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The chi-square distribution is used to test a hypothesis. Therefore, expected values are related to observed values using a chi-square distribution. Then using p-value tables the hypothesis is tested at a 5% significance level.
Pearson's chi square test (goodness of fit) | Probability and Statistics | Khan Academy
First some properties about the Sum of squared residuals and the linear regression function are restated. In particular three properties that an ideal fitted regression line must fulfill are discussed. Then, the R squared is defined using the measures of the Sum of squared residuals, the total sum of squares and the sum of explained squares.
Econometrics // Lecture 3: OLS and Goodness-Of-Fit (R-Squared)
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
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
Based on a critique on econometric and DSGE models (in particular in the context of the financial crisis), Doyne Farmer presents his current research programme that aims at building an agent-based model of the financial and economic crisis. It models heterogeneous agents and from there simulates the economy, firstly for the housing market. The interview gives a short insight in the research programme.
Macroeconomics From the Bottom Up
First some definitions regarding econometrics, regressions, types of data and independent and dependent variables are given. Then the basic function of a simple regression analysis is explained. Lastly, there is discussion of the meaning of the error term.
Econometrics // Lecture 1: Introduction
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)
In both economics textbooks and public perceptions central banks are a fact of life. On the wall of my A-level economics classroom there was the Will Rogers quote “there have been three great inventions since the beginning of time: fire, the wheel, and central banking”, summarising how many economists view the institution. There is a widespread belief that there is something different about money which calls for a central authority to manage its operation, a view shared even by staunch free marketeers such as Milton Friedman. This belief is not without justification, since money underpins every transaction in a way that apples do not, but we should always be careful not to take existing institutions for granted and central banking is no exception. In this post I will look at the idea of private or free banking, where banks compete (and cooperate) to issue their own currency.
Whither Central Banks?
Exploring Economics, an open-source e-learning platform, giving you the opportunity to discover & study a variety of economic theories, topics, and methods.
A Time for Precaution
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
In the interview, Robert Skidelsky discusses the emergence of political influence of a certain school of economic thought and how the success of an economic theory depends on the power relations in the society. He introduces the historical example of Keynesian economics and its replacement by liberal economic theory and policy in the aftermath of the Great Depression, and transfers this historical case to the dominant paradigm of austerity policies in the Europe as response to rising public debts caused by the Financial Crisis. He contrasts austerity policies with a Keynesian approach. Furthermore, he relates the targets of policy to the underlying power structures, for example when not the reduction of unemployment but the protection of financial capital is politically addressed.
Economics and Political Power during the Crisis
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)
One method of economic modelling that has become increasingly popular in academia, government and the private sector is Agent Based Models, or ABM. These simulate the actions and interactions of thousands or even millions of people to try to understand the economy – for this reason ABM was once described to me as being “like Sim City without the graphics”. One advantage of ABM is that it is flexible, since you can choose how many agents there are (an agent just means some kind of 'economic decision maker' like a firm, consumer, worker or government); how they behave (do they use complicated or simple rules to make decisions?); as well as the environment they act in, then just run the simulation and see what happens as they interact over time.
Agents, agents everywhere
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
The author identifies three principal economic phenomena, which are explained: long run productivity growth as the central driver of increasing economic activity, short-term and long-term debt cycles. The latter two are explained to some detailed with reference to money creation, central banking and long term crisis tendencies. With regards to the long run debt cycle, which leads into deleveraging and recession, some policy measures which can smoothen the crisis are discussed.
How The Economic Machine Works
Stiglitz answers the question why globalization and world trade has not delivered on its promise of increased well being as much as classical economists thought, by pointing to the power asymmetries: firstly, between industrialized nations and developing nations and secondly, between special corporate interest and social interests. In his analysis, developed countries and MNCs were able to extract the benefits, while shifting the costs (i.e. pollution) to states and communities with lesser power. Amongst many other historical examples the pharmaceutical and the mining industry are discussed to some length.
Stiglitz on globalization, why globalization fails? The trade agreements
This video provides a brief introduction to post-keynesian economics and how the school of thought would tackle climate change.
Clips on Climate: Postkeynesian Economics
In this video University of Warwick Economist Robert Akerlof provides an introduction to a new type of behavioral economics He explains how this type is being driven by a desire to understand how people are shaped by social interactions and what the economic consequences of this are He begins the …
Behavioral Economics: The Next Generation
Poster of the different schools of thought made by Sergio A. Berumen. From the Greeks to late 20th and beginning of the 21th century.
General Guide To Schools Of Economic Thought
This paper starts with an evaluation of three common arguments against pluralism in economics: (1) the claim that economics is already pluralist, (2) the argument that if there was the need for greater plurality, it would emerge on its own, and (3) the assertion that pluralism means ‘anything goes’ and is thus unscientific. Pluralist responses to all three arguments are summarized. The third argument is identified to relate to a greater challenge for pluralism: an epistemological trade-off between diversity and consensus that suggests moving from a discussion about ‘pros’ and ‘cons’ towards a discussion about the adequate degree of plurality. We instantiate the trade-off by showing how it originates from two main challenges: the need to derive adequate quality criteria for a pluralist economics, and the necessity to propose strategies that ensure the communication across different research programs. The paper concludes with some strategies to meet these challenges.
Pluralism in economics: its critiques and their lessons
Does Karl Polanyi's work “The Great Transformation” serve to analyse the current multiple crisis and social movements? Nancy Fraser revises Polanyi's concept of a double movement to capture social forces in the aftermath of the economic crisis of the 1930s – on the one side marketization and on the other hand social protection. Fraser proposes to talk about a triple movement and to account for emancipatory struggles. In the lecture, she discusses interactions as well as conflicts between those three forces, in particular conflicting aims of social protection. The lecture presents the content of her paper “A TRIPLE MOVEMENT? Parsing the Politics of Crisis after Polanyi“ in the New Left Review (2013).
Crisis of Capitalism, Crisis of Governance: Re-reading Karl Polanyi in the 21st Century
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
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
By conducting a discourse analysis (SKAD) in the field of academic economics textbooks, this paper aims at reconstructing frames and identity options offered to undergraduate students relating to the questions ‘Why study economics?’ and ‘Who do I become by studying economics?’. The analysis showed three major frames and respective identity offerings, all of which are contextualized theoretically, with prominent reference to the Foucauldian reflection of the science of Political Economy. Surprisingly, none of them encourages the student to think critically, as could have been expected in a pedagogical context. Taken together, economics textbooks appear as a “total structure of actions brought to bear upon possible action” (Foucault), therefore, as a genuine example of Foucauldian power structures.
The power of economic textbooks: A discourse analysis
The article pursues the two related questions of how economists pretend to know and why they want to know at all. It is argued that both the economic form of knowledge and the motivation of knowing have undergone a fundamental change during the course of the 20th century. The knowledge of important contemporary economic textbooks has little in common with an objective, decidedly scientifically motivated knowledge. Rather, their contents and forms follow a productive end, aiming at the subjectivity of their readers.
An essay on the putative knowledge of textbook economics
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
In this lecture, Konstantinos Katsikopoulos presents the concept of bounded rationality and contrasts two - as he calls it - cultures of research and analysis within Behavioral Economics: an "idealistic" and a "pragmatic" approach. Thereby, Katsikopoulos discusses amongst others their different assumptions on decision making (utility optimization vs. achievement of a satisfactory outcome), the psychological process as well as the epistemic aim and implications on policy recommendations (nudging vs. education).
Bounded Rationality: The Two Cultures
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