# All Questions

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16 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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89 views

### Best-responding to a stochastically higher distribution of bids

In Auction Theory, Krishna writes that: a bidder who faces a stochastically higher distribution of bids–in the sense of reverse hazard rate dominance–will bid higher (This follows the proof of ...
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### Nested Multinomial Logit Estimation

I am trying to estimate a nested multinomial logit model for transportation mode in R. I am using the following model. ...
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### Does the law of motion remain constant in a rational expectation model? Does it constantly change in a boundedly rational agent framework?

Is the following true? The rational expectations hypothesis also implicitly assumes that the law of motion of the economy does not change, which actually is a self-fulfilling assumption as long as ...
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### How to achieve the best outcome by a single statement in this game?

This game is taken from Schelling's Game Theory: How to Make Decisions by R.V. Dodge, in which contenders practice brinksmanship to their own advantages. It goes as follows: Anderson, Barnes, and ...
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### How does interest rate impact exchange rate?

When I’m using the forward exchange rate formula based on non-arbitrage theory, it tells me that a positive interest rate spread (i_domestic > i_foreign)would cause the forward exchange rate(units of ...
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### Is there a standard term for this tradeoff when subsidizing: inducing dependence vs providing support?

I've often heard it informally argued "people will become lazy if you give them handouts". Although I doubt the economic sophistication of most such assertions, I do think they have a real point: you ...
12k views

### CES: Production function: Elasticity of substitution $\sigma = 1/(1 + \rho)$

I have to prove that $\sigma = 1/(1 + \rho)$ for the CES production function: \begin{align} q = (l^\rho + k^\rho)^\frac{1}{\rho} \end{align} I found out that I need to solve the following equation: \...
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### Determining the price level when velocity is unknown, can k = v?

According to the quantity equation mv = py if m = 2000, y = 400 and then if m doubles while velocity remains constant (%change in p = %change in m) would the change in P be from 2,5 to 5 or 5 to 10? I'...
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### Should I include country dummies when I combine datasets of 3 countries?

I am currently doing the analysis using firm-level data of three countries combining together. Also, it is a cross-sectional analysis. Therefore, in the regression, I control for industry dummies to ...
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### why is market clearing price assumed in cournot model with homogenous products

In the cornout model two firms choose the amount of a product they wish to produce. It is assumed that the price that results is the market clearing price for the total supply. Is there a ...
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### How do you perform economic analysis of a country? [closed]

I have no academic background in economics except for one class I took in engineering school. In this recent crisis of coronavirus, I would like to know how my country is doing overall and how deep in ...
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### Why are indifference curves (often) of infinite length?

Indifference curves are often of infinite length. Is this implied by monotonicity or non-satiation? If not, what is/are some condition(s) that are sufficient for indifference curves to have infinite ...
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### Proving a result In Jones (1999) “Growth: With or Without Scale Effects”

Jones (1999) builds his semi-endogenous growth model where output is produced with only one input, labour, in the following "research" function: $$Y = A^\alpha L_Y$$ Labour is augmented with ...
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### Estimating a difference-in-differences with multiple time periods: why do margins results change when you simply change the base period?

My understanding of margins results is that they should not be sensitive to the base period chosen for a categorical time variable. However, I find that they are. ...
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### How does the GDP multiplier work?

When we learn about the GDP multiplier, it is portrayed as 1/MPS, because savings are supposedly a leak out of consumer spending. However, what I don't understand is aren't those savings spent anyways ...
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### Basic question on S=I

Consider the identity: $$Y=C+I+G+X-M$$ where $Y$ is defined either as value-added output, or income, or total expenditure. Now, consider private individuals, who decide to save money, as opposed to ...
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### Does the federal reserve create any type of deadweight/welfare loss?

In microeconomics, we learn that when a good is overproduced or under produced, there is a dead weight loss associated with it. It seems like the same concept would apply to macroeconomics, where the ...
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### 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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### Marshalian and Hickisian Demands and Slutsky Equation

everyone. I have the following question: A consumer has the following indirect utility function: $V(p_1,p_2,b) = (p_2k-b)p_1^{-1} \left[ \frac{2p_2k - 2b}{p_2} \right]^{-2}, x_2 < k$ a) Find ...
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### What would we say on the utility of risk and its consequences?

Anything has its risks and anything has its utility or desutility. The risk aversion causes a looking for safer alternatives in the market which maximizes utility in a trading off between risk and ...
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### Log of dummies variables

I am having a bunch of dummies variables and some of them when trying to get the scatter plots they are collapsed on the horizontal line. It is hard to see any relation. I know from theory they should ...
14 views

### Controls for a GDP per capita model

I'm constructing a model to test the relationship of some different factors on GDP per capita in a single year using simple OLS regression. Most studies I've found on economic growth simply use the ...
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### Why should the cost of home ownership and home renting be equal in the long run?

According to the person in this video (at about 10:10) from the economist, the evidence shows that long run cost of owning and renting homes are approximately same. The video itself tries to explain ...
7 views

### Do Fines Imposed by Regulators Improve Performance?

After receiving a fine, do companies immediately seek to recoup their loses or do they take it on the chin? I'm just wondering if it's the most efficient way of deterring complacency or non ...
23 views

### In a binary-dependent variable model (logic) will the inclusion of a scale introduce endogeneity?

This question is somewhat related to my previous question, see here: https://stats.stackexchange.com/questions/463221/why-when-do-attitudinal-scales-introduce-endogeneity I wonder why a scale as an ...
$f(x_1,x_2) = min \{x_1,x_2\} + x_2$ if that was the production, what would the isoquant be? Would it simply follow $x_1 = x_2$? I'm not entirely sure what it the graph would look like.