Questions tagged [dsge]

DSGE - Dynamic Stochastic General Equilibrium models.

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Basic New Keynesian model with flexible price

I would like to know what would be the response of variables in the Basic New Keynesian model but with flexible prices (ie not with Calvo pricing). For example I have troubles to see how having ...
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13 views

Increase in money supply when price are flexible in the basic new keynesian model

I would like to know what would be the effect on price and quantities of an increase in money supply in the basic new keyensian model. What happen if price are fully flexible ? What if prices are ...
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34 views

How to define the natural rate output

I'm following Woodford's Interest & Prices to derive the microfundations for a New Keynesian model with staggereed prices. I defined the utility function and disutility function (1.1 at page 144) ...
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21 views

functional form for a consumption shock

In a DSGE model, how can I add a disturbance/shock in the consumption of households? For example given my utility function $$ U(C,H) = \frac{C_t^{1-\theta}}{1-\theta} - \frac{B}{\eta} H_t^\eta,$$ ...
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53 views

Search and Matching model with 2 agents?

I would like to know if you know any model with Search and matching framework (Mortenses-Pisarides style) with 2 types of workers (like Ricardian and rule of thumb consumers for exemple) ? I would ...
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15 views

Dynamic model calibration of rate parameters

Let's say I have this dynamic model where $\delta$ is the depreciation rate of capital $K_t$: $$K_{t+1}=sY_t+(1-\delta)K_t$$ Now, if I'm going to make some analysis where I state time $t$ as being in ...
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1answer
22 views

Is IS-LM still used in research or we learn it just to understand basic macro?

Since i had my "Introduction to advanced macroeconomics" and discovered DSGE i've been wondering if IS-LM is used in research, i know it was used in the 80's or so, but now?
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48 views

How can difference equations with an infinite summation be represented in matrix form?

I have derived the microeconomic foundations of a dsge model and I've obtained the IS and NKPC. I would like to represent them in matrix form to study the system. However the problem is that both ...
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35 views

Positive productivity shock with a fall in output

I am modeling a two-country world. Within each country there exists a representative infinitely-lived agent, a representative final good producer, a continuum of domestic monopolistic competitive ...
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27 views

Derivation question: Gali (2015), chapter 5, equation 25

I am wondering how Gali derived equation (25) in chapter 5 of his book Monetary Policy, Inflation, and the Business Cycle (2015). We have equation (21): $$ \vartheta \hat{x}_{t} = -\kappa \hat{p}_{t} +...
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94 views

How to derive the measurement equation for the state-space representation of a DSGE model?

DSGE models, after log-linearisation, have a state-space representation. In this representation, in most papers, the measurement/observation equation is simply stated. I'm wondering how one deduces ...
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11 views

Scope of DSGE models

Since DSGE models are a type of growth models that focus on assessing short term evaluation of economic fluctuations. Most of the models that I have seen are policy related, that assess the effect of ...
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62 views

Expected inflation in the real interest rate equation

Real interest rate = Nominal rate - Expected inflation In the above equation, in a quarterly data-set, which expected inflation shall be used? next quarter (q+1) or the same quarter of next year (q+4)...
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143 views

Solving Euler Equation for standard DSGE Models

I am studying a rather standard DSGE Model with a standard Utility function $U = f(c_t, n_t, M_t)$ subject to a budget constraint. Now, tosolve the intertemporal optimization problem I have, or ...
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31 views

Elasticity of intertemporal sustitution with composite CRRA function

In the usual CRRA $\frac{c^{1-\sigma}-1}{1-\sigma}$ function we have that the intertemporal elasticity of sustitution $\partial\frac{c_{t+1}}{{c_{t}}{\partial r}}$ is $\frac{1}{\sigma}$. But how can ...
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116 views

DSGE Model Solutions as a Vector Time-Series process. Examples?

I'm trying to understand how the solutions of a DSGE model can be seen as VAR or VARMA. Can you give examples of DSGE model solutions which can be seen as such? Also, does this only happen when we ...
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44 views

Literature on DSGE models featuring a financial sector

I recently read a ECB primer on DSGE models featuring the financial sector and became interested in the field. I also started to read some of the earlier literature in that field (e.g. Gertler & ...
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Deriving log-linearized equilibrium in Galí (2019)

I am reading the Paper "The effects of a money-financed fiscal stimulus" by Galí (2019). I am trying to derive the log-linearized equilibrium as given in equations (15)-(22). I believe I am ...
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25 views

Are business cycle fluctuations usually studied in a (New Keynesian) DSGE model, or can they also be studied in a growth model?

I wonder if business cycle fluctuations are usually studied in a (New Keynesian) DSGE model, or can they also be studied in a growth model?
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7 views

What would it mean for a parameter region to be E-stable but undeterminate?

What would it mean for a parameter region for a dynamic system to be E-stable, but indeterminate? E-stable: it's stable under learning... so this means, once in equilibrium, you stay there? Or does it ...
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1answer
31 views

What is meant by the abbreviation 'MSV solution', used in the context of DSGE modeling?

What is meant by the abbreviation MSV solution, used in the context of adaptive learning in DSGE modeling? E.g. see Bullard and Mitra (2002) minimum state variable (MSV) solutions it is in full, but ...
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22 views

determinacy vs. indeterminacy of equilibria in dynamic systems

As explained in Hommes (2018), equilibria in dynamic systems, like DSGE models, can either be determinate or indeterminate. A REE (rational expectations equilibrium) is determinate when there exists a ...
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44 views

Micro foundations of the Phillips Curve

In a typical NKPC: $Inflation_t = \alpha_1 Inflation_{t-1} + (1-\alpha_1) \mathbb{E}_tInflation_{t+1} + \alpha_2 RealMarginalCost + \epsilon_t$ From a micro-foundations perspective, does the ...
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19 views

Are heterogenous expectations models still determinate, closed models?

Cars Hommes proposed many models based on agents having heterogeneous expectations. Agents switch between a fixed set of prediction rules depending on their forecast error history. However, it seems ...
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35 views

Why does a model that is used for policy analysis needs its shocks and parameters to be structural (= invariant) to the shock under consideration?

In their paper, " New Keynesian Models: Not Yet Useful for Policy Analysis" V. V. Chari, Patrick J. Kehoe, and Ellen R. McGrattan argue that one needs a structural model in order to analyse the ...
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79 views

Are overlapping generation (OLG) models extensions of a DSGE model?

Are overlapping generation models (OLG) extensions of a dynamic stochastic general equilibrium (DSGE) model? Or aren't these DSGE per se?
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Inertia and rational expectations DSGE models

What types of inertia or other phenomena in the data are hard to model with New Keynesian or other DSGE models assuming rational expectations?
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63 views

In economic modelling, how are we sure the linearized equilibria behave similarly to original equilibria?

The following problem is in the context of continuous time, although I suspect something could be said about discrete time also. Let's assume that we have the following equation: $$\dot x=f(x)$$ ...
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20 views

Where to find series of capital-output ratio for the US?

While the capital-output ratio is widely used in Macroeconomics as a target in calibration, it is usually just set to be equal to 3, without specifying the data source nor the methodology used to ...
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11 views

What is the name for the techniques that are used to determine the determinacy of DSGE models with rational expectations?

What is the name for the techniques that are used to determine the determinacy of DSGE models with rational expectations? For some context, see e.g. the work of THE SOLUTION OF LINEAR DIFFERENCE ...
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6 views

How to fit data in DSGE?

I'm completely new to these models. So after I specified steady-state equations, how do I fit my existing time series. In Bayesian approach do I just need to find prior mean, std error and ...
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1answer
390 views

Log linearization of the technology dynamic

I am still dealing with DSGE models and with log-linearization of characteristic equations of the model. The one that creates me more doubts is the technology shock, that is usually modeled as an AR(1)...
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51 views

Log-linearization of real exchange rate

I have a doubt on how to log linearize an expression for the real exchange rate. I have read in several papers that they express it using substitutions. I haven't been able to find out what ...
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40 views

Elasticity of substitution in leisure

This might be a very basic question, but I am a beginner in macro models. I would appreciate help with my doubt. In different papers I have read about the elasticity of labor supply or the inverse of ...
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14 views

Are typical macro DSGE (RBC or New Keynesian DSGE) models linear, non-linear, or log (linearized)?

In Carl Hommes 2015 book on Expectations, it seems he considers DSGE models (being it either RBC DSGE or New Keynesian DSGE) to be linear, or (log)linearized models, on page 3 of the introduction. He ...
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20 views

What are main reasons a typical DSGE model is called non-linear? Why are these non-linearities important?

What are main reasons a typical DSGE model is called non-linear? Why are these non-linearities important? Is a non-linear model inherently less stable than a linear model? Why?
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39 views

Log-linear version of current account equation

I am working on my thesis, doing a two-country model with traded and non-traded goods considering incomplete asset markets and imperfect pass-through. In a sense, I am following Benigno & ...
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59 views

Log-linear version of the uncovered interest rate parity

I am trying to derive the log-linear version of the uncovered interest rate parity under complete asset markets. I know that the UIP condition is given by $$(1+i_t)=(1+i^*_t)\frac{S_{t+1}}{S_t}$$ I ...
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406 views

Interest rate rule in monetary DSGE model

I am studying DSGE models and try to solve exercise 2.2 from Gali's (2008) book. In short, consider the simple classical economy where the following approximate equilibrium conditions must be ...
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31 views

Non-traded goods in Two Country New Keynesian Model

I am working on a two-country New Keynesian model, where I include traded and non-traded goods. The final good is produced using traded and non-traded inputs: $$ Z_t=\bigg[a^\frac{1}{\kappa}Z_{T,t}^{\...
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67 views

Questions about the future of macroeconomic modeling and the role of simultaneous equation systems

I started to study about macroeconomic modeling and I am interested in the following questions. I understand that there are no definite answers to these questions. But I am interested in the opinion ...
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31 views

DSGE model with agents that develop their skills

Are there DSGE models with agents with different skill levels (and according wage differences) who can develop or lose their skills and with employees with dynamic/changing skill levels and skill ...
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28 views

Percentage/proportion of published papers with DSGE models

I remember reading a few years back an article that showed an interesting graphic with the percentage/proportion of published papers with DSGE models across time. I've tried searching, but I get so ...
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51 views

What's the advantage of DSGE relative to BVARs?

DSGE models and BVARs are commonly used in academia and policy circles. They generate different performances (e.g., in forecasting) and perhaps serve different purposes. Notwithstanding, they have a ...
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74 views

Is there any mainstream criticism of the Benes-Kumhof conclusion that the Chicago Plan would improve the US economy nowadays?

A 2012 IMF Working paper by Benes and Kumhof "The Chicago Plan Revisited " has this abstract, finding in favor of the Chicago Plan an all counts basically: At the height of the Great Depression a ...
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170 views

What is the appeal of DSGE models?

As far as I understand people like them, because they fit the data quite well when compared to VAR's for example while also having an economic interpretation. They appear to explain observations in a ...
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3k views

intuition behind the blanchard kahn conditions?

In order for a DSGE model to have a unique solution, it is required to satisfy the Blanchard Kahn conditions. However, these conditions seem very abstract to me. Is there an intuition behind the ...
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Can Dynare solve general equilibrium (GE) models with non-convex adjustment costs?

I know that Dynare (which sits on top of Matlab) can solve many kinds of dynamic stochastic general equilibrium (DSGE) and overlapping generations (OLG) models. I also know that Dynare can handle some ...
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Deriving Sufficient Conditions For Existence of Unique Non-Explosive Equilibrium In DSGE Model With Hybrid New Keynesian Phillips Curve

Consider the following New Keynesian DSGE Model with standard notation: $\pi_t = \kappa y_t + \gamma_f \mathbb{E}_t[\pi_{t+1}] + \gamma_b \pi_{t-1},$ $y_t = \mathbb{E}_t[y_{t+1}] - \frac{1}{\sigma}(...
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Optimal Tax Rates on BGP

I was going through this paper by Aghion et al. I wanted some clarification on some of the computations. I understood the process uptil the normalization on page 22. Then we can get some policy rules ...