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10
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3answers
759 views

When treating a relative, normalized utility function as a pmf, what is the interpretation of Shannon entropy or Shannon information?

Suppose $\Omega$ is a set of mutually exclusive outcomes of a discrete random variable and $f$ is a utility function where $0 < f(\omega) \leq 1$, $\sum_\Omega f(\omega) = 1$, etc. When $f$ is ...
10
votes
3answers
2k views

Under what conditions is a monopoly undesirable?

First of all, I realize that "undesirable" is an ambiguous term. So, to clarify, when is a monopoly undesirable under the following metrics? Pareto efficiency Reduces consumer surplus Social Welfare (...
10
votes
3answers
1k views

CES Production Function with $\rho>1$

In using CES production functions of the form $f(x_1,x_2)=(x_1^\rho+x_2^\rho)^{1/\rho} $, we always assume that $\rho\leq1$. Why do we make that assumption? I understand that if $\rho>1$, the ...
10
votes
2answers
208 views

When should a receiver randomize across actions in a signaling game?

Suppose there is a signaling game with a finite message space $M$, finite action space $A$, and finite type space $T$. Even simpler, all sender types have identical preferences (the receiver just ...
10
votes
1answer
672 views

Examples of Applied Micro Paper with R (!) Code and Data in Public Repository

Can anyone suggest examples of relatively simple applied micro papers (e.g. an RCT or straightforward regression model) of possible interest to a general audience, that have their data and code, ...
10
votes
2answers
133 views

Does 'ethical investing' have any effect?

Some mutual funds make a point of only investing in ethical companies (eg avoiding arms companies, polluters, human rights violators, etc). Or other organisations pressure funds to stop investing in ...
10
votes
2answers
175 views

Fair voting procedure when there are many issues

When several people have to decide about a single yes/no issue*, the natural decision rule to use is the majority rule. But when there are many issues to decide upon, the majority rule is "unfair" ...
10
votes
1answer
335 views

Are there fundamental reasons why (exponential) economic growth is highly desirable?

One of the most widely published measures of the economy is the economic growth as a % of the GDP; i.e. the degree to which an economy grows exponentially. In my understanding, when the rate of ...
10
votes
4answers
1k views

Why is the Cobb-Douglas production function so popular?

As relatively novice quantitative analyst/ Cost analyst, Ive been asked to estimate the level of a given organizations productivity more than once, and then forecast for the next couple of periods. ...
10
votes
1answer
317 views

Straub and Werning, 2014, on zero capital taxation

This is a test balloon to see whether these kinds of questions are appreciated/welcome on Econ.SE: I had a hard time grasping Straub and Werning (2014) (no paywall). I understand the general ...
10
votes
1answer
174 views

Do large public companies ever “quit while they're ahead”?

Large public companies (e.g. S&P 500) seem to end their lives in one of two ways: either they're acquired (or taken private), or they go bankrupt. Theoretically it seems like there should be a ...
10
votes
0answers
677 views

Modern theory of integrability of demand?

I am aware of Hurwickz Uzawa work in integability, neatly summarized by Border http://people.hss.caltech.edu/~kcb/Notes/Demand4-Integrability.pdf I am wondering if there is any modern treatment of the ...
9
votes
5answers
503 views

What kind of economic freeware exists for economics students?

Can anyone recommend some free software for students studying economics for use in senior projects, theses, or dissertations?
9
votes
3answers
1k views

Is Marx considered an important classical economist?

In a post on the politics stack exchange, I came across the following description of how Marxism fits into the history of economic thought: Most professional economists consider Marx' work on ...
9
votes
4answers
3k views

Why is economic growth measured exponentially rather than linearly?

If economic growth is indeed highly desirable (see this question), why must this growth be exponential? With finite resources, exponential growth might hit limits rapidly (or be impossible?). Why not ...
9
votes
5answers
1k views

Are terrorists rational?

Terrorism in general, and suicidal terrorism in particular, is popularly seen as “irrational,” but many economists and political scientists argue otherwise. This quote is from Terrorism: The ...
9
votes
4answers
2k views

Has the world become poorer?

This question is not backed by serious economic research but mainly by a very simple attempt to look at how the world economy has changed. I am asking whether and why the world has, over the past 50 ...
9
votes
7answers
4k views

What are the known / alleged problems against using energy as currency?

What are the known (and alleged) problems of using Joules (i.e. a measure of energy/work) as a currency? I tried to find such idea in Google (searched terms like "technocracy", since someone told me ...
9
votes
5answers
972 views

Why don't Burgers cost 5 cents?

In this blog post, economist Bob Murphy raises a puzzle involving the principle that in a competitive market, the price equals the marginal cost: There’s a general principle from intro to ...
9
votes
3answers
333 views

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 ...
9
votes
3answers
1k views

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/...
9
votes
3answers
2k views

Why absolute value in elasticities and marginal rate of substitution?

This is a point I find very confusing and very hard to justify to students. Depending on the books, one finds many different conventions regarding the sign of elasticities and marginal rate of ...
9
votes
3answers
1k views

Can the stock market show indefinite exponential growth?

In a comments on a question on money.SE, the following dialog took place: Eventually there will not be enough matter to represent all the money, so we know for certain that the answer is "No" for a ...
9
votes
6answers
889 views

Piracy/File sharing - Why aren't songs, movies or books given for free?

Why aren't songs, movies or books given for free (+ads)? i. Every minute, people are pirating and there is no stopping that. If people see 0.99 for a song on iTunes and 0.00 for a song on a torrent ...
9
votes
3answers
47k views

What is the difference between intensive margin and extensive margin in labor economics?

What is the difference between intensive margin and extensive margin in labor economics, or general RBC model, where we talk about labor-hours supplied changing with extensive margin or intensive ...
9
votes
1answer
1k views

Why is capital often not included in New Keynesian models? Is there a reason other than modeling difficulty?

In New Keynesian models, like the ones in Gali's simple New Keynesian model or even Mankiw-Reis NK model on sticky information, capital is often not included. Now people do say that there are ...
9
votes
2answers
818 views

Thin indifference curves

If a consumer follows the rationality axiom of continuity (i.e. no jumps in his preferences), the indifference curves of a utility function are said to be thin. Why does continuity ($x \succeq y \...
9
votes
3answers
3k views

Why does the Brexit cause a fall in crude oil prices?

Oil prices have also fallen sharply in the wake of the referendum outcome, with Brent crude down 5.2%. The price of Brent crude fell by \$2.68 to \$48.24 a barrel, its biggest fall since February. ...
9
votes
2answers
466 views

Where to start with social networks?

I'm working on my master's thesis in industrial organization and I have a model that is based on social networks. I have had two courses about social networks (one more focused on basic industrial ...
9
votes
2answers
2k views

Intuition behind risk premium

In Lecture 20 of MIT's Microeconomics course, a situation is proposed where a 50/50 bet will either result in losing \$100 or gaining \$125 with a starting wealth of \$100. It is stated that a person ...
9
votes
3answers
478 views

Would healthcare costs increase (in the long term) if all smokers quit?

According to research by Jan J. Barendregt, M.A., Luc Bonneux, M.D., and Paul J. van der Maas, Ph.D.: RESULTS Health care costs for smokers at a given age are as much as 40 percent higher than ...
9
votes
2answers
100 views

Are the figures quoted in this liblabcon's blog post accurate? (topic: UK banks)

Background With regards to the UK government. I have recently been involved in a debate stemming from figures mentioned in this blog post (the blogger was advocated by Occupy London's facebook page ...
9
votes
3answers
390 views

Why wouldn't competition prevent “usurious” payday loan rates?

The current Wiki page on "Payday Loans" claims loans are priced above marginal cost. The justification is that If a lender chooses to innovate and reduce cost to borrowers in order to secure a ...
9
votes
1answer
282 views

What does Battigalli really mean by “Players can not choose strategies, they can only choose actions.”?

In this video (from 7: 30 to 9: 00)on Youtube, Battigalli mentions the state of world for a simple three-legged centipede game, which, in his own word, is "$\ldots$a description of everything ...
9
votes
3answers
311 views

Causes of income inequality in the US

I read an article in BusinessWeek that talked about income inequality in the US. The article attributed the difference to the Intel chip that came in 1971. Since that time big hi-tech companies have ...
9
votes
2answers
460 views

Regression over the whole population

What's the meaning of the standard error of a coefficient in a regression when the whole population is included? I've been so puzzled by this question. Because it seems to me, standard errors make no ...
9
votes
1answer
11k views

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 + ...
9
votes
1answer
209 views

Are there papers in evolutionary game theory that are influential in economics?

The concept of evolutionary game theory has been around for about forty years. The mathematical details are worked out quite well. Yet this discipline is usually a side note in game theory classes and ...
9
votes
1answer
124 views

Rothschild-Stiglitz working paper?

I recently rediscovered Rothschild and Stiglitz's classic paper, "Equilibrium in Competitive Insurance Markets". In footnote 7, they refer to an earlier version of their paper for details on the ...
9
votes
3answers
224 views

Why is bargaining more common in poor countries?

In poor countries, one might bargain over even say a bottle of water. This is unthinkable in most rich countries. (And in countries that develop rapidly, one can actually notice the steady movement ...
9
votes
7answers
65k views

How interest rate affects currency

I am quite new to economics. I was reading about changes in interest rates and its effect on currency value. The fact is as interest rates increases, the currency value also increases and vice versa....
9
votes
4answers
801 views

Should Costs of Travel to Buy Goods be Regarded as Transaction Costs?

Within the approach of New Institutional Economics associated with Oliver Williamson and others, emphasis is placed on transaction costs as a key factor in explaining why different forms of economic ...
9
votes
1answer
989 views

Take-it-or-leave-it PBE

I've found an interesting question looking at perfect-bayesian-equilibrium. I haven't seen a question where beliefs are not discrete. There is a single potential buyer of an object which has zero ...
9
votes
2answers
614 views

Depreciation and second-hand markets for bicycles

Probably the answer to this question is "business as usual", but I've observed of late that the market for bicycles is pretty weird. You can buy a brand new factory-produced bicycle in the US (I'm ...
9
votes
1answer
114 views

second order stochastic dominance without the same mean

Let $F$ and $G$ be two distributions with the same mean. $F$ is said to second order stochastically dominate (SOSD) $G$ if $$\int u(x)\mathrm dF(x)\ge \int u(x)\mathrm dG(x)\tag{1}$$ for all ...
9
votes
3answers
107 views

Are options a form of insurance?

In my economics classes we have studied some really rudimentary concepts about insurance. I'm not really sure what qualifies as insurance to be honest. I was wondering if options are considered a ...
9
votes
1answer
633 views

Dynamic Optimization: What if the second order condition does not hold?

Consider the following dynamic optimization problem \begin{align} &\max_u \int^T_0{F(x,u)dt}\\ \text{s.t.}~& \dot{x} = f(x,u) \end{align} FOCs The Hamiltonian is given by \begin{align} H(x,u,...
9
votes
1answer
178 views

Banking Regulatory Frameworks, between the 1973 collapse of Bretton Woods and the introduction of the Basel Accords in 1988?

Does anyone know of any work on banking system behaviour, and in particular the governing regulatory frameworks that applied between the 1973 collapse of the gold standard based Bretton Woods system ...
9
votes
1answer
68 views

Competition and welfare - empirical evidence

Consider the following claims: less competitive markets deliver worse outcomes for consumers, less competitive markets deliver lower social welfare, less competitive markets deliver higher prices/...
9
votes
1answer
475 views

What are the economic perspectives regarding the game of salary negotiations?

Apologies if I use non-economic language to explain what I suspect is a practical application of economics. I have no formal education in economics whatsoever but hoping you guys/girls might be able ...

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