Economic Efficiency and Incentives for Change within Namibia's Community Wildlife Use Initiatives

Five community wildlife conservation and utilization initiatives, or conservancies, on communal land in Namibia were appraised to determine economic and financial worth. Conservancies are economically efficient and able to contribute positively to national income and the development process. They also provide a channel for the capture of international donor grants (wildlife non-use values) as income, and generate attractive financial returns for communities. Donor grants are very important catalysts in promoting land use change in conservancies. Ability to generate income from tourism is important. Flexibility and adaptability in design are key factors, ensuring effective rural development and conservation.     

Benefits to local communities from community conservancies in Namibia: an assessment

This article evaluates the benefits of community-based activities in wildlife conservancies in Namibia by asking three questions: Do community conservancies contribute to an increase in household welfare? Are such programmes pro-poor; that is, do they improve welfare more for poorer households than for the less poor? Does participation in conservancy increase household welfare more for participants than non-participants? This study bases the analyses on a 2002 survey covering seven conservancies and 1192 households. The results suggest that community conservancies have a positive impact on household welfare. The authors also conclude that this impact is poverty-neutral in some regions and pro-poor in others. Further, welfare benefits from conservancies appear to be fairly evenly distributed between participant and non-participant households.     

Economic analysis of community‐based wildlife utilisation initiatives in Botswana

Financial and economic cost‐benefit models were applied to determine the worth of several planned community‐based, wildlife utilisation initiatives in Botswana, and to identify policy guidelines. Projects planned to incorporate small‐scale wildlife cropping. Rentals from safari‐hunting or wildlife‐viewing activities were found to have inherent viability, both financially and economically, particularly in the north of the country, where tourism is greatest. However, success is dependent on both good management and high densities of wildlife. In the Kalahari, game at low densities (more than 100 hectares per large stock unit) cannot be cropped profitably by communities and investments in game protection will result in economic gain. At higher game densities (between 100 and about 25 hectares per large stock unit), positive financial returns are possible with community‐based cropping but two considerations are important. First, investment in protection continues to pay economically and, second, cropping at close to maximum sustainable intensity is most profitable economically. Selective protection aimed at restoring proportions of drought‐sensitive game species also appears economically rewarding.     

Estimating national economic parameters for Namibia using the shadow pricing approach

This paper estimates national economic parameters to be used for project appraisal in Namibia. The shadow prices of capital, labour, and foreign exchange are derived. The results suggest that the economic opportunity cost of capital is 7.2%. The economic costs of Namibian labour as a share of financial costs are 32% for urban semi-skilled and unskilled labour, and 54% for rural semi-skilled and unskilled labour. The economic costs of foreign labour as a share of financial costs are 59%. The shadow exchange rate factor is estimated to be 4% for the Namibian economy.     

Listing advantages around the world

Using the firm-level data of 33 countries over 10 years (2008–2017), we find that the listed firms have lower returns on assets than the similar unlisted firms, in most countries. The result is associated with a higher capital-labor ratio of listed firms, implying that the listed firms face less financial constraints. Moreover, we investigate the institutional factors that exacerbate or mitigate the listing advantages (i.e., ROA difference) across the countries. Compared to English origin law, countries with German and Scandinavian legal origins strongly narrow the listing advantages but the French legal origin shows mixed results. Overall, the listing advantages seem narrowed with stronger creditor’s rights but show unclear associations with the strength of corporate governance.     

Returns to school resources in the Jim Crow South

We estimate returns to school resources in the Jim Crow era, as measured by young males' 1940 wage earnings, occupational status, and cognitive aptitude scores. Results point to a 16 cent annual return on each $1 invested in public schools. To the question of whether some school inputs mattered more than others, we find comparable 25–32 cent returns per dollar invested in extended school years, teacher salaries, and smaller classes. School spending and inputs had much more bearing on labor market outcomes than aptitude scores. We document diminishing returns to school expenditures, which, in combination with segregated schools, resulted in higher returns to expenditures in black schools relative to white.     

英语技能在中国劳动力市场的工资溢价测算

作为人力资本的一种形式,语言能力在劳动力市场很可能有一定的经济回报。文章采用CFPS、CLDS和CGSS三套数据,检验了英语的工资回报效应。总体上,英语存在显著的"工资溢价"效应,且这种效应具有异质性。例如,年龄较大、受教育程度较高、从事管理和技术职业以及东部地区劳动者的英语经济回报率显著,同时英语能力对城市居民的影响要大于农村居民,对城市本地居民的影响要大于农民工。另外,在工资回报率上,英语的听说能力要明显大于英语的读写能力,而口语的作用又要大于听力。     

Accounting and determinants analysis of China's provincial total factor productivity considering carbon emissions

One of the most undesirable output of China's rapid economic growth has been increasing carbon emissions. This study measures and analyzes the impact of carbon emissions on China's regional total factor productivity from 2000 to 2017. Using global Malmquist-Luenberger productivity indexes, we re-estimate the provincial total factor productivity taking carbon emission into account, comparing different assumptions of returns to scale and considering the rank reverse issue. The differences of technical progress and efficiency change across Chinese regional economies are also investigated and we found that the former was the primary contributor to improved Chinese provincial productivity performance. In addition, we analyze the influencing factors of productivity based on provincial panel data. Our results indicate that innovation capacity, energy and employment structure had significant impact on the provincial productivities while urbanization had a negative impact. A more sustainable development can be expected by expanding regional investment in R&D, adjusting and optimizing structures of regional industries and energies.     

The Impact of Research and Development on Economic Growth and Productivity in the U.S. States

Research and development (R&D) has a large effect on both state output and total factor productivity in the long run. Our estimates for the private sector of the U.S. states from 1963 to 2007 show that the R&D elasticity averages 0.056–0.143. The implied returns to state Gross Domestic Product (GDP) from R&D spending are 82–211%. There are also positive R&D spillovers, with 70–80% of the total returns accruing to other states. We also find that states with more human capital have higher own‐ and other‐R&D elasticities, and those in lowest tier of economic development have the least own‐state R&D elasticity but the highest other‐R&D elasticity. In addition, we find that the positive effect of R&D spillovers across states is larger when we consider R&D spillovers across states based on economic similarity of R&D across sectors.     

Wage Returns to Schooling in Nigeria

Abstract: In the last two decades, primary and secondary school enrollment rates have declined in Nigeria while enrollment rates in post‐secondary school have increased. This paper estimates from the General Household Survey for Nigeria the private returns to schooling associated with levels of educational attainment for wage and self‐employed workers. The estimates for both men and women are small at primary and secondary levels, 2–4 percent, but are substantial at post‐secondary education level, 10–15 percent. These schooling return estimates may account for the recent trends in enrollments. Thus, increasing public investment to encourage increased attendance in basic education is not justifiable on grounds of private efficiency, unless investments to increase school quality have higher private returns. With high private returns to post‐secondary schooling, students at this level should pay tuition, to recoup more of the public costs of schooling, which may be redistributed to poor families through scholarships.     

A Comparison of Menu Costs in Open and Closed Economies with a Mixed Industrial Structure

In this paper we develop Dixon and Hansen (1997) to allow for two-sector small open economy in which the non-traded sector is monopolistic. The closed economy version of the model generalises Dixon/Hansen to allow for diminishing returns on the traded sector. We compare the short-run impact of menu costs on the economy and also the size of menu costs needed to sustain nominal rigidity in both the open and closed economies. We find that whilst the welfare gains from monetary expansion are of a similar magnitude, nominal rigidity can occur for much smaller menu costs than in the closed economy case. Hence we argue that menu costs and the resultant nominal rigidities are more likely to be important in an open economy.     

Microeconomic adjustments in Uruguay during 1973–1981: The interplay of real and financial shocks

This paper uses the financial statements of industrial firms to develop an integrated firm's eye view of the changes in the Uruguayan economy during 1973–1981. In the first of three subperiods, 1973–1975, real financial costs were very negative and tended to offset low returns on operating assets. During 1976–1978, the dismantling of interest rate controls increased real financial costs, but other factors increased the returns on operating assets more rapidly. During 1979–1981, financial costs jumped enough to more than absorb increases in gross earnings, which were probably due to Argentine demand. The rates of earning and capital formation were highest among exporters in the second subperiod, when a major export promotion program was in place. This pattern was reversed in the third subperiod, as the promotion programs were dismantled and real currency appreciation seemed to squeeze gross earnings of exportables relatively more. This unequal squeezing was probably due to redundant tariff and other protection for import-competing producers.     

The economic returns to proficiency in English in China

We examine economic returns to proficiency in English in China using two waves of the China Labor-Force Dynamics Survey (CLDS). We find positive earnings returns to proficiency in English. We find considerable heterogeneity in the economic returns to proficiency in English across age groups, coastal and inland provinces, levels of education and occupation. We find that the returns to proficiency in English are higher in the coastal region, higher for women and evidence of education-language and skill-language complementarity. We also see differences in the economic returns to English between urban and rural residents and between rural-urban migrants and urban locals. Our findings help to explain why the demand for learning English is so high in China, as well as having implications for the Chinese government at a time when it is re-evaluating the importance attached to learning English in the curriculum.     

Using Unemployment Rates as Instruments to Estimate Returns to Schooling

I use state unemployment rates during a person's teenage years to estimate the returns to schooling. A higher unemployment rate reduces the opportunity costs of attending school. Using the same 1980 Census data set that Angrist and Krueger (1991) use, I also estimate returns to schooling with a modified version of their quarter‐of‐birth instrument. The estimates from the two‐stage least squares (2SLS) model using the unemployment rate and the model using the quarter‐of‐birth instruments are almost identical. In addition, these 2SLS estimates are larger than the ordinary least squares (OLS) estimates, supporting this counterintuitive, yet prevalent, result in the literature.     

Return migration and Hukou registration constraints in Chinese cities

This paper documents the patterns of return migration and labor mobility constraints in China using two unique data: the 2017 China Household Finance Survey and a newly developed urban Hukou registration index. The size of return migrants is larger than that of migrants without local Hukou registration. Majority of return migrants move from more developed region back to their less developed home town where they have Hukou registration. Empirical results show that Hukou registration barrier, typically higher in more developed cities, leads to a higher probability of returning among low-skilled migrant workers, and such an effect only exits among migrants moving across provinces and migrants with rural Hukou.     

Sources of spatial welfare disparities in Indonesia: Household endowments or returns?

This article investigates (i) the extent to which the differences in the standard of living among districts in Indonesia are due to differences in the marginal welfare gains (returns) associated with household mobile endowments or differences in household endowments themselves; and (ii) whether the current allocation of fiscal expenditures by the central authorities is related to the main determinants of the spatial disparities in welfare among districts. Differences in the returns to household mobile characteristics are found to be the primary explanation of the welfare differences. The allocation of fiscal transfers to districts is found to be based on “needs” defined as low returns to household mobile endowments. This also suggests that the design of the fiscal transfer system is consistent with promoting the opportunities for welfare across districts as opposed to equalizing the level of welfare itself. Finally, the marginal welfare gains of most household mobile endowments are found to be higher in districts with more roads.     

人力资本边际收益递减、后发优势与经济增长——基于国家间面板数据的实证分析

学术界一般认为人力资本边际收益是递增的。本文利用一般动态模型根据世界银行提供的国别数据的实证分析得出的结论刚好相反:人力资本边际收益是递减的。从长期来看,世界的人力资本边际收益呈递减趋势;从国别比较来看,发展中国家的人力资本边际收益高于发达国家。而且从国家层面来看,人力资本存量与经济增长呈负相关关系:人力资本存量低的国家经济增长较快,而人力资本存量高的国家经济增长较慢。人力资本从穷国流向富国而不是相反,这是因为富国的总量劳动生产率高所带来的高工资所致,这并不意味着富国的人力资本边际收益比穷国更高。     

A note on black-white wage disparity

Conclusion The evidence in this article helps to explain the black-white earnings differential in 1970, six years after the passage of Fair Employment Legislation, in terms of traditional measures such as experience and education along with a public policy measure that has of late come under fire. And contrary to the notion that the gains from such government policy have not benefited the less fortunate workers but simply accrued only, or mainly, to upper- or middle-class blacks, the results presented here indicate that enforcement, such as it is, has had beneficial effects for black men and women in virtually all major occupational categories. When a distinction is made between the various major occupational categories, the importance of education and experience as factors that contribute toward explaining black-white earnings differentials is generally supported by this study. However, neither education nor experience shows a consistent explanatory power across occupational categories and especially across the sexes. For example, experience is more frequently found to be a significant factor for black men than it is for black women. Education, on the other hand, was found to have no statistically significant relationship with wage differentials in major blue-collar job categories for both men and women, thus lending some credence to the dual labor market thesis regarding returns to education. By far the factor we have found to be the most consistent with respect to its impact upon racial wage differentials for both men and women is the fair employment variable. Indeed, across major occupational groups the existence and enforcement of fair employment laws seems to have had, generally, a more significant effect on reducing racial wage differentials than each of the other independent variables.     

Assessing the Efficacy of Consumer Boycotts of U.S. Target Firms: A Shareholder Wealth Analysis

This article analyzes the effectiveness of 125 U.S. boycotts from 1978 to 2017. On average, the results suggest that actual consumer boycott calls against U.S. target firms (treatment firms) had a negative and statistically significant effect on the shareholder wealth of U.S. target firms. The synthetic control method and the placebo tests confirmed that the negative cumulative abnormal returns (CAR) observed here are robust and not due to idiosyncratic shocks unrelated to the announced boycotts. Negative and statistically significant boycott effects were also found for boycott threats and categorical issues related to union issues, animal rights, living wages in less‐developed countries, racial/sexual discrimination, ideological issues, and political/religious boycotts. The results also show that firms with a higher level of competition and advertising activity experienced larger negative boycott effects; and firms with higher net income observed mitigated boycott effects.     

教育回报异质性问题研究

传统明瑟(Mincer)方程法估计出来的教育回报率是一个常数,是一种平均意义上的教育回报率.教育回报异质性问题指的是,教育回报率会随着研究群体的变化而变化,不再是一个常数.因此,在研究教育回报异质性问题时,传统明瑟方程法便不再适用.本文使用一种新的方法(部分线性模型)研究教育回报异质性问题,得到以下结论:女性的教育回报率高于男性;年龄越大,教育回报率越低;女性中专的教育回报率高于高中的教育回报率;年轻女性初中的教育回报率较高,年轻男性初中的教育回报率较低.