Effects of Patent Protection on Optimal Corporate Income and Consumption Taxes in an R&D‐Based Growth Model

Does reducing the corporate income tax accompanied by an increase in the consumption tax to meet the government's budget constraint improve welfare? To respond, we examine the welfare‐maximizing corporate income tax and consumption tax rates in an R&D‐based growth model under the constraint that the government's budget is balanced at each point of time. Further, we consider how welfare‐maximizing tax rates change as patent protection becomes stronger, as seen in many countries. The results show that as patent protection becomes stronger, the corporate income tax rate should be higher and the consumption tax rate should be lower. This implies that under stronger patent protection, recovering production at the expense of innovation by raising corporate income tax and reducing consumption tax improves welfare.     

Patent Protection and Strategic Delays in Technology Development: Implications for Economic Growth

We present an endogenous growth model in which both the investment to develop a new technology—that upgrades the quality of machines—and entry of imitators are determined endogenously. According to the model, how soon the new‐technology machine is launched after the patent is granted is influenced by two factors: returns to scale in technology development and “strategic delays.” Strategic delays in technology development are most likely to occur when earlier dates of success enable imitators to enter an industry, that is, when imitation is swift and relatively cheap and/or patent protection is relatively lengthy. We then explore the link between the optimal patent length and economic growth and find that the equilibrium investment in technology development and thus the expected rate of technological progress exhibit an inverted U‐shape relationship with respect to the legal patent length.     

Patentability and Knowledge Spillovers of Basic R&D

This study develops a research and development (R&D)–based growth model with basic and applied research to analyze the growth and welfare effects of two patent instruments: (i) the patentability of basic R&D and (ii) the division of profit between basic and applied researchers. We find that for the purpose of stimulating basic R&D and economic growth simultaneously, increasing the share of profit assigned to basic researchers is more effective than raising the patentability of basic R&D, which has either a negative effect or an inverted‐U effect on technological progress. However, a benevolent patent authority requires both patent instruments to achieve the socially optimal allocation in the decentralized economy.     

创造性破坏与县域经济增长

创造性破坏是县域经济增长的引擎和持续动力。文章立足于县域企业创造性破坏频率过低、结构失衡和质量不高的现状,提出了寻求最佳创新模式、整合内外优势资源、构建产业集群创新网络是提高县域企业创造性破坏程度、推动县城经济持续增长的科学选择。     

Endogenous Research and Development and Intellectual Property Laws in Developed and Emerging Economies

The incentive of providing protection of intellectual property has been analyzed both for an emerging economy and for a developed economy. The optimal patent length and the optimal patent breadth within a country are found to be positively related to each other for a fixed structure of laws abroad. Moreover, a country can respond to stronger patent protection abroad by weakening its patent protection under certain circumstances and by strengthening its patent protection under other circumstances. These results depend on the curvature of the research‐and‐development production function. Finally, we investigate the impact of an increase in the willingness to pay in the emerging economy and find conditions under which there is an improvement in both patent length and patent breadth in the emerging economy.     

On the trade,growth, and welfare effects of intellectual property rights protection

To examine how intellectual property rights protection affects trade, growth, and welfare, I develop a two-country R&D-based growth model in which final goods firms in both countries determine the range of imported varieties in the overall use of intermediate inputs. I show that strengthening patent protection in either country increases the range of imported varieties of intermediate goods and stimulates economic growth in the country that strengthened patent protection. Moreover, I also show that the Nash equilibrium level of patent protection is stronger than the globally optimal level of patent protection.     

Piracy,Imitation, and Optimal Copyright Policy

This article presents a model of optimal copyright policy which incorporates several realistic features which have hitherto been largely ignored. First, although copyright is understood as a means of encouraging the creation of new works, the optimal number of such works is generally not considered. Second, copyright infringement encompasses two different activities subsumed under the same legal umbrella: One might either “pirate” (i.e., illegally copy) a work or one might create a “new” work which is a close imitation of an existing one. The mutual recognition of these two features leads to some surprising conclusions relevant to current debate over copyright reform. In particular, while strong piracy protection encourages overproduction of intellectual property, enhanced protection against imitation can mitigate the associated inefficiencies, benefitting society.     

The Dynamics of Knowledge Diversity and Economic Growth

How is long run economic growth related to the endogenous diversity of knowledge? We formulate and study a microeconomic model of knowledge creation, through the interactions among a group of heterogeneous research and development (R&D) workers, embedded in a growth model to address this question. The composition of the research work force in terms of knowledge heterogeneity, in addition to its size, matters in determining the production of new knowledge. Moreover, the heterogeneity of the work force is endogenous. Income to these workers accrues as patent income, whereas transmission of newly created knowledge to all such workers occurs due to public transmission of patent information. Whether or not the system reaches the most productive state depends on the strength of the public knowledge transmission technology. Long run economic growth is positively related to both the effectiveness of pairwise R&D worker interaction and to the effectiveness of public knowledge transmission.     

Re‐Examining the Role of Structural Change and Nonlinearities in a Phillips Curve Model for South Africa

Although studies generally find evidence of a Phillips curve‐type relationship in South Africa, uncertainty remains about the relevance of the model over a relatively long sample period, and whether conventional output gap measures are suitable proxies for demand pressure. This paper reviews research which shows that the Phillips curve model prevails over an extended sample, provided that the benchmark specifications include major structural changes in the balance‐of‐payments and labour market, and account for shifts in the root causes of inflation. When this is done, a linear specification with an output gap in levels correctly predicts the non‐trended inflation pattern over the period 1971(Q1)–1984(Q4), whereas a piecewise concave curve with an output gap in growth rates accurately forecasts the decelerating inflation pattern during 1986(Q1)–2001(Q2). A novel feature of the concave model is that it remains statistically robust and structurally stable when it is estimated until 2015(Q4). The concave model imparts a disinflationary bias, which suggests that monetary policy should be more expansionary during downswing phases of the business cycle and neutral during upswing phases. The analysis also considers how the shape of the Phillips curve might change if the balance‐of‐payments constraint on demand is relaxed in a significant way.     

The Impact of Self‐Perceived Relative Income on Life Satisfaction: Evidence from British Panel Data

This is the first article that uses panel data to investigate the impact of individuals' self‐perceived relative income on life satisfaction. Analyses show that the self‐perceived relative income has a significant impact on life satisfaction, but the impact is asymmetric. The decline in life satisfaction is much more significant due to perceiving a lower relative income in comparison to the rise in life satisfaction because of perceiving a higher relative income. Absolute income is only significantly and positively associated with life satisfaction in the pooled ordinary least squares estimations, but the association is never significantly different from zero when individual fixed effects are controlled. Household savings have a positive but small impact on life satisfaction. Among different financial‐related shocks, people's self‐perceived relative income varies the most due to changes in household net income, total savings, and employment status.     

Government Bias in Education,Schooling Attainment,and Long‐Run Growth

A surprising cross‐country stylized fact is that higher public spending on education tends to lower the long‐run growth rate of per capita GDP and the returns to schooling. This is contrary to the conventional wisdom that education is a major driver of growth. In this article, we revisit this issue and try to understand these puzzling facts in terms of an endogenous growth model. Our cross‐country calibration of the growth model predicts that countries with a greater government involvement in education experience lower schooling efforts and lower growth.     

INVENTION AND INNOVATION IN THE AUSTRALIAN NON‐FERROUS MINING INDUSTRY: WHOSE TECHNOLOGY?

Metalliferous mining was of major importance to the Australian economy throughout the nineteenth and twentieth centuries. The industry depended heavily on technology transfer for efficient and economical operations. The country's isolated mining fields tended to rely on adaptation rather than on invention, with toughness, portability and ease of repair and use being the prime criteria for the adoption of new machinery. This article argues that both the internationalism of the mining industry and the nature of its technology transfer blur the lines between invention, innovation and adaptation. Mining machinery, techniques and people were all highly mobile. Hence, attributing national origins to mining technology often seems irrelevant.     

An Examination of Subnational Growth in Nigeria: 1999‐2012

I use satellite imagery on night‐time lights to measure growth across states and local government areas in Nigeria since the return of democracy in 1999. The data suggest that states in southern Nigeria have grown faster on average than states in the north. Using the Ordinary Least Squares, I estimate a relationship between change in night lights and real gross domestic product (GDP) growth in Africa and use the coefficients to estimate GDP growth for states and local government areas in Nigeria over the period. Finally, I evaluate the effects of violence on growth in Plateau, Yobe and Borno states. I find that the crisis in Plateau state has resulted in slower growth compared with other states in the region. I also show that Yobe and Borno states had performed worse than other states in the north even before the outbreak of violence related to the Boko Haram sect.     

Inflation and Economic Growth: Evidence from the Southern African Development Community

In this paper, we investigate the role of inflation rates in determining economic growth in 15 sub‐Saharan African countries, which are all members of the Southern African Development Community, between 1980 and 2009. The results, based on panel time‐series data and analysis (we use the fixed effects and fixed effects with instrumental variables estimators to account for heterogeneity and endogeneity in thin panels), suggest that inflation has had a detrimental effect to growth in the community. We highlight that inflation has offset the Mundell–Tobin effect and consequently reduced the much needed economic activity in the community, and also the importance of an institutional framework conducive to a stable macroeconomic environment as a precondition for development and prosperity in the community.     

Lewis Growth Model and China's Industrialization*

This paper examines China's industrialization in the light of the Lewis growth model. It begins with a perusal of Lewis's own writings and those of Fei and Ranis to clarify certain assumptions and predictions of the Lewis model. The paper then reviews previous applications of the Lewis model in studying industrialization of other countries, and notes the methodological problems that arise in this regard. In applying the Lewis model to study China's industrialization, the paper focuses on the dynamic relationship between wage and marginal product of labor in the traditional sector. For this purpose, the paper estimates a production function for China's agricultural sector using province level data and compares the estimated marginal product of labor with the corresponding wage of the sector. The results show that the marginal product has been increasing (from below) at a faster pace than the wage, as is predicted by the Lewis model. The results indicate that China as a whole is steadily moving toward the Lewis Turning Point.     

Effects of Patent Policy on Income and Consumption Inequality in a R&D Growth Model

To analyze the effects of patent policy on growth and inequality, this article develops a quality‐ladder model with wealth heterogeneity and elastic labor supply. The model predicts that strengthening patent protection increases (a) economic growth by stimulating spending on research and development and (b) income inequality by raising the return on assets. Elastic labor supply creates an additional effect on income inequality. As for consumption inequality, the effect is ambiguous and depends on the elasticity of intertemporal substitution. Calibrating the model to the U.S. data shows that strengthening patent protection increases income inequality by more than consumption inequality, and this pattern is consistent with the data.     

Knowledge capital,innovation, and growth in China

We study the relationship between industry-level investments in intangible knowledge capital (KC) and three key economic indicators in China. We find evidence consistent with the hypothesis that investments in KC are productivity-enhancing among domestically owned and foreign invested enterprises (FIEs). Consistent with other research, we find that China's KC generates new patents, but fewer than in major industrialized economies. Finally, we find that China's comparative advantage has shifted toward those sectors where domestic firms have made larger investments in KC, but this trend appears to be independent of the KC accumulated by FIEs.     

Dynamic Scoring in a Romer‐Style Economy

This article analyzes how changes in tax rates affect government revenue in a Romer‐style endogenous growth model. Lower tax rates on financial income (returns to physical capital and intellectual property) are partially self‐financing primarily because lower financial income taxes stimulate innovation and enhance labor productivity in the long run. In the baseline calibration, about half of a tax cut is self‐financing in the long run, substantially more than in the Ramsey model. The dynamics of the economy's response to a tax cut are very sluggish and, for some variables, nonmonotonic.     

Robust Estimates of Changes in Poverty and Inequality in Post‐Independence Namibia

We estimate changes in the distribution of household consumption expenditure in Namibia since independence in 1990 and the effects on poverty. To produce comparability between two household surveys, we use survey‐matching techniques, and we apply the framework of stochastic dominance to test the robustness of our results. The results reveal a significant decrease in the poverty headcount over the period and small but insignificant decreases in the country's extremely high levels of inequality. Decomposition analysis shows that poverty reduction in Namibia is largely driven by growth in mean incomes rather than redistribution. Even so, there have been important changes in inequality among different social groups especially as educational attainment has replaced ethnicity as the main determinant of between‐group inequality.     

Economic Restructuring,Informal Jobs and Pro‐poor Growth in Urban China

Based on household survey datasets and the framework of pro‐poor growth, the present paper discusses how economic growth and inequality affect poverty reduction in urban China. The findings in this paper suggest that the poor benefit from economic growth through the trickle‐down effect, but that the poor benefit disproportionally less than the nonpoor in both periods, from 1988 to 1995 and from 1995 to 2002; however, in the latter period, the pro‐poorness is higher than that of the former period. Using the principle of Shapley decomposition, this paper develops an index of pro‐poor growth for each income component, and finds that the income from informal jobs is the main contributor to the pro‐poorness of growth during the period 1995 to 2002.