# All Questions

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### Mean Field/Differential Game and Measurability

Consider the following scenario. There is a continuum of players in a population, with population measure normalized to $1$. Each player has a type $\theta \in [0,1]$ and we suppose that $\theta$ is ...
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### Any examples of non-parallelism making Diff-in-Diff estimation biased?

The key assumption in a Differences in Differences design is that both the control and the treatment group have parallel tendencies, that is, they'd follow similar paths over time if there was no ...
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### Understanding Boserup's theories on food and overpopulation

From what I understand about Boserup's theories, she claims that when populations grow and near the carrying capacity of whatever habitat they live in, businesses will have incentive to invest in new ...
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### Consumer Utility Maximization equivalent of economies of scope

Economies of scope captures the idea of having efficiency in variety. I've come across this idea only in producer theory to capture the idea that companies may benefit from their ability to reduce ...
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### How does the dollar value of all bitcoin compare with the total cost of the electricity required to generate it?

The world's Bitcoin mining in the aggregate uses surprisingly large amounts of electricity. Princeton computer scientist Arvind Narayanan estimates that Bitcoin mining now uses about five gigawatts ...
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### Are there any experiments about financial games with just one player?

I was wondering if there are any experiments of financial games (laboratory games under controlled circumstances like Plott and Sunder's Rational Expectations and the Aggregation of Diverse ...
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### How can protectionist policies keep wages low?

A German economist who also worked at the ECB notes that: Germany’s bilateral trade surplus with the US has barely changed, despite substantial swings in the euro-dollar exchange rate – which was ...
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### Is there an income inequality metric which also considers the total income?

I'm trying to compare some data I have about two companies, and in order to do so I need to compare their income inequality, but also to take in consideration the total income of each. For example if ...
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### Has any research found that automation will decrease inequality?

A paper by IMF researchers (but not an official position of the IMF) has found that automation will lead to higher inequality under all scenarios they considered. Even in the scenario where robots ...
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### Research community around logistics micro-economic topics?

Is there the equivalent of a Rand Journal of Economics for the topic of logistics, focusing on the micro-economics of productivity gains via automation or disruptive technologies. There is the ...
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### Finding savings in an Overlapping Generations model

I have not seen this question asked anywhere, so I'm posing it here in case anybody else (hopefully) can help me get to the answer. In a nutshell, my question is: how do we arrive at the saving ...
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### Marginal propensity to consume and multiplier effect

Recently I had a conversation with a certain person (call her X) about the marginal propensity to consume (and about the multiplier effect). With marginal propensity to consume I mean $c_1$ as a part ...
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### 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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### what does historical volatility explain?

Let's assume we have close prices of one stock of period one year. As far as I understand historical volatility is standard deviation of log return, however I do not understand what this actually mean....
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### Sample used in calculating the sample regression function

Does the OLS (ordinary least squares) method of regression consider only one sample value in calculating the sample regression function (SRF)? If not, then how is the SRF created when there is more ...
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### Linearization of VES production funtions

I know that the linearization of a CES (constant elasticity of substitution) funtion is a bit complicated. There is even an R package dedicated just for that - the econometric estimation and ...
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### Eaton & Kortum - Technology, Geography, and Trade - How theta impacts geographical barrier

The paper says: Smaller $\theta$ implies more heterogeneity, and thus larger comparative advantage, and hence stronger force for trade relative to resistance $d_{ni}$. Would it be correct to ...
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### What drives the Idiosyncratic Volatility puzzle?

I am currently analyzing the IVOL puzzle and I find in a single sort that the higher the IVOL the lower the return. Additionally I do a double sort, first sorting on skew and then on IVOL. I find that ...