下载文档原格式
Chapter Production and Growth25Economic Growth Around the World •Real GDP per person–Living standard–Vary widely from country to country •Growth rate–How rapidly real GDP per person grew in thetypical year•Because of differences in growth rates–Ranking of countries by income changessubstantially over time2TableThe variety of growth experiences1Country Period Real GDP per personat beginning of period Real GDP per personat end of periodGrowth rate(per year)Japan Brazil China Mexico Germany 1890–20061900–20061900–20061900–20061870–2006$1,4087296701,0852,045$33,1508,8807,74011,41031,8302.76%2.392.342.242.043yCanada Argentina United States IndiaUnited Kingdom Indonesia Bangladesh Pakistan 1870–20061900–20061870–20061900–20061870–20061900–20061900–20061900–20062,2242,1473,7526324,50283458369034,61015,39044,2603,80035,5803,9502,3402,5002.041.881.831.711.531.481.321.22Productivity: its Role and Determinants•Productivity–Quantity of goods and services–Produced from each unit of labor input •Why productivity is so important–Key determinant of living standards–An economy’s income is the economy’soutput4Productivity: its Role and Determinants•How productivity is determined–Physical capital•Stock of equipment and structures•Used to produce goods and services–Human capitalH it l•Knowledge and skills that workers acquirethrough education, training, and experience5Productivity: its Role and Determinants •How productivity is determined–Natural resources•Inputs into the production of goods and services•Provided by nature, such as land, rivers, andmineraldeposits–Technological knowledge•Society’s understanding of the best ways toproduce goods and services6•Population growth & Standard of living growth –is it sustainable?•Argument–Natural resources ‐will eventually limit how much world’s economies Are natural resources a limit togrowth?the world s can grow–Technological progress ‐often yields ways to avoid these limits–Improved use of natural resources–Recycling7•Are these efforts enough to permit continued economic growth?•Prices of natural resources–Scarcity ‐reflected in market pricesN t l iAre natural resources a limit togrowth?–Natural resource prices •Substantial short ‐run fluctuations•Stable or falling ‐over long spans of time–Our ability to conserve these resources•Growing more rapidly than their supplies are dwindling •Market prices ‐no reason to believe that natural resources are a limit to economic growth 8Economic Growth and Public Policy •Saving and investment•Raise future productivity–Invest more current resources in the production of capital–Trade ‐off•Devote fewer resources to produce goods and services for current consumption9Economic Growth and Public Policy •Diminishing returns and the catch ‐up effect •Higher savings rate–Fewer resources –used to make consumption goods–More resources ‐to make capital goods –Capital stock increases–Rising productivity–More rapid growth in GDP10Economic Growth and Public Policy •Diminishing returns and the catch ‐up effect •Diminishing returns–Benefit from an extra unit of an input –Declines as the quantity of the input increases•In the long run; higher savings rate –Higher level of productivity–Higher level of income–Not higher growth in productivity or income11Figure Outputper WorkerIllustrating the production function11 2. When the economy has ahigh level of capital, anextra unit of capital leads toa small increase in output.12Output per WorkerThis figure shows how the amount of capital per worker influences the amount of output per worker. Other determinants of output, including human capital, natural resources, and technology, are held constant. The curve becomes flatter as the amount of capital increases because of diminishing returns to capital 11. When the economy has a low level of capital, anextra unit of capital leads to a large increase in output.Economic Growth and Public Policy•Diminishing returns and the catch‐up effect •Catch‐up effect–Countries that start off poor–Tend to grow more rapidly than countries that start off rich•Poor countries–Low productivity–Even small amounts of capital investment •Increase workers’ productivity substantially13Economic Growth and Public Policy•Diminishing returns and the catch‐up effect •Rich countries–High productivity–Additional capital investment•Small effect on productivity•Poor countries–Tend to grow faster than rich countries14Economic Growth and Public Policy•Investment from abroad–Another way for a country to invest in newcapital–Foreign direct investment•Capital investment that is owned and operated byC it l i t t th t i d d t d ba foreign entity–Foreign portfolio investment•Investment financed with foreign money butoperated by domestic residents15Economic Growth and Public Policy•Education–Investment in human capital–Gap between wages of educated anduneducated workers–Opportunity cost: wages forgonei f–Conveys positive externality•Problem for poor countries–Brain drain16Economic Growth and Public Policy •Health and nutrition–Healthier workers –more productive–The right investments in the health of thepopulation•One way for a nation to increase productivity andO f ti t i d ti it draise living standards–Historical trends: long‐run economic growth •Improved health ‐from better nutrition•Taller workers –higher wages –betterproductivity17Economic Growth and Public Policy •Health and nutrition–Vicious circle in poor countries•Are poor–Because populations are not healthy•Populations are nothealthy–Because they are poor»Cannot afford better healthcare and nutrition18Economic Growth and Public Policy•Property rights and political stability •Foster economic growth–Protect property rights•Ability of people to exercise authority over theresources they ownth•Courts –enforce property rights–Promote political stability19Economic Growth and Public Policy •Free trade•Poorest countries–Inward‐oriented policies•Avoid interaction with the rest of the world •Outward‐oriented policies–Integrate into the world economy •International trade in goods and services –Can improve economic well‐being20Economic Growth and Public Policy •Research and development•Knowledge –public good–Farming methods–Aerospace research•Air Force; NASA–Research grants•National Science Foundation•National Institutes of Health–Tax breaks–Patent system21Economic Growth and Public Policy•Population growth•Large population–Large labor force–More consumers•Stretching natural resources?•Diluting the capital stock–High population growth•Reduces GDP per worker–Promoting technological progress22。
