1222 results
Exploring Economics, an open-source e-learning platform, giving you the opportunity to discover & study a variety of economic theories, topics, and methods.
Yes, Money is Endogenous. Who Cares?
How do people make decisions? There is a class of models in psychology which seek to answer this question but have received scant attention in economics despite some clear empirical successes. In a previous post I discussed one of these, Decision by Sampling, and this post will look at another: the so-called Fast and Frugal heuristics pioneered by the German psychologist Gerd Gigerenzer. Here the individual seeks out sufficient information to make a reasonable decision. They are ‘fast’ because they do not require massive computational effort to make a decision so can be done in seconds, and they are ‘frugal’ because they use as little information as possible to make the decision effectively.
Bounded Rationality: the Case of ‘Fast and Frugal’ Heuristics
The total sum of squares and the total degrees of freedoms are disaggregated by calculating in sample variance and "between" sample variance and their respective degrees of freedoms. It is demonstrated numerically that both these measures add up to the total sum of squares and the total degrees of freedom.
ANOVA 2: Calculating SSW and SSB (total sum of squares within and between)
Sheila Dow discusses the concept of radical uncertainty and the failure of neoclassical economics to integrate it into its analysis. As to the implications for financial regulation that arise from the presence of radical uncertainty she argues for institutional overhaul, where the banks see themselves as a licensed partner of the central bank and where rules, values, and conventions would be subject to a cultural shift. Also, Sheila Dow advocates for a renewed focus on retail banking.
The Economics of Uncertainty
Banking 101 is a series of 6 short videos that ask the following questions: How do banks work and how is money created? Is reveals common misunderstandings of money creation and the role of banks. Furthermore, the videos show how models taught in many introductory classes to economics (Econ 101) do not reflect those processes:
Part 1) “Misconceptions around Banking” questions common comprehensions of how banks work (savings = investments).
Part 2) “What's wrong with the money multiplier” states that the model of the money multiplies is inaccurate.
Part 3) “How is money really made by banks” explains the process of money creation, loans and inter-bank settlement.
Part 4) “How much money banks create?” asks what limits the money creation by banks and presents the difference between reserve ratio, liquidity ration, equity and refers to the inter-bank market.
Part 5) Explores the question if banks create money or just credit and especially refers to credit risks.
Part 6) Explains how money gets destroyed when loans are paid back.
Note: The videos refer to the UK monetary and banking system, some explanations don't apply to other banking systems, e.g. the reserve ratio.
How much money can banks create - Banking 101 (Part 4 of 6)
The notion that the demand and supply side are independent is a key feature of textbook undergraduate economics and of modern macroeconomic models. Economic output is thought to be constrained by the productive capabilities of the economy - the ‘supply-side' - through technology, demographics and capital investment. In the short run a boost in demand may increase GDP and employment due to frictions such as sticky wages, but over the long-term successive rises in demand without corresponding improvements on the supply side can only create inflation as the economy reaches capacity. In this post I will explore the alternative idea of demand-led growth, where an increase in demand can translate into long-run supply side gains. This theory is most commonly associated with post-Keynesian economics, though it has been increasingly recognised in the mainstream literature.
It’s Demand All the Way Down
The core of Georgism is a policy known as the Land Value Tax (LVT), a policy which Georgists claim will solve many of society and the economy’s ills. Georgism is an interesting school of thought because it has the twin properties that (1) despite a cult following, few people in either mainstream or (non-Georgist) heterodox economics pay it much heed; (2) despite not paying it much heed, both mainstream and heterodox economists largely tend to agree with Georgists. I will focus on the potential benefits Georgists argue an LVT will bring and see if they are borne out empirically. But I will begin by giving a nod to the compelling theoretical and ethical dimensions of George’s analysis, which are impossible to ignore.
It’s the Land, Stupid!
Marx’s theory of the falling rate of profit is not only empirically borne out, but the theory he proposed seems to describe accurately how that happens. Furthermore, the whole process is useful for understanding the history of contemporary capitalism.
On the Rate of Profit
In this Ted Talk, Mariana Mazzucato argues against the juxtaposition of the state and entrepreneurial activities. By presenting examples of her research on the relation between innovation and (inclusive) growth, she shows how many innovations were led by states' initiatives. Mazzucato confronts the liberal narrative of the a state that merely provides the frame for the market.
Government - investor, risk-taker, innovator
First some terminology is explained. Then the interpretations of the coefficients and constants of the function are discussed. Afterwards the zero conditional mean assumption regarding the residual is problematized. Lastly, a graphical representation of a regression line is given and the least sum of squared errors is introduced and the equation for the coefficient of the linear function as well as for the intercept is given.
Econometrics // Lecture 2: "Simple Linear Regression" (SLR)
Esther Duflo discusses the fact that in social policy one cannot check the big questions, i.e. whether development assistance as an aggregate is helpful, because there is no counterfactual. She then suggests to focus on smaller questions such as what prevents or incentiveses people from immunizing their kids or whether mosquito bednets should be distributed for free. These questions can be answered by using randomized control trials as in the medical sciences. Thus, she argues, by bringing the experimental method to social policy analysis better decisions as to where allocate funds can be made.
Social experiments to fight poverty
Banking 101 is a series of 6 short videos that ask the following questions: How do banks work and how is money created? Is reveals common misunderstandings of money creation and the role of banks. Furthermore, the videos show how models taught in many introductory classes to economics (Econ 101) do not reflect those processes:
Part 1) “Misconceptions around Banking” questions common comprehensions of how banks work (savings = investments).
Part 2) “What's wrong with the money multiplier” states that the model of the money multiplies is inaccurate.
Part 3) “How is money really made by banks” explains the process of money creation, loans and inter-bank settlement.
Part 4) “How much money banks create?” asks what limits the money creation by banks and presents the difference between reserve ratio, liquidity ration, equity and refers to the inter-bank market.
Part 5) Explores the question if banks create money or just credit and especially refers to credit risks.
Part 6) Explains how money gets destroyed when loans are paid back.
Note: The videos refer to the UK monetary and banking system, some explanations don't apply to other banking systems, e.g. the reserve ratio.
How is money really made by banks? - Banking 101 (Part 3 of 6)
Michael Kalecki famously remarked “I have found out what economics is; it is the science of confusing stocks with flows”. Stock-Flow Consistent (SFC) models were developed precisely to address this kind of confusion. The basic intuition of SFC models is that the economy is built up as a set of intersecting balance sheets, where transactions between entities are called flows and the value of the assets/liabilities they hold are called stocks. Wages are a flow; bank deposits are a stock, and confusing the two directly is a category error. In this edition of the pluralist showcase I will first describe the logic of SFC models – which is worth exploring in depth – before discussing empirical calibration and applications of the models. Warning that there is a little more maths in this post than usual (i.e. some), but you should be able to skip those parts and still easily get the picture.
Stock Flow Consistent Macroeconomics
In this short talk „On Economics“ Ha-Joon Chang, author of the book „Economics: The User's Guide“, gives a critical wrap-up on the economic discipline – on what is perceived as economics, what are dominant paradigms, the role of numbers and economics in public life. He further elaborates on the importance of heterodox schools of thought.
Ha-Joon Chang on Economics
In the keynote speech, Sigrid Stagl argues why it is necessary to include socio-ecological aspects in macoreconomic models. The talk focuses on the ecological necessities, mentioning limits to growth, resource extraction and planetary boundaries. At the end, Stagl shortly presents several current macroeconomic initiatives and models that move towards a a socio-ecological macroeconomics.
Towards a socio-ecological macroeconomics
In this radio interview, Andrew Sayer first outlines some features of neoliberalism and policies that are associated with it. Then a difference between wealth creation via investment and wealth extraction by means of lending money to those deprived of it or by acquiring property such as real estate or financial assets on the secondary market as absentee owner is established. In this context reference is made to J.A. Hobson's concept of "improperty." Finally, there are some words on the power dynamics associated with capitalism and its relation to climate change.
Why We Can’t Afford the Rich
Galbraith first explores the social darwinism of Herbert Spencer and others that served as apology for the highly unequal distribution of wealth in the US at the end of the 19th century and naturalized differences in wealth by appealing to the concept of natural selection of the fittest. Then some instances of the unscrupulous business practices (i.e. robberies) of the American railroad tycoons and other business magnates are recounted. Lastly, Galbraith lines out some of the arguments of Thorstein Veblen, who delegitimized and ridiculed the business and leisure activities of the rich by putting them in the same category as predatory and ritualized practices of primitive or ancient societies.
The Age of Uncertainty Episode 2 - The Manners and Morals of High Capitalism
One of the pluralist theories which has gained prominence following the 2008 financial crisis is Hyman Minsky and his Financial Instability Hypothesis (FIH). Minsky was unique in viewing balance sheets and financial flows as the primary components of capitalist economies, and his focus on the financial system meant he was well-equipped for foresee a crisis much like 2008. Although he died long before 2008 his framework anticipated many of the processes which led to the crash, particularly increased risk-taking and financial innovation which would outstrip the abilities of regulators and central banks to manage the system.
Minsky’s Moments
Environmental catastrophe looms large over politics: from the young person’s climate march to Alexandria Ocasio-Cortez’s Green New Deal, increasing amounts of political space are devoted to the issue. Central to this debate is the question of whether economic growth inevitably leads to environmental issues such as depleted finite resources and increased waste, disruption of natural cycles and ecosystems, and of course climate change. Growth is the focal point of the de-growth and zero-growth movements who charge that despite efficiency gains, increased GDP always results in increased use of energy and emissions. On the other side of the debate, advocates of continued growth (largely mainstream economists) believe that technological progress and policies can ‘decouple’ growth from emissions.
To Grow or Not to Grow?
In this keynote lecture during the conference „The Spectre of Stagnation? Europe in the World Economy“, Till van Treek presents research on how changes in income distribution lead to macroeconomic instability and crisis, focusing on currents accounts. Treek presents the relative income hypothesis in contrast to other mainstream and Post-Keynesian explanations. The relative income hypothesis proposes that aggregate demand increases and savings decrease with rising personal income inequality due to upward looking status comparison – but effects depend on the quantile where income inequality increases. Treek points to the importance of accounting for both income and functional income distribution and underlines his arguments with data comparing different pattern in Germany and the U.S.
Macroeconomics of inequality & instability - Inequality, imbalances and the crisis
Economist and politician Costas Lapavitsas: presents differing theoretical definitions of financialization, namely from Marxist and Post-Keynesian thinkers and compares their approaches. By presenting pattern and features of the economic and financial crisis, he interprets the latter as a crisis of financialization. Lapavitsas emphasizes his arguments by presenting data from the U.S. and Germany on the transformation of business, banks and households.
The Financialisation of Capitalism
In this lecture Mirowski claims that a good critique of and alternative to neoclassical economics should focus on microeconomics. In addition, he claims that mainstream economics is not about a specific "human nature", instead the understanding of markets (partially based on Hayek) is of special importance. As an alternative Mirowski proposes institutionalist economics that builds upon how markets work nowadays (e.g. links to computer science).
Should Economists be Experts in Markets or in Human Nature?
Paul Mason presents the main arguments of his book PostCapitalism. First, he argues that capitalism runs out of its capability to adapt to crises and second states that information technology challenges the capitalist system. In a nutshell, he argues that a society which fully exploits information technologies can't include concepts such as intellectual property, free market or private ownership. This has far-reaching consequences for the organisation of wages and work. The talk stops at minute 37.30.
The Future of Capitalism
How countries achieve long-term GDP growth is up there with the most important topics in economics. As Nobel Laureate Robert Lucas put it “the consequences for human welfare involved in questions like these are simply staggering: once one starts to think about them, it is hard to think about anything else.” Ricardo Hausmann et al take a refreshing approach to this question in their Atlas of Economic Complexity. They argue a country’s growth depends on the complexity of its economy: it must have a diverse economy which produces a wide variety of products, including ones that cannot be produced much elsewhere. The Atlas goes into detail on exactly what complexity means, how it fits the data, and what this implies for development. Below I will offer a summary of their arguments, including some cool data visualisations.
GDP Growth: It’s Complicated
What influence do changes in tax policy or state decisions on expenditure have on economic growth? For decades, this question has been controversially debated.
What is the fiscal multiplier and why is it so controversial?
Ha Joon Chang exposes the main ideas of his book Bad Samaritans, namely that historically states have developed and industrialized by making policy interventions related to industry protection, tariffs and subsidies and not by opening their markets to free trade. Chang elaborates on the examples of Japan, the US, Singapore and Germany amongst others to show that an interventionist path to development has been the regularity and not an anomaly. In the end of the lecture, he argues that they idea of a level playing field should be replaced by a trade order that accounts for differences in power and economic capacities of different countries. The last 20 minutes are questions and answers.
Ha-Joon Chang - Bad Samaritans: The Myth of Free Trade and the Secret History of Capitalism
Departing from an analysis of women's employment and changing gender regimes in the pre crisis period, Jill Rubery illustrates how the crisis affects men's and women's employment differently. Afterwards, she discusses the crisis' impact on gender relations. Based on empirical findings, she shows how men were more affected by the recession and women more by austerity and presents possible explanations. Those are furthermore linked to women's employment decisions and prevalent gender regimes. In particular, Rubery discusses cut backs in public spendings on care, flexibilization and the role of conservative gender ideologies.
Economic crisis and austerity: challenges to gender equality
Keen first compares neoclassical approaches to modelling with heterodox ones. Then he discusses in length the required assumptions and the inconsistencies of the aggregate demand and supply model, which is extrapolated from a micro perspective. At the end some dynamic models with feedback mechanisms are shown.
The Mainstream Obsession with Microfoundations and why it is an intellectual dead-end
Even if men were perceived as the main protagonists of the Greek crisis, the crisis had a deep impact on disadvantaged groups, in particular migrant women working as domestic labourers. The debate presents the particular impact on migrant women of the downturn and furthermore discusses how migrant struggles and other emancipatory movements impacted the politics of crisis. The first minutes of the video are in German, but the moderator switches to English.
Invisible women? Crisis, gender and migration in Greece 2015
Economic sociology is an entire subfield and one could write an series on it, so I’m going to stick to probably the most prominent economic sociologist and the founder of ‘new economic sociology’, Mark Granovetter.
Economic Sociology: the Contributions of Mark Granovetter
The most successful multialternative theories of decision making assume that people consider individual aspects of a choice and proceed via a process of elimination. Amos Tversky was one of the pioneers of this field, but modern decision theorists – most notably Neil Stewart – have moved things forward. At the current stage the theories are able to explain a number of strictly ‘irrational’ but reasonable quirks of human decision making, including various heuristics and biases. Not only this, but eye movements of participants strongly imply that the decision-making process depicted in the theories is an accurate one.
The Quirks of Human Decisions, Explained
This multimedia dossier is part of the series „Understanding Finance“ by Finance Watch. The dossier focuses on universal banks – banks that pursue commercial and investment banking and points out several problems of those megabanks, especially in the context of the financial crisis (too big to fail).
Splitting megabanks?
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