Talk:Endogenous growth theory

message: The article is close to useless, because there is no clear definition of y and k, nor of the functions. I have tried to fix it.
This should be elaborated upon. Most endogenous growth theories DO predict non-convergence although I guess some folks may feel that they don't do this in a satisfactory way. The article also states something along the lines of "it is generally felt" which is wishy washy and needs some citations.radek 05:12, 24 January 2007 (UTC)
thread_title: Critics

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thread_title: Fair use rationale for Image:Pyat rublei 1997.jpg

message: This article needs to rewritten. It reads like it was created by an under-graduate with only minimal knowledge of the subject. If anyone wants to help out contact me on my talk page or here. MartinDK 17:04, 14 July 2007 (UTC)
thread_title: Rewrite

message: The article contains this statement:
The main implication of recent growth theory is that policies which embrace openness, competition, change and innovation will promote growth. Conversely, policies which have the effect of restricting or slowing change by protecting or favouring particular industries or firms are likely over time to slow growth to the disadvantage of the community.
This is very contentious.  In fact in development economics there is a strong train of thought that policies to encourage LDCs to 
"embrace openness, competition, change and innovation" is in fact a policy that acts (intentionally or not) to inhibit their development to the advantage of more developed countries.
See http://www.paecon.net/PAEtexts/Chang1.htm and the book "Putting Development First: The Importance of Policy Space in the WTO and IFIs" edited by Kevin P. Gallagher http://www.bu.edu/ir/faculty/gallagher.html  Worik (talk) 20:38, 15 February 2009 (UTC)
thread_title:  Statement about <em> recent growth theory </em> 

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thread_title:  Look out for possible copyright violations in this article 

message: ...
This para >
The initial research was based on the work of Kenneth Arrow (1962), Hirofumi Uzawa (1965), and Miguel Sidrauski (1967).[2] Paul Romer (1986), Lucas (1988),[3] and Rebelo (1991)[4][5] omitted technological change. Instead, growth in these models was due to indefinite investment in human capital which had spillover effect on economy and reduces the diminishing return to capital accumulation.[6]
> Missing name between [4][5] ?
> Missing start of sentence, after [5] ?
Avaiki (talk) 13:46, 20 January 2012 (UTC)
replies: text: The sentence makes sense, so perhaps no part of it is missing. [4][5] could be two refs for the same name? Jonpatterns (talk) 19:27, 2 June 2015 (UTC)
thread_title:  + Look out for possible missing bits? 

message: There is an draft article Draft:Romer_Model. Should this draft be fleshed out into its own article and released into main name space, or would it be better to merge contents into this article, or none of the above?Jonpatterns (talk) 19:27, 2 June 2015 (UTC)
thread_title: Romer Model

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*Reference : Monisankar Bishnu & Chetan Ghate & Pawan Gopalakrishnan, 2013. "Factor income taxation, growth, and investment specific technological change," Indian Statistical Institute, Planning Unit, New Delhi Discussion Papers 13-04, Indian Statistical Institute, New Delhi, India.
ExpertIdeasBot (talk) 16:31, 19 May 2016 (UTC)
thread_title:  Dr. Ghate's comment on this article 

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*Reference 2: Chen, Yan & Zhang, Yan, 2009. "Endogenous income taxes in OLG economies: A clarification," MPRA Paper 16824, University Library of Munich, Germany.
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thread_title:  Dr. Gomes's comment on this article 

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*Reference : Mauro Bambi, 2006. "Endogenous growth and time to build: the AK case," Computing in Economics and Finance 2006 77, Society for Computational Economics.
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thread_title:  Dr. Bambi's comment on this article 

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thread_title:  Dr. Prettner's comment on this article 

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ExpertIdeasBot (talk) 20:16, 24 September 2016 (UTC)
thread_title:  Dr. Etro's comment on this article 

message: I agree with Dr. Etro. This article is too concentrated on Romer's growth theory. Howitt differentiate the first and second generations among the New Growth Theory. Romer and Lucus belong to the the first generation, whereas Schumpeterian growth theory and evolutionary growth theory comprises the second generation. 
The long citation from Howitt is not exact. The original text is in the conclusion in
Peter Howitt (2007) Innovation, Competition and Growth: A Schumpeterian Perspective on Canada's Economy. C.D. Howe InstituteCommentary No. 246, (April) 2007. The text appears in page 13.
I do not correct it now, because it will be necessary to restructure at least some part of the article. Howitt is rather critical to the first generation New Growth Theory. It is necessary to first describe the difference of two generations and put the citation in a correct place.Anthro-apology (talk) 12:29, 16 November 2016 (UTC)
thread_title: Comment on Dr. Etro's opinion 

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*Reference : Pedro Mazeda Gil & Fernanda Figueiredo, 2010. "Firm Size Distribution under Horizontal and Vertical R&D," FEP Working Papers 389, Universidade do Porto, Faculdade de Economia do Porto.
ExpertIdeasBot (talk) 11:14, 22 December 2016 (UTC)
thread_title:  Dr. Gil's comment on this article 

message: Hello fellow Wikipedians,
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message: The section on the "AK model" refers to "Figure 1.1", which does not appear in the article, and it's not obvious where it appears.  Moreover that entire section is confusing, including many terms that are not defined in addition to the phantom Figure 1.1.  Since there is a separate complete article on the "AK model", I will replace this section with the following from the article on the AK model:  
:The AK model production function is a special case of a Cobb–Douglas function with constant returns to scale.
:: Y=AK^aL^{1-a}\,
:This equation shows a Cobb–Douglas function where Y represents the total production in an economy. A represents total factor productivity, K is capital, L is labor, and the parameter a measures the output elasticity of capital. For the special case in which a = 1, the production function becomes linear in capital and does not have the property of decreasing returns to scale in the capital stock, which would prevail for any other value of the capital intensity between 0 and 1.
=== The following is what I deleted, included here to make it easier for someone to restore some of it either here or on the AK model article:  === 
The AK model works on the property of absence of diminishing returns to capital. The simplest form of production function with non-diminishing return is:
:Y = AK\,
where
: A\, , is a positive constant that reflects the level of the technology.
: K \, capital (broad sense to include human capital)
Now, assume output per capita be determined by the constant A>0\,
:y = Ak\, ,
k = capital per worker 
y = output/income per worker
If \frac{f(k)}{k}=A \, is substituted in the equation of transitional Dynamics of Solow-Swan model (exogenous growth model), and f(k) is the output function per worker, how an economy’s per capita incomes converges toward its own steady-state value, to the per capita incomes of other nations, can be seen.
The transitional dynamics equation, in which the growth rate on  k\, is given by
:\gamma_K=\dot{k}/k = s\frac{f(k)}{k} - (n+\delta)\ ,
on substituting  A\,, this is gotten:
:\gamma_K= sA -(n+\delta)\ ,
The case of zero technological progress,  x=0\,, is returned to because per capita growth can now occur in the long-run even without exogenous technological change. The figure 1.1 explains the perpetual growth, with exogenous technical progress. The vertical distance between the two line,  sA\,and n+δ gives the\gamma_K\,
As,  sA>\, n+δ, so that\gamma_K > 0\,. Since the two line are parallel, \gamma_K\,is constant; in particular, it is independent of K\,. In other words,K\, always grows at steady states rate,\gamma_K^*= sA -(n+\delta)\ ,.
Since
:y = AK\,,\gamma_K\, equals \gamma_K^*\,
at every point of time. In addition, since
:c= (1-s) y\,,
the growth rate of
:c\, equals \gamma_K^*\,.
Hence, the entire per capita variable in the model grows at same rate, given by
:\gamma^*= sA -(n+\delta)\ ,
However, y = AK\, technology displays a positive long-run per capita growth without any exogenous technological development. The per capita growth depends on behavioural factors of the model as the saving rate and population. It is unlike neoclassical model, which is higher saving, s, promotes higher long-run per capita growth \gamma^*\,.
DavidMCEddy (talk) 17:13, 10 October 2018 (UTC)
thread_title:  AK model and Figure 1.1 

message: The AK model works on the property of absence of diminishing returns to capital. The simplest form of production function with non-diminishing return is:
:Y = AK\,
where
: A\, , is a positive constant that reflects the level of the technology.
: K \, capital (broad sense to include human capital)
Now, assume output per capita be determined by the constant A>0\,
:y = Ak\, ,
k = capital per worker 
y = output/income per worker
If \frac{f(k)}{k}=A \, is substituted in the equation of transitional Dynamics of Solow-Swan model (exogenous growth model), and f(k) is the output function per worker, how an economy’s per capita incomes converges toward its own steady-state value, to the per capita incomes of other nations, can be seen.
The transitional dynamics equation, in which the growth rate on  k\, is given by
:\gamma_K=\dot{k}/k = s\frac{f(k)}{k} - (n+\delta)\ ,
on substituting  A\,, this is gotten:
:\gamma_K= sA -(n+\delta)\ ,
The case of zero technological progress,  x=0\,, is returned to because per capita growth can now occur in the long-run even without exogenous technological change. The figure 1.1 explains the perpetual growth, with exogenous technical progress. The vertical distance between the two line,  sA\,and n+δ gives the\gamma_K\,
As,  sA>\, n+δ, so that\gamma_K > 0\,. Since the two line are parallel, \gamma_K\,is constant; in particular, it is independent of K\,. In other words,K\, always grows at steady states rate,\gamma_K^*= sA -(n+\delta)\ ,.
Since
:y = AK\,,\gamma_K\, equals \gamma_K^*\,
at every point of time. In addition, since
:c= (1-s) y\,,
the growth rate of
:c\, equals \gamma_K^*\,.
Hence, the entire per capita variable in the model grows at same rate, given by
:\gamma^*= sA -(n+\delta)\ ,
However, y = AK\, technology displays a positive long-run per capita growth without any exogenous technological development. The per capita growth depends on behavioural factors of the model as the saving rate and population. It is unlike neoclassical model, which is higher saving, s, promotes higher long-run per capita growth \gamma^*\,.
DavidMCEddy (talk) 17:13, 10 October 2018 (UTC)
thread_title:  The following is what I deleted, included here to make it easier for someone to restore some of it either here or on the [[AK model]] article: