Cambridge capital controversy
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The Cambridge capital controversy, sometimes called "the capital controversy"[1] or "the two Cambridges debate",[2] was a dispute between proponents of two differing theoretical and mathematical positions in economics that started in the 1950s and lasted well into the 1960s. The debate concerned the nature and role of capital goods and a critique of the neoclassical vision of aggregate production and distribution.[3] The name arises from the location of the principals involved in the controversy: the debate was largely between economists such as Joan Robinson and Piero Sraffa at the University of Cambridge in England and economists such as Paul Samuelson and Robert Solow at the Massachusetts Institute of Technology, in Cambridge, Massachusetts, United States.
The English side is most often labeled "
Most of the debate is
Background
In
The so-called natural rate of economic growth is defined as the sum of the growth of the
If the natural rate of growth is not exogenously given, but is endogenous to
Harrod produced a mathematical model of growth whereby the natural rate of growth fulfills two important functions. First, it sets the ceiling to the divergence between the actual growth rate and warranted growth rate[note 3] and turns cyclical growth into slumps. Consequently, it is important for generating cyclical behavior in trade-cycle models that rely on first-order difference equations. Second, it ostensibly provides the maximum attainable long-run rate of growth.[note 4] The natural rate is treated as strictly exogenous; it is shaped by the growth of the labor force and the growth of labor productivity, without recognition nor assumption that both might be endogenous to demand.[note 5] Additionally, there was no fiscal or other economic mechanism in the theory that could bring the warranted rate of growth in line with the natural rate of growth, i.e. for society to achieve full or fuller utilization of its resources.
Central issue
The question of whether the natural growth rate is exogenous, or endogenous to demand (and whether it is input growth that causes output growth, or vice versa), lies at the heart of the debate between neoclassical economists and Keynesian/post-Keynesian economists. The latter group argues that growth is primarily demand-driven because growth in the labor force as well as in labor productivity both respond to the pressure of demand, both domestic and foreign. Their view does not mean, post-Keynesians state, that demand growth determines supply growth without limit; rather, they claim that there is not one, single, full-employment growth path, and that, in many countries, demand constraints (related to excessive inflation and balance of payments difficulties) tend to arise long before supply constraints are ever reached.[6]
Modelling
The Harrod–Domar model
Roy Harrod, in his seminal paper,
According to the Harrod–Domar model there are three kinds of growth: the rate of warranted growth; the rate of actual growth; and the natural rate of growth. Warranted growth-rate is the rate of growth at which the economy does not expand indefinitely or go into
Neoclassical economists claimed shortcomings in the Harrod–Domar model, in particular pointing out instability in its solution,[10] and, by the late 1950s, they started an academic dialogue that led to the development of the Solow–Swan model.[11]
The Solow–Swan model
The model was developed separately and independently by
The post-Keynesian theory of growth
Post-Keynesian economists, such as Nicholas Kaldor, Luigi Pasinetti, Richard Kahn, and Joan Robinson, proposed a different model of growth. In their approach, the warranted rate of growth is brought into equality with the natural rate of growth by adjustments to income distribution. Although Kaldor and Pasinetti, for example, differed in how to justify this, the rate of profits is the quotient of the rate of growth and the ratio of the savings rate out of profits. This equation is known as the Cambridge equation. Investment, as in Keynes, is taken as an independent variable, and savings adjust to investment.
The debate
The Harrod–Domar model's lack of a mechanism that could bring the warranted rate of growth into line with the natural rate of growth triggered the growth debate in the mid-1950s, a debate that "engaged some of the greatest minds in the economics profession for over two decades."
Both camps generally treated the natural rate of growth as given. Virtually all the focus of the debate centered on the potential mechanisms by which the warranted growth rate might be made to converge on the natural rate, giving a long-run, equilibrium growth-path. The American Cambridge side focused on adjustments to the capital/output ratio through capital-labour substitution if capital and labour were growing at different rates. The English Cambridge side concentrated on adjustments to the saving ratio through changes in the distribution of income between wages and profits, on the assumption that the propensity to save out of profits is higher than out of wages.[6]
Ideological issues
Much of the emotion behind the debate arose because the technical criticisms of marginal productivity theory were connected to wider arguments with ideological implications. The famous neoclassical economist John Bates Clark saw the equilibrium rate of profit (which helps to determine the income of the owners of capital goods) as a market price determined by technology and the relative proportions in which the "factors of production" are used in production. Just as wages are the reward for the labor that workers do, profits are the reward for the productive contributions of capital: thus, the normal operations of the system under competitive conditions pay profits to the owners of capital. Responding to the "indictment that hangs over society" that it involves "exploiting labor," Clark wrote:
It is the purpose of this work [his 1899 'Distribution of Wealth'] to show that the distribution of the income of society is controlled by a natural law, and that this law, if it worked without friction, would give to every agent of production the amount of wealth which that agent creates. However wages may be adjusted by bargains freely made between individual men [i.e., without labor unions and other "market imperfections"], the rates of pay that result from such transactions tend, it is here claimed, to equal that part of the product of industry which is traceable to the labor itself; and however interest [i.e., profit] may be adjusted by similarly free bargaining, it naturally tends to equal the fractional product that is separately traceable to capital.[15]
These profits are in turn seen as rewards for saving, i.e., abstinence from current consumption, which leads to the creation of the capital goods. (Later, John Maynard Keynes and his school argued that saving does not automatically lead to investment in tangible capital goods.) Thus, in this view, profit income is a reward for those who value future income highly and are thus willing to sacrifice current enjoyment. Strictly speaking, however, modern neoclassical theory does not say that capital's or labor's income is "deserved" in some moral or normative sense.
Some members of the
The aggregation problem
In neoclassical economics, a production function is often assumed, for example,
where Q is output, A is factor representing technology, K is the sum of the value of capital goods, and L is the labor input. The price of the homogeneous output is taken as the numéraire, so that the value of each capital good is taken as homogeneous with output. Different types of labor are assumed reduced to a common unit, usually unskilled labor. Both inputs have a positive impact on output, with diminishing marginal returns.
In some more complicated
This vision produces a core proposition in textbook
Piero Sraffa and Joan Robinson, whose work set off the Cambridge controversy, pointed out that there was an inherent measurement problem in applying this model of income distribution to capital. Capitalist income (total profit or property income) is defined as the rate of profit multiplied by the amount of capital, but the measurement of the "amount of capital" involves adding up quite incomparable physical objects – adding the number of trucks to the number of lasers, for example. That is, just as one cannot add heterogeneous "apples and oranges," we cannot simply add up simple units of "capital." As Robinson argued, there is no such thing as "leets," an inherent element of each capital good that can be added up independent of the prices of those goods.
Sraffian presentation
Neoclassical economists assumed that there was no real problem here. They said: just add up the money value of all these different capital items to get an aggregate amount of capital (while correcting for inflation's effects). But Sraffa pointed out that this financial measure of the amount of capital is determined partly by the rate of profit. This is a problem because neoclassical theory tells us that this rate of profit is itself supposed to be determined by the amount of capital being used. There is circularity in the argument. A falling profit rate has a direct effect on the amount of capital; it does not simply cause greater employment of it.
In very simple terms, suppose that capital currently consists of 10 trucks and 5 lasers. Trucks are produced and sold for $50,000 each, while each laser goes for $30,000. Thus, the value of our capital equals the sum of (price)*(quantity) = 10*$50,000 + 5*$30,000 = $650,000 = K.
As noted, this K can change if the rate of profit rises. To see this, define the price of production for the two types of capital goods. For each item, follow the type of pricing rule used by Classical economics for produced items, where price is determined by explicit costs of production:
- P = (labor cost per unit) + (capital cost per unit)*(1 + r)
Here, P is the price of an item and r is the rate of profit. Assume that the owners of the factories are rewarded by receiving income proportional to the capital that they advanced for production (with the proportion being determined by the profit rate). Assume that the labor cost per unit equals W in each sector (and does not change). Both r and W are assumed to be equalized between sectors due to competition, i.e., the mobility of capital and labor between sectors.
Note that this
Further, this formulation does not treat the rate of profit as a price determined by supply and demand. Rather, it fits more with
Go back to the pricing formula above. As in the real world, the capital intensity of production (capital cost per unit) differs between the sectors producing the different types of capital goods. Suppose that it takes twice as much capital per unit of output to produce trucks than it does to produce lasers, so that the capital cost per unit equals $20,000 for trucks (T) and $10,000 for lasers (L), where these coefficients are initially assumed not to change. Then,
- PT = W + $20,000*(1 + r)
- PL = W + $10,000*(1 + r)
If W = $10,000 and r = 1 = 100% (an extreme case used to make the calculations obvious), then PT = $50,000 and PL = $30,000, as assumed. As above, K = $650,000.
Now, suppose that r falls to zero (another extreme case). Then PT = $30,000 and PL = $20,000, so that the value of the capital equals 10*$30,000 + 5*$20,000 = $400,000. The value of K thus varies with the rate of profit. Note that it does not vary in proportion as with a general inflation or deflation that changes both prices by the same percentage: the exact result depends on the relative "capital intensity" of the two sectors.
This result is not changed by the fact that for both items, the capital cost per unit would change as the two prices change (contrary to the assumption made above). Nor does it change if the wage rate and labor cost per unit (W) change.
Also, an obvious riposte is that we can aggregate capital simply by using the first set of prices and ignoring the second, as with many inflation corrections. This does not work, however, because the variation of the rate of profit is theorized as happening at a specific point in time in purely mathematical terms rather than as part of an historical process. The point is that if neoclassical conceptions do not work at a specific time (statics), they cannot handle the more complicated issues of dynamics. This critique of the neoclassical conception is more of a matter of pointing out its major technical flaws in the theory than of presenting an alternative.
In general, this discussion says that the distribution of income (and r) helps determine the measured amount of capital rather than being solely determined by that amount. It also says that physical capital is heterogeneous and cannot be added up the way that financial capital can. For the latter, all units are measured in money terms and can thus be easily summed. Even then, of course, the price of a sum of financial capital varies with interest rates.
Sraffa suggested an aggregation technique (stemming in part from Marxian economics) by which a measure of the amount of capital could be produced: by reducing all machines to a sum of dated labor from different years. A machine produced in the year 2000 can then be treated as the labor and commodity inputs used to produce it in 1999 (multiplied by the rate of profit); and the commodity inputs in 1999 can be further reduced to the labor inputs that made them in 1998 plus the commodity inputs (multiplied by the rate of profit again); and so on until the non-labor component was reduced to a negligible (but non-zero) amount. Then you could add up the dated labor value of a truck to the dated labor value of a laser.
However, Sraffa then pointed out that this accurate measuring technique still involved the rate of profit: the amount of capital depended on the rate of profit. This reversed the direction of causality that neoclassical economics assumed between the rate of profit and the amount of capital. Further, Sraffa showed that a change in the rate of profit would change the measured amount of capital, and in highly nonlinear ways: an increase in the rate of profit might initially increase the perceived value of the truck more than the laser, but then reverse the effect at still higher rates of profit. See "Reswitching" below. The analysis further implies that a more intensive use of a factor of production, including other factors than capital, may be associated with a higher, not lower price, of that factor.
According to the Cambridge, England, critics, this analysis is thus a serious challenge, particularly in factor markets, to the neoclassical vision of prices as indices of scarcity and the simple neoclassical version of the principle of substitution.
General equilibrium presentation
A different way to understand the aggregation problem does not involve the Classical pricing equations. Think about a decrease in the r, the return on capital (corresponding to a rise in w, the wage rate, given that initial levels of capital and technology stay constant). This causes a change in the distribution of income, the nature of the various capital goods demanded, and thus a change in their prices. This causes a change in the value of K (as discussed above). So, again, the rate of return on K (i.e., r) is not independent of the measure of K, as assumed in the neoclassical model of growth and distribution. Causation goes both ways, from K to r and from r to K. This problem is sometimes seen as analogous to the Sonnenschein–Mantel–Debreu results (e.g., by Mas-Colell 1989) in general equilibrium theory, which shows that representative agent models cannot be theoretically justified, except under restrictive conditions (see Kirman, 1992 for an explanation of the Sonnenschein–Mantel–Debreu results as an aggregation problem). Note that this says that it's not simply K that is subject to aggregation problems: so is L.
Simple mathematical presentation
A third way to look this problem is to remember that many neoclassical economists[
Here, A is a constant (representing technology and the like), K is supposed to represent the stock of capital goods (assumed to be measurable), and L is the amount of labor input. The coefficient a is supposed to represent the technology for this sector i. (Its subscript is left out for convenience.)
The problem is that unless we impose very strong mathematical restrictions, we cannot say that this Cobb–Douglas production function for sector i plus one for sector j (plus that for sector k, etc.) adds up to a Cobb–Douglas production function for the economy as a whole (with K and L being the sum of all of the different sectoral values). In short, for the sum of Cobb–Douglas production functions to equal a Cobb–Douglas, the production functions for all of the different sectors have to have the same values of A and a.
Reswitching
Reswitching means that there is no simple (monotonic) relationship between the nature of the techniques of production used and the rate of profit. For example, we may see a situation in which a technique of production is cost-minimizing at low and high rates of profits, but another technique is cost-minimizing at intermediate rates.
Reswitching implies the possibility of capital reversing, an association between high interest rates (or rates of profit) and more capital-intensive techniques. Thus, reswitching implies the rejection of a simple (monotonic) non-increasing relationship between capital intensity and the rate of profit, sometimes referred to as the rate of interest. As rates fall, for example, profit-seeking businesses can switch from using one set of techniques (A) to another (B) and then back to A. This problem arises for either a macroeconomic or a microeconomic production process and so goes beyond the aggregation problems discussed above.
In a 1966 article, the famous
- "The phenomenon of switching back at a very low interest rate to a set of techniques that had seemed viable only at a very high interest rate involves more than esoteric difficulties. It shows that the simple tale told by Jevons, Böhm-Bawerk, Wickselland other neoclassical writers — alleging that, as the interest rate falls in consequence of abstention from present consumption in favor of future, technology must become in some sense more 'roundabout,' more 'mechanized' and 'more productive' — cannot be universally valid." ("A Summing Up," Quarterly Journal of Economics vol. 80, 1966, p. 568.)
Samuelson gives an example involving both the Sraffian concept of new products made with labor employing capital goods represented by dead or "dated labor" (rather than machines having an independent role) and Böhm-Bawerk's concept of "roundaboutness" — supposedly a physical measure of capital intensity.
Instead of simply taking a neoclassical production function for granted, Samuelson follows the Sraffian tradition of constructing a production function from positing alternative methods to produce a product. The posited methods exhibit different mixes of inputs. Samuelson shows how profit maximizing (cost minimizing) indicates the best way of producing the output, given an externally specified wage or profit rate. Samuelson ends up rejecting his previously held view that heterogeneous capital could be treated as a single capital good, homogeneous with the consumption good, through a "surrogate production function".
Consider Samuelson's Böhm-Bawerkian approach. In his example, there are two techniques, A and B, that use labor at different times (–1, –2, and –3, representing years in the past) to produce output of 1 unit at the later time 0 (the present).
time period | input or output | technique A | technique B |
---|---|---|---|
–3 | labor input | 0 | 2 |
–2 | 7 | 0 | |
–1 | 0 | 6 | |
0 | output | 1 | 1 |
Then, using this example (and further discussion), Samuelson demonstrates that it is impossible to define the relative "roundaboutness" of the two techniques as in this example, contrary to Böhm-Bawerkian assertions. He shows that at a profit rate above 100 percent technique A will be used by a profit-maximizing business; between 50 and 100 percent, technique B will be used; while at an interest rate below 50 percent, technique A will be used again. The interest-rate numbers are extreme, but this phenomenon of reswitching can be shown to occur in other examples using more moderate interest rates.
The second table shows three possible interest rates and the resulting accumulated total labor costs for the two techniques. Since the benefits of each of the two processes is the same, we can simply compare costs. The costs in time 0 are calculated in the standard economic way, assuming that each unit of labor costs $w to hire:
where L–n is the amount of labor input in time n previous to time 0.
interest rate | technique A | technique B |
---|---|---|
150% | $43.75 | $46.25 |
75% | $21.44 | $21.22 |
0% | $7.00 | $8.00 |
The results in bold-face indicate which technique is less expensive, showing reswitching. There is no simple (monotonic) relationship between the interest rate and the "capital intensity" or roundaboutness of production, either at the macro- or the microeconomic level of aggregation.
Standpoints
Naturally enough, the two contending schools arrive at different conclusions concerning this debate. It is useful to quote some of these.
Sraffian views
Here are some of the Cambridge critics' views:
"
long-run equilibria, stability proofsrequire the exclusion of capital reversing (Schefold 1997). In that sense, all neoclassical production models would be affected by capital reversing." (Lavoie 2000)
"These findings destroy, for example, the general validity of
taxation theory applied in environmental economics(as Gehrke and Lager have shown)." (Gehrke and Lager 2000)
Recent work includes empirical applications using input-output data,[17][18] applications to enviromental economics,[19] an analysis of the properties of random matrices,[20] a demonstration that the CCC applies to non-competitive markets with markup pricing,[21] and extensions of work with fixed capital.[22]
Neoclassical views
The neoclassical economist Christopher Bliss comments:
"...what one might call the existential aspect of capital theory has not attracted much interest in the past 25 years. A small band of 'true believers' has kept up the assault on capital theory orthodoxy until today, and from their company comes at least one of my co-editers[sic]. I shall call that loosely connected school the Anglo-Italian theorists. No simple name is ideal, but the one I have chosen indicates at least that the influences of Piero Sraffa and Joan Robinson, in particular, are of central importance. Even in that case, there is a flavour of necrophilia in the air. If one asks the question: what new idea has come out of Anglo-Italian thinking in the past 20 years?, one creates an embarrassing social situation. This is because it is not clear that anything new has come out of the old, bitter debates.
Meanwhile mainstream theorizing has taken different directions. Interest has shifted from general equilibrium style (high-dimension) models to simple, mainly one-good models.
Stiglitz implanted into neoclassical growth modelling did not flourish there. Instead the representative agent is usually now the model's driver. Finally, the exogenous technical progress of Harrod, and most writers on growth from whatever school in the 1960s and later, has been joined by numerous models which make technical progress endogenous in one of the several possible ways......Can the old concerns about capital be taken out, dusted down and addressed to contemporary models? If that could be done, one would hope that its contribution could be more constructive than the mutually assured destruction approach that marred some of the 1960s debates. It is evident that richer models yield richer possibilities. They do not do that in proportion when optimization drives model solutions. However, we know that many-agent models can have multiple equilibria when all agents optimize. There may be fruitful paths forward in that direction.
Old contributions should best be left buried when they involve using capital as a stick to beat marginal theory. All optima imply marginal conditions in some form. These conditions are part of an overall solution. Neither they nor the quantities involved in them are prior to the overall solution. It reflects badly on economists and their keenness of intellect that this was not always obvious to everyone." (Bliss 2005)
In his 1975 book Capital Theory and the Distribution of Income, Bliss showed that in general equilibrium, there is no relationship between relative scarcity of an input and relative price. However, the return to each factor remains equal to its dis-aggregated marginal productivity.[23]
Austrian Views
Austrian economists for the most part dismiss the debate as irrelevant. As various Austrian economists such as Ludwig von Mises,[24] Israel Kirzner,[25] Ludwig Lachmann,[26] and Jesús Huerta de Soto[27] explain, Austrian capital theory is immune to reswitching as a critique, since Austrian economics' subjectivism forbids positing hard physical relationships between roundaboutness and the interest rate. Thus, they reject Böhm-Bawerk's theory of capital (although they adhere to his focus on time-preference as explanatory of interest rates). Instead, they recast roundaboutness in prospective terms, and simply view reswitching as a rare, but possible phenomenon.[28] Austrian school economists hold to their own version of Robinson's aggregation problem, agreeing heterogeneous capital can't be rigorously aggregated.[29] Robert Murphy shows in a general equilibrium model that in a world with heterogeneous capital, interest rates indicate time-preference, but not the marginal productivity of capital.[30] Huerta De Soto[31] argues that reswitching actually benefits Austrian capital theory, but warns:
We must not forget that although neo-Ricardians may have been circumstantial allies to the Austrians in their criticism of the neoclassical trend, the neo-Ricardians’ stated objective is precisely to neutralize the influence (which is not yet strong enough, in our opinion) exerted on economics since 1871 by the subjectivist revolution Menger started. (Huerta De Soto 2006)
Saverio Fratini are unaffected by reswitching.
Marxian Views
Unlike the neoclassicals, who chose to largely turn a blind eye to the Controversies after a brief period of panic, or the Austrians, whose theories (contrary to popular opinion) are almost universally consistent with the possibility of reswitching, the Marxians have displayed a fair bit of concern over the grim implications reswitching has for the logical consistency of Marxian work. The Capital Controversies, like the transformation problem, are another refutation of the labor theory of value,[36] since they showed that the equilibrium rate of profit is not strictly dependent on the capital to labor ratio of a commodity. Marxist economist Eduardo M. Ochoa admits that in theory, the labor theory of value is rendered logically untenable by reswitching, but argues that in practice, reswitching is not empirically likely if you observe wage curves in the US economy.[37]
Conclusion
This article needs additional citations for verification. (September 2009) |
Part of the problem in this debate revolved around the high level of abstraction and idealization that occurs in economic model-building on topics such as capital and economic growth. The original neoclassical models of aggregate growth presented by Robert Solow and Trevor Swan were straightforward, with simple results and uncomplicated conclusions which implied predictions about the real, empirical, world. The followers of Robinson and Sraffa argued that more sophisticated and complicated mathematical models implied that for the Solow–Swan model to say anything about the world, crucial unrealistic assumptions (that Solow and Swan had ignored) must be true.
To choose an example that did not get much attention in the debate (because it was shared by both sides), the Solow–Swan model assumes a continuously-attained equilibrium with 'full employment' of all resources. Contrary to Keynesian economics, saving determines investment in these models (rather than vice versa). The fact that the critique was also stated entirely using exactly the same kind of unrealistic assumptions meant that it was very difficult to do anything but 'criticize' Solow and Swan.
In short, the progress produced by the Cambridge Controversy was from the unrealistic reliance on unstated or unknown assumptions to a clear consciousness about the need to make such assumptions. But this left the Sraffians in a situation where the unreal assumptions prevented most empirical applications, along with further developments of the theory. Thus it is not surprising that Bliss asks: "what new idea has come out of Anglo-Italian thinking in the past 20 years?"
Even though Sraffa, Robinson, and others had argued that its foundations were unfounded, the Solow–Swan growth model based on a single-valued aggregate stock of capital goods has remained a centerpiece of neoclassical
Neoclassical theorists, such as Bliss, (quoted above) have generally accepted the "Anglo-Italian" critique of the simple neoclassical model and have moved on, applying the 'more general' political-economic vision of neoclassical economics to new questions. Some theorists, such as
The critics, such as Pierangelo Garegnani (2008), Fabio Petri (2009), and Bertram Schefold (2005), have repeatedly argued that such models are not empirically applicable and that, in any case, the capital-theoretical problems reappear in such models in a different form. The abstract nature of such models has made it more difficult to clearly reveal such problems in as clear a form as they appear in long-period models.
Since Samuelson had been one of the main neoclassical defenders of the idea that heterogeneous capital could be treated as a single capital good, his article (discussed above) conclusively showed that results from simplified models with one capital good do not necessarily hold in more general models. He thus mostly uses multi-sectoral models of the Leontief–Sraffian tradition instead of the neoclassical aggregate model.
Most often, neoclassicals simply ignore the controversy, while many do not even know about it. Indeed, the vast majority of economics graduate schools in the United States do not teach their students about it:
"It is important, for the record, to recognize that key participants in the debate openly admitted their mistakes. Samuelson's seventh edition of Economics was purged of errors. Levhari and Samuelson published a paper which began, 'We wish to make it clear for the record that the nonreswitching theorem associated with us is definitely false. We are grateful to Dr. Pasinetti...' (Levhari and Samuelson 1966). Leland Yeager and I jointly published a note acknowledging his earlier error and attempting to resolve the conflict between our theoretical perspectives. (Burmeister and Yeager, 1978).
However, the damage had been done, and Cambridge, UK, 'declared victory': Levhari was wrong, Samuelson was wrong, Solow was wrong, MIT was wrong and therefore neoclassical economics was wrong. As a result there are some groups of economists who have abandoned neoclassical economics for their own refinements of classical economics. In the United States, on the other hand,
econometricwork." (Burmeister 2000)
Notes
- ^ Or what Harrod originally termed "the rate of growth of the labor force in efficiency units". See Harrod (1939)
- natural resources. It is the highest attainable growth rate that would bring about the fullest possible employment of the resources existing in the economy. See Harrod (1939)
- entrepreneursto revise their investment plans upwards or downwards. See Dray (2010)
- ^ What Harrod called the "social optimal rate of growth", without discussion of its determinants
- dynamicsaround an "unexplained trend." See Besomi (1998)
- ^ A similar model had been proposed by Gustav Cassel. See Cassel (1924)
- ^ The idea of using a Cobb–Douglas production function at the core of a growth model dates back to Tinbergen (1942, pp. 511–549). See Brems (1986 pp. 362–268)
References
- ^ a b Brems (1975) pp. 369–384
- ^ Piketty (2014) p. 231
- ^ Tcherneva (2011)
- ^ See Classical growth-theory
- ^ Bjork (1999) pp. 2, 67
- ^ a b c d e f Dray et al (2010)
- ^ a b Harrod (1939)
- ^ Domar (1946)
- ^ Hageman (2009)
- ^ Scarfe (1977)
- ^ Sato (1964)
- ^ Solow (1956)
- ^ Swan (1956)
- ^ Acemoglu (1956)
- ^ Schlefer (2012) p. 101
- ^ Albert et al (1990) p.358
- ^ Han & Schefold 2006
- ^ Zambelli 2018
- ^ Hahnel 2017
- ^ Schefold 2023
- ^ Vienneau 2024
- ^ Huang 2019
- ^ Cohen, Avi J. Harcourt. G.C. "Whatever Happened to the Cambridge Capital Theory Controversies?" Journal of Economic Perspectives—Volume 17, Number 1—Winter 2003—Pages 199–214.
- ^ Mises (1949)
- ^ Kirzner (1996)
- ^ Lachmann (1976)
- ^ Huerta De Soto (2006)
- ^ Huerta De Soto (2006)
- ^ Lachmann (1976)
- ^ Murphy (2005)
- ^ Huerta De Soto (2006)
- ^ Fratini (2019)
- ^ Lewin and Cachanosky (2019)
- ^ Mises (1949)
- ^ Huerta De Soto (2006)
- ^ Steedman (1977)
- ^ Ochoa (1989)
Bibliography
- ISBN 978-0-691-13292-1.
- ISBN 978-0691629483
- Benomi, Daniele (1998). "Failing to Win Consent : Harrod's Dynamics in the Eyes of His Readers", Economic Dynamics, Trade and Growth : Essays on Harrodian Themes (G. Rampa, L. Stella, and A. P. Thirlwall editors), London: Palgrave-Macmillan, ISBN 978-1-349-26931-0
- Bjork, Gordon J. (1999). The Way It Worked and Why It Won't: Structural Change and the Slowdown of U.S. Economic Growth. Westport, CT; London: Praeger. ISBN 978-0-275-96532-7.
- Bliss, Christopher (2005). "Introduction, The Theory of Capital: A Personal Overview", in C. Bliss, A. Cohen and G.C. Harcourt (eds.) Capital Theory, (Cheltenham, UK: Edward Elgar), Vol. I, pp. xxvii–lx.
- Brems, Hans (1975). "The capital controversy: A Cambridge, Massachusetts View of Cambridge, England", De Economist, Volume 123, Issue 3
- Brems, Hans (1986). "Neoclassical Growth: Tinbergen and Solow". Pioneering Economic Theory, 1630–1980. Baltimore: Johns Hopkins University Press. pp. 362–368. ISBN 978-0-8018-2667-2.
- Burmeister, Edwin (2000). "The Capital Theory Controversy", Critical Essays on Piero Sraffa's Legacy in Economics (Heinz D. Kurz, editor), Cambridge: Cambridge University Press
- Cassel, Gustav (1967) [1924]. "Capital and Income in the Money Economy" (PDF). The Theory of Social Economy. New York: Augustus M. Kelley. pp. 51–63.
- Cohen, Avi J. & Harcourt, G.C. (2003). "Whatever Happened to the Cambridge Capital Theory Controversies?", Journal of Economic Perspectives, 17(1), pp. 199–214
- Domar, Evsey (1946). "Capital Expansion, Rate of Growth, and Employment" (PDF). JSTOR 1905364.
- Dray, Mark & Thirlwall, A. P. (2010) : "The endogeneity of the natural rate of growth for a selection of Asian countries", Journal of Post Keynesian Economics, Spring 2011, Vol. 33, No. 3
- Fratini, Saverio (2019). "A note on re-switching, the average period of production and the Austrian business-cycle theory". .
- ISBN 978-1-349-08633-7
- Gehrke, Christian and Christian Lager (2000). "Sraffian Political Economy", Encyclopedia of Political Economy, Routledge
- Hagemann, Harald (2009). "Solow's 1956 Contribution in the Context of the Harrod–Domar Model". .
- Hahnel, Robin (2017). Radical Political Economy: Sraffa Versus Marx. London: Routledge
- Han, Zonghie & Bertram Schefold (2006). "An empirical investigation of paradoxes: Reswitching and reverse capital deepening in capital theory". Cambridge Journal of Economics. 30 (5): 737–765.
- Harcourt, G. C. (1972). Some Cambridge Controversies in the Theory of Capital. Cambridge: Cambridge University Press 1972
- Harcourt, G. C. and N.F. Laing (1971). Capital and Growth, Harmondsworth, UK: Penguin
- JSTOR 2225181
- ISBN 978-0198282693.
- Huang, Biao (2019). "Revisiting fixed capital models in the Sraffa framework". Economica Politica. 36: 351–371.
- Huerta De Soto, J. (2006). Money, Bank Credit, and Economic Cycles. Auburn, Alabama, Ludwig Von Mises Institute.
- Kirman, Alan P. (1992). "Whom or What does the Representative Individual Represent?" Journal of Economic Perspectives 6(2), 117–136
- Kirzner, I.M., 1996. Essays on Capital and Interest. Edward Elgar Publishing.
- Kurz, Heinz D. (1987). "capital theory: paradoxes, The New Palgrave: A Dictionary of Economics, London and New York: Macmillan and Stockton, pp. 359–363
- Kurz, Heinz D. and Neri Salvadori (1995) Theory of Production: A Long-Period Analysis, Cambridge University Press.
- Lachmann, L. M. (1976). On Austrian Capital Theory.
- Lavoie, Marc (2000). "Capital Reversing", Encyclopedia of Political Economy, Routledge
- Lebowitz, Michael (2009). "Another Crisis of Economic Theory: The Neo-Ricardian Critique", Following Marx: Method, Critique and Crisis, Leiden & Boston: Brill, 2009, ISBN 978-1608460335
- Lewin, P. and Cachanosky, N. (2019). Capital and Finance: Theory and History
- Mises, L. v. (1949). Human Action: A Treatise on Economics. Mansfield Centre: Martino Publishing.
- Murphy, R. P. (2005). DANGERS OF THE ONE-GOOD MODEL:BOHM-BAWERK’S CRITIQUE OF THE“NAIVE PRODUCTIVITY THEORY OF INTEREST”
- Ochoa, E. M. (1989) Values, prices, and wage-profit curves in the US economy.
- Opocher, Arrigo and Ian Steedman (2015) Full Industry Equilibrium: A Theory of the Industrial Long Run, Cambridge University Press.
- Pasinetti, Luigi (1977) Lectures on the Theory of Production, Columbia University Press.
- New Palgrave: A Dictionary of Economics, London and New York: Macmillan and Stockton, pp. 363–68.
- Petri, Fabio (2009) "On the Recent Debate on Capital Theory and General Equilibrium", Economic Department of the University of Siena
- ISBN 978-0674430006
- Samuelson, Paul(1987). "Sraffian economics," The New Palgrave: A Dictionary of Economics, v. 3, pp. 452–460.
- JSTOR 2228485.
- Scarfe, Brian L. (1977). "The Harrod Model and the 'Knife Edge' Problem". Cycles, Growth, and Inflation: A Survey of Contemporary Macrodynamics. New York: McGraw-Hill. pp. 63–66. ISBN 978-0-07-055039-1.
- Schefold, Bertram (1989). Mr. Sraffa on Joint Production and Other Essays, Routledge.
- Schefold, Bertram (1997). Normal Prices, Technical Change and Accumulation. London: Macmillan
- Schefold, Bertram (2005). "Reswitching as a Cause of Instability of Intertemporal Equilibrium", Metroeconomica, Vol. 56, No. 4, pp. 438–476
- Schefold, Bertram (2023). "The rarity of reswitching explained". Structural Change and Economic Dynamics. 67: 128–150.
- Schlefer, Jonathan (2017). The Assumptions Economists Make, Belknap Press: imprint of Harvard University Press; reprint edition, ISBN 978-0674975408
- JSTOR 1884513.
- JSTOR 2138150.
- JSTOR 1837157
- .
- ", Journal of Post Keynesian Economics, Vol. 33, No. 3
- JSTOR 40430851
- Steedman, I. (1977). Marx After Sraffa.
- Vienneau, Robert L. (2024). "Characteristics of labor markets varying with perturbations of relative markups". Review of Political Economy. 36 (2): 827–843.
- Zambelli, Stefano (2018). "The aggregate production function is NOT neoclassical". Cambridge Journal of Economics. 42 (2): 383–426.