_t$ or $K_t = (1-\delta)K_{t-1}+I_{t-1}$?

In a lot of models with capital, I find different variants of capital accumulation formula as follows: $K_t = (1-\delta)K_{t-1} +I_t$ or $K_t = (1-\delta)K_{t-1}+I_{t-1}$ Which one is more ...
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1answer
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Lagrangian: How to understand the No-Ponzi Condition

In http://www.uni-hamburg.de/fachbereiche-einrichtungen/fb03/iwwt/makro/slides2.pdf page 8, lagrangian is written as follow: $$L = E_0 \sum_{t=0}^{\infty}\beta^t\{U(C_t,N_t) + \lambda_t(P_tC_t + ...
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Graduate Level Textbook on Labor Economics and Macro-Labor

What would be good textbooks at the graduate level that deal with Labor Economics and Labor-Macro (As in, Equilibrium Unemployment Theory, Shimer Puzzle etc)?
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Solution Method for Infinite-Horizon Maximization Problem

Full disclosure: this problem was part of a final exam that none of our class could really solve definitively. Below the general form is a specific utility function we worked with that I'll try to ...
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1answer
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Deriving formulas from Gali's book on the New Keynesian model

I've found this link with all the derivations from Gali's book on New Keynesian model. In page 13, eq. $(3.7)$, the author derives the optimal price-setting rule $P_t^*$ by a representative firm that ...
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4answers
17k views

Calculating rate of growth of per capita income

Given this question: National income is increasing by 1.5% a year and population by 2.5% a year. What is the rate of growth of per capita income? Attempt: Since per capita income is GDP/ ...
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1answer
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Infinite Horizon Transversality Condition

This question is an extension of Endogenous Growth: Balanced Growth Path with CRRA Utility however, this question asks about a specific concept used in that question, and I think it would be helpful ...
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1answer
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How to show the production function is concave in K and L but not strictly so?

Suppose we have a production function with constant returns to scale. Let us denote it by $F(A,K,L)$ where $A$ is the technology, $K$ the capital and $L$ Labor. Further assume the first partial ...
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What benefits does Bitcoin (i.e. cryptocurrency) offer?

I really, really like moderate inflation. I live in Sweden where the interest rates just went negative because we are on the brink of deflation, and the rate of inflation we have now is far too low. ...
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2answers
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Why in most macro models technology is labor-augmenting?

Take Romer's advanced macro book as reference. In it the Solow model,the Ramsey model and the Diamond OLG all contain the fundamental $A_t$ variable representing technological progress. In all these ...
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1answer
247 views

Have social accounting matrices and input output models fallen out of fashion? if so, why?

My perception may be uninformed but 'worldwide' I believe collection of official data on input output tables of economies dont seem to be keeping up with the times. Im aware that compilation of such ...
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2answers
817 views

What is the difference between identification, calibration and estimation?

In fitting theoretical models to data, what is the difference between identification, calibration and estimation?
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1answer
315 views

Dixit-Stiglitz Pricing Index

I have recently encountered (in a few applications), the Dixit-Stiglitz Pricing index. Consider a Constant elasticity of substitution form of utility $$U=\left(\sum_{i=1}^{N}c_{i}^{1-\frac{1}{\sigma}}\...
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1answer
560 views

Endogenous Growth: Balanced Growth Path with CRRA Utility

I've got a model of endogenous growth due to spillovers. $\textbf{Model:}$ $$K_t=\frac{1}{n}\sum_{t=1}^nk_t$$ In this model, $k_t$ is chosen by agents, and $K_t=\bar{k}_t$ (the average of all $k_t$). ...
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Steady state Solow model with exogenous technological change

Consider the following question: So, assume the standard function for production: $$Y_t = A_t K^\alpha_tL^{1-\alpha}$$ where $L$ is fixed. Then, the growth rate of output is: $$g_Y \approx g_A + ...
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Literature Recommendation: Advanced Undergraduate Economics

I come from a strong quantitative background and am going to law school in the fall. I'm interested in financial product regulation and competition law. I have taken an introductory course in ...
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3answers
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How was the Cobb Douglas function derived?

In economics and econometrics, the Cobb–Douglas production function is a particular functional form of the production function, widely used to represent the technological relationship between the ...
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1answer
445 views

Is a 'Brexit' really that bad?

There seems to be a lot of fear that a Brexit will have a very bad impact on both the European and the British economy. Why would this be, does a Brexit imply that there will be less trade between EU-...
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1answer
496 views

Where do I find the US GDP growth on FRED? [closed]

I have never used FRED before. I need to locate the annual growth rate in Real GDP to do some data analysis for my intro macro class. The TA and the Prof were utterly unhelpful and I'm frankly lost. ...
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What is the no ponzi condition for this representative consumer problem? Tags: Initial condition, no-ponzi game

This question is following Farhi et.al. 2014's consumer budget constraint modified to add a government bond and removing money. A simplified version is given below which is pertinent to the question. $...
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In log-linearized New Keynesian model, what do $Y$, $Y_t$, $y_t$ actually mean?

This may be a weird question, but I am unfortunately confused by terms. Let us suppose log-linearized New Keynesian model as suggested by Gali here: http://crei.cat/people/gali/pdf_files/monograph/...
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3answers
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All else being equal, What is the value of job creation?

Job creation value Just to clarify, I have no experience, academic background or deep understanding of economics. Apologies for such a basic question but I couldn't find a real answer. I hear a lot ...
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1answer
360 views

Why lower the deposit rate if it is already negative?

The European Central Bank (ECB) has been lowering the interest rate on its deposit facility, first to -0.1% in June 2014, then to -0.2% in September and eventually to -0.3% in December 2015. But what ...
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CES production function estimation

Introduction There are different ways of estimating the parameters of a production function. For example, single-equation and system equation techniques are both possible. Another difference among ...
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1answer
144 views

Is there a reproducibility crisis in Economics?

I am an undergraduate economics student, and came across this paper by John Ionnadis on 'The Power of Bias in Economics Research'. the findings are quite bleak. https://academic.oup.com/ej/article/...
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Who regulates the balancing of the books for commercial banks? How? Is it public information?

I've just read Money Creation in the Modern Economy, an article published by the Bank of England. This article brings about a lot of questions in my mind. This article talks about money being created ...
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1answer
299 views

Present value of a payment

Suppose I've just won 1'000'000 dollars in a game show. At the end of the program they tell me that they will pay me the prize as following: they will deposit in my bank 50'000 dollars every year for ...
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3answers
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Has the natural rate of unemployment decreased with modern travel and the Internet?

The natural rate of unemployment is a combination of structural unemployment and frictional unemployment. Structural unemployment is caused by a surplus of labor at a given wage in a given area. ...
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1answer
271 views

Efficient Market Hypothesis and constant ex-ante real interest rates?

According to Hayashi's Econometrics (page 151), efficient market hypothesis is a joint hypothesis combining: Rational expectations $\rightarrow$ expected inflation$= \mathbb{E}(\pi_{t+1}|I_t)$, where ...
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2answers
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Re-evaluation of Consumer Price Index (C.P.I.) weights

How are the weights of the various household items in the Consumer Price Index (C.P.I.) basket decided, i.e., how are they re-evaluated every year? Is it done manually or automatically? If its done ...
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1answer
524 views

Calculating Time to Balanced Growth Path

$\textbf{Model:}$ $$\underset{\{c_t,k_t\}}{max}\;\sum_{t=0}^\infty\beta^t\frac{c_t^{1-\gamma}}{1-\gamma}$$ $$s.t.\;c_t=Rk_{t-1}-k_t$$ $$c_t,k_t\geq0$$ At time $t$, $c_t$ is consumption and $k_{t-1}$ ...
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2answers
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Uncovered Interest Parity question

I am trying to understand the fact that, given that the uncovered interest parity holds, a rise in dollar interest rates will cause the dollar to appreciate. Is this a good intuition? Uncovered ...
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2answers
126 views

What happened to the money multiplier after QE?

QE meant that the monetary base increased dramatically, yet we don't see such a large reaction in money supply (I am thinking of M4 for the UK) nor in inflation. Why is this money not being lent out? ...
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1answer
527 views

Why New Zealand dollar keeps falling against USD and other currencies?

New Zealand seems to have strong economy and governed well by the RBNZ. Agreed that recent decrease in the dairy prices globally has some negative effects on the economy. But with the large service ...
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3answers
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Creation of Money - Hypothetical Situation

Imagine you sell me some consulting services. I don't have any cash, so I give you a $100 IOU instead. You now have a $100 Note Receivable on your Balance Sheet. ...
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3answers
480 views

How to solve a linear forward-looking equation $x_t = \beta E_t[x_{t+1}] + k$ where $\lim_{t \to \infty} x_t = 0$ and $0<\beta < 1$?

How does one solve a linear forward-looking equation $x_t = \beta E_t[x_{t+1}] + k$ where $\lim_{t \to \infty} x_t = 0$ and constant $k,\beta \in \mathbb{R}$, $0<\beta <1$?
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1answer
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How to relate real rate of return on capital to bond interest rate: Lagrangian

Suppose that household resource constrain equation is as follows: $$P_tC_t + Q_tB_t+ P_tI_t \leq W_tL_t+R_tK_t+B_{t-1}+D_t$$ where $P_t$ is price at time $t$, $Q_t$ is the price of one bond quantity, $...
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Most important but untested theories in economics? [closed]

In the opinion of the economists here, what are some of the more important theories in economics that remain untested? By untested I mean theories that, though perhaps evaluated using empirical data, ...
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2answers
51 views

Industries that thrive in crisis like COVID 19

I am aware that some industries thrive during crisis times like COVID 19...Food supplies, medical, counselling, funeral services, liquor etc. Are there any other industries that may do well during ...
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1answer
174 views

What could happen if a country changes their currency rate constantly?

Introduction Imagine this random country. "Yolistan", it is a new country that appeared after a war/revolution/independence/whatever. The currency it's the "Yolo" Yolistan needs to import resources ...
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2answers
403 views

How can we get negative **real** interest rate?

According to Fisher's equation, Real interest rate=Nominal interest rate - expected inflation rate So, how can we get negative real interest rate? I'm in doubts. On one hand, purely from algebraic ...
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1answer
55 views

Why doesn't stock market help to boost the economic growth directly?

For example, during the recession, the central bank often goes to buy financial instruments that are riskier than government bonds (such as corporate bonds)- which is called "quantitative easing&...