decoupling of industrial energy consumption and co2 emissions in energy intensive industries in scandinavia as methodology the ex post analysis deserves more attention as a device to calibrate energy sector models this paper studies the impact of energy prices and taxes on energy efficiency and carbon emissions of ten industrial sectors in the three scandinavian countries a database with sector specific energy prices and taxes has been established which allows the analysis to take various price reductions and tax exemptions better into account a translog factor demand system estimation for a cross industry pooled model is explored and fixed effects across industries and time is estimated the findings here confirm recent analyses which indicate higher long term elasicities for industries than normally assumed in scandinavian energy sector models with the observations on differences in energy intensities among sectors and countries the findings allow for some optimism as to the opportunities for further decoupling between trends in gross value added carbon emissions and energy consumption

comparison of forecast performance for homogeneous heterogeneous and shrinkage estimators some empirical evidence from us electricity and natural gas consumption abstract maddala et al journal of business and economic statistics 15 1997 90 obtained short run and long run elasticities of energy demand for each of 49 us states over the period 1970 1990 they showed that heterogeneous time series estimates for each state yield inaccurate signs for the coefficients while panel data estimates are not valid because the hypothesis of homogeneity of the coefficients was rejected their preferred estimates are those obtained using the shrinkage estimator this paper contrasts the out of sample forecast performance of heterogeneous panel and shrinkage estimators using the maddala et al journal of business and economic statistics 15 1997 90 electricity and natural gas data sets our results show that the homogeneous panel data estimates give the best out of sample forecasts

the effect of capital gains taxation on home sales evidence from the taxpayer relief act of 1997 the taxpayer relief act of 1997 tra97 significantly changed the tax treatment of housing capital gains in the united states before 1997 homeowners were subject to capital gains taxation when they sold their houses unless they purchased replacement homes of equal or greater value since 1997 homeowners can exclude capital gains of 500 000 or 250 000 for single filers when they sell their houses such dramatic changes provide a good opportunity to study the lock in effect of capital gains taxation on home sales using 1982 2008 transaction data on single family houses in 16 affluent towns within the boston metropolitan area i find that tra97 reversed the lock in effect of capital gains taxes on houses with low and moderate capital gains specifically the semiannual sales rate of houses with positive gains up to 500 000 increased by 0 40 0 62 percentage points after tra97 representing a 19 24 percent increase from the pre tra97 baseline sales rate in contrast i do not find tra97 to have a significant effect on houses with gains above 500 000 moreover the short term effect of tra97 is much larger than the long term effect suggesting that many previously locked in homeowners took advantage of the exclusions immediately after tra97 in addition i exploit the 2001 and 2003 legislative changes in the capital gains tax rate to estimate the tax elasticity of home sales during the post tra97 period the estimation results suggest that a 10 000 increase in capital gains taxes reduces the semiannual home sales rate by about 0 1 0 2 percentage points or 6 13 percent from the post tra97 average sales rate

accounting for asymmetric price responses and underlying energy demand trends in oecd industrial energy demand abstract this paper explores the way technical progress and improvements in energy efficiency are captured when modelling oecd industrial energy demand the industrial sectors of the developed world involve a number of different practices and processes utilising a range of different technologies consequently given the derived demand nature of energy it is vital when modelling industrial energy demand that the impact of technical progress is appropriately captured however the energy economics literature does not give a clear guide on how this can be achieved one strand suggests that technical progress is endogenous via asymmetric price responses whereas another strand suggests that it is exogenous more recently it has been suggested that potentially there is a role for both endogenous technical progress and exogenous technical progress and consequently the general model should be specified accordingly this paper therefore attempts to model oecd industrial energy demand using annual time series data over the period 1962 2010 for 15 oecd countries using the structural time series model framework the general specifications allow for both asymmetric price responses for technical progress to impact endogenously and an underlying energy demand trend for technical progress and other factors to impact exogenously but in a non linear way the results show that almost all of the preferred models for oecd industrial energy demand incorporate both a stochastic underlying energy demand trend and asymmetric price responses this gives estimated long run income elasticities in the range of 0 34 to 0 96 estimated long run price maximum elasticities in the range of 0 06 to 1 22 estimated long run price recovery elasticities in the range of 0 00 to 0 27 and estimated long run price cut elasticities in the range of 0 00 to 0 18 furthermore the analysis suggests that when modelling industrial energy demand there is a place for endogenous technical progress and an exogenous underlying energy demand trend consequently it is argued that any modelling strategy should start by including both and only imposed restrictions if accepted by the data

the determinants of aggregate energy use in west germany factor substitution technological change and trade this paper examines the determinants of production related energy use in west germany over the period 1976 1994 the approach is to estimate a system of share equations for energy capital low skilled labor high skilled labor and materials in the west german production sector taking account of biased technological change and increasing trade orientation while technological change is found to be energy saving increased openness is energy using i e tends to increase the energy share factor substitution biased technological change and trade contribute to the year to year volatility of energy intensity in the proportion 66 30 4 the results are robust across several specifications examined

does public insurance crowd out private insurance the cost of expanding public sector health programs depends critically on the extent to which public eligibility will cover just the uninsured or will crowd out existing private insurance coverage we estimate the extent of crowd out arising from the expansions of medicaid to pregnant women and children over the 1987 1992 period we estimate that approximately 50 percent of the increase in medicaid coverage was associated with a reduction in private insurance coverage this occurred largely because employees took up employer based insurance less frequently there is also some evidence that employers contributed less for insurance and that workers dropped coverage of dependents

the impact of transaction costs and the expected length of stay on homeownership abstract economic theory suggests that an increase in the expected length of stay in a dwelling increases the probability of a household choosing to own a house rather than rent this hypothesis is derived from recognition that there are substantial transaction costs associated with homeownership and increased expected time in the home reduces the annualized transaction cost using a military data set we confirm that expected length of stay in a dwelling and the transaction costs of selling are very important to the ownership decision our best estimate of the transaction costs of selling a home are the sum of 3 of house value and 4 of household earnings

why do households without children support local public schools linking house price capitalization to school spending while residents receive similar benefits from many local government programs only about one third of all households have children in public schools we argue that capitalization of school spending into house prices can encourage even childless residents to support spending on schools we identify a proxy for the extent of capitalization the supply of land available for new development and show that towns in massachusetts with little undeveloped land have larger changes in house prices in response to a plausibly exogenous spending shock towns with little available land also spend more on schools we extend these results using data from school districts in 46 states showing that per pupil spending is positively related to the percentage of developed land this positive correlation persists only in districts where the median resident is a homeowner and is stronger in districts with more elderly residents who do not use school services and have a shorter expected duration in their home our findings support models in which capitalization encourages the provision of durable local public goods and provides an additional reason why some elderly support local school spending

assessing energy price induced improvements in efficiency of capital in oecd manufacturing industries to assess how capital stocks adapt to energy price changes it is necessary to account for the impacts on different vintages of capital and to account separately for price induced and autonomous improvements in the energy efficiency of capital stock the results of econometric analysis for five manufacturing industries in 19 oecd countries between 1990 and 2005 indicate that higher energy prices resulted in smaller energy use due to both improved energy efficiency of capital stock and reduced demand for the energy input the investment response to energy prices varied considerably across manufacturing industries being more significant in energy intensive sectors the results of policy simulations indicate that a carbon tax can deliver significant reductions in energy consumption in the medium run with modest declines in energy using capital stock

interfuel competition in the industrial sector of seven oecd countries abstract the purpose of this article is to present an analysis of interfuel substitution in the industrial sector of seven major oecd countries the united states canada japan germany france the united kingdom and italy over the 1960 1993 period translog models are used to provide estimates of price elasticities from annual data for each country results outline the weakness of price elasticities and changes in behaviour over the last 35 years and show evidence of asymmetric effects since the collapse of oil prices in 1986 substitution has stopped industrial energy demand and oil consumption have stagnated interfuel substitution is widely induced by events other than relative price changes energy policy political and institutional constraints changes in economic activity characteristics within individual country sectors

endogenous technological change and emissions the case of the german steel industry abstract the paper starts from the observation that innovation and technical progress are only portrayed superficially in the predominant environmental economic top down models and that the assumption of perfect factor substitution does not correctly mirror actual production conditions in many energy intensive production sectors bottom up models on the other hand neglect macroeconomic interdependencies between the modelled sector and the general economy this paper presents a new modelling approach in an integrated bottom up top down approach based on the example of crude steel production in germany it is demonstrated how technological progress can be portrayed as process related and policy induced and how the technology choice between limitational processes can be explicitly modelled and implemented in the econometric input output model panta rhei the new modelling approach presented permits a process specific analysis of the impacts of changed frame conditions the effects of which on the choice of technology on the one hand and the technological progress on the other can be described endogenous to the model these features are demonstrated in a co2 tax simulation results show that policy induced technological change is besides a switch in production processes the major source of co2 reduction for the steel sector

where are the industrial technologies in energy economy models an innovative cge approach for steel production in germany top down computable general equilibrium cge models are used extensively for analysis of energy and climate policies energy intensive industries are usually represented in top down economic models as abstract economic production functions commonly of the constant elasticity of substitution ces or translog functional form this study explores methods for improving the realism of energy intensive industries in top down economic models we replace a ces production function with a set of specific technologies and provide a comparison between the traditional production function approach in cge models and an approach with separate technologies for making iron and steel in particular we investigate the response of the iron and steel sector to a set of co2 price scenarios our technology based integrated approach permits a choice between several technologies for producing iron and steel and allows for shifts in technology characteristics over time towards best practice innovative technologies in addition the general equilibrium framework allows us to analyze interactions between production sectors for example between electricity generation and iron and steel production investigate simultaneous economy wide reactions and capture the main driving forces of greenhouse gas emissions reductions under a climate policy we conclude that technology specific effects are crucial for the economic assessment of climate policies in particular the effects relating to process shifts and fuel input structure

tax subsidies to owner occupied housing an asset market approach inflation reduces the effective cost of homeownership and raises the tax subsidy to owner occupation this paper presents an asset market model of the housing market and estimates how changes in the expected inflation rate affect the real price of houses and the equilibrium size of the housing capital stock simulation results suggest that the accelerating inflation of the 1970s which substantially reduced homeowners user costs could have accounted for as much as a 30 percent increase in real house prices persistent high inflation rates could lead ultimately to a sizable increase in the stock of owner occupied housing

dynamic multilevel modelling of industrial energy demand in europe previous studies of industry level energy demand have not accounted for the hierarchical nesting of industries within a system that also adequately allows for country specific determinants of energy demand the principal contribution of this paper is therefore to analyse energy demand for european industries over the period 1995 2009 using a dynamic multilevel model that accounts for this hierarchical data structure among other things we find firstly that our dynamic multilevel model suggests that if industry income and the industry energy price increase by 10 long run energy demand will increase by 8 1 and fall by 6 8 respectively secondly we find that the corresponding long run income and price elasticities are substantially larger in a standard dynamic model of industry level energy demand which does not account for the hierarchical data structure our results therefore suggest that not accounting for the hierarchical data structure results in unreliable estimates of energy demand elasticities from a policy perspective we argue that it is imperative that future industry level energy demand studies account for the hierarchical structure of the data this is to prevent energy policy making being based on industry level evidence that substantially inflates the responsiveness of long run energy demand to income and price changes

tax deductions tax credits and the homeownership rate of young urban adults in the united states the us president s advisory panel on federal tax reform has recommended changes to income tax concessions for homeowners consistent with the opinions of many economists the tax reform panel concl

estimation of short run and long run elasticities of energy demand from panel data using shrinkage estimators this article discusses the problem of obtaining short run and long run elasticities of energy demand for each of 49 states in the united states using data for 21 years estimation using the time series data by each state gave several wrong signs for the coefficients estimation using pooled data was not valid because the hypothesis of homogeneity of the coefficients was rejected shrinkage estimators gave more reasonable results the article presents in a unified framework the classical empirical bayes and bayes approaches for deriving these estimators

macroeconomic effects of efficiency policies for energy intensive industries the case of the uk climate change agreements 2000 2010 abstract this paper reports a study modeling the uk climate change agreements ccas and related energy efficiency policies for energy intensive industrial sectors bottom up estimates of the effects of these policies are introduced into the energy demand equations of a top down dynamic econometric model of the uk economy with fifty industrial sectors mdm e3 this allowed estimation of the effects of the reduced energy use for the outputs from the sectors i e the reductions in unit costs of the energy intensive industries on the demand for their outputs both in the uk and in the export markets the model is solved as a counterfactual 2000 2005 and as a projection 2005 2010 in a series of scenarios to allow estimation of the effects of the policies on inflation and growth as well as on overall energy demand and co 2 emissions the system wide final energy reductions is estimated to be 4 2 mtoe or 2 6 of total final demand for energy by 2010 including a rebound effect of 19 with negligible effects on inflation and a slight increase in economic growth through improved international competitiveness

how a symmetric is the response of import demand to changes in its determinants evidence from european energy imports abstract energy imports are crucial for european countries yet little is known about determinants of their import demand we update long outdated estimates of import demand elasticities using recent data for crude and derived energy products and contribute to the debate on the asymmetry of import demand by using recent developments in econometric modelling our results have important implications for the geopolitics of energy markets in europe asymmetric income seems to be the most relevant determinant of import demand economic growth and fossil fuel consumption are correlated even in the context of the european agenda towards renewables our results suggest that european economic recovery may derail the drive for lower fossil consumption and that changes in the natural gas market may further complicate this drive especially regarding russia as the primary supplier to the eurozone

modelling oecd industrial energy demand asymmetric price responses and energy saving technical change abstract the industrial sector embodies a multifaceted production process consequently modelling the derived demand for energy is a complex issue made all the more difficult by the need to capture the effect of technical progress of the capital stock this paper is an exercise in econometric modelling of industrial energy demand using panel data for 15 oecd countries over the period 1962 2003 exploring the issue of energy saving technical change and asymmetric price responses although difficult to determine precisely it is tentatively concluded that the preferred specification for oecd industrial energy demand incorporates asymmetric price responses but not exogenous energy saving technical change

new housing supply and the dilution of social capital this paper examines the role of local housing supply conditions for social capital investment using an instrumental variables approach and data from the social capital community benchmark survey it is documented that the positive link between homeownership and individual social capital investment is largely confined to more built up neighborhoods with more inelastic supply of new housing the empirical findings provide support for the proposition that in these localities house price capitalization provides additional incentives for homeowners to invest in social capital the findings are also largely consistent with the proposition that built up neighborhoods provide protection from inflows of newcomers that could upset a mutually beneficial equilibrium involving reciprocal cooperation however the results do not appear to be driven by selection based on inherent differences in social aptitudes or by tiebout sorting

modeling of industrial energy consumption an introduction and context industrial energy accounts for roughly one third of total global energy consumption and is expected to continue to use a similar share in the foreseeable future however this is one of the hardest end uses to analyze model and forecast the reasons for modeling industrial energy consumption are as varied as the ways in which energy is used in production processes this has led to the application of a broad set of emperical tools from several different disciplines in this article we provide an introduction and context for a compendium or survey of the methods used in this area this special issue of energy economics is designed to provide both newcomers and accomplished researchers with an overview of the current state of development in the are of industrial energy modeling

the mortgage interest deduction and its impact on homeownership decisions abstract this paper examines the impact of the combined u s state and federal mortgage interest deduction mid on homeownership attainment using data from 1984 to 2007 and exploiting variation in the subsidy arising from changes in the mid within and across states over time we test whether capitalization of the mid into house prices offsets the positive effect on homeownership we find that the mid boosts homeownership attainment only of higher income households in less tightly regulated housing markets in more restrictive places an adverse effect exists the mid is an ineffective policy to promote homeownership and improve social welfare

does investment risk affect the housing decisions of families i introduction the purpose of this article is to investigate the effect of heightened price volatility in housing markets on homeownership and housing demand the literature on housing markets has recognized that buying a home involves consumption and investment motives as in ranney 1981 henderson and ioannides 1983 and fu 1995 purchasing a home requires a concentrated investment in housing stock that for most families is not easily diversified caplin et al 1997 indeed in 1995 the typical american household had most of its gross assets in real estate and held no corporate equity and only households in the top 10 of the wealth distribution held portfolios that were diversified tracy et al 1999 in 1998 despite strong stock market gains home equity was a dominant investment for most households although roughly two thirds owned their homes less than half of all households held stock of those households owning both stocks and homes 60 had more wealth in home equity than in stocks di 2001 nominal house prices in u s cities have generally risen over time with some cities experiencing periods of steep house price appreciation however homeowners in many cities have been exposed to considerable downside risk according to repeat sales price indexes published by the federal home loan mortgage corporation freddie mac significant one year declines in home prices are not uncommon for example nominal declines of 15 5 and 9 occurred in san antonio in 1985 denver in 1987 and boston in 1990 respectively sustained house price declines have occurred in texas california and the eastern states for example in the long beach los angeles metropolitan area the nominal price of single family homes declined 22 from 1990 to 1996 1 furthermore there is evidence that losses at the time of sale are surprisingly common 2 what is not clearly understood is the extent to which families are responsive to such house price risk the investment literature has demonstrated that risk averse households prefer to hold less risk at a given expected rate of return when house prices are uncertain homeownership and demand relationships depend on the distribution of the random price variable 3 fu 1991 characterizes the price distribution by its first and second moments and shows that the likelihood of homeownersbip and the demand for owner occupied housing are increasing in the expected rate of house price appreciation and decreasing in house price volatility these results do not hold however for liquidity constrained households when households cannot borrow against the expected future gains of housing investment for current consumption the theoretical effects on housing choices of the expected rate of return and house price uncertainty are ambiguous fu 1995 thus the effect of price volatility on housing choices remains to be determined empirically the empirical research on housing markets includes a number of micro level econometric studies on the determinants of homeownership and housing demand these studies provide a framework for the present study and have shown that a household s after tax relative cost of homeownership permanent and transitory income and family composition are important in explaining housing decisions e g see rosen 1979 dynarski and sheffrin 1985 henderson and ioannides 1987 1989 in addition homeownership is negatively impacted by income uncertainty haurin 1991 and by an inability to generate savings for a down payment as in henderson and ioannides 1987 linneman and wachter 1989 haurin et al 1994 and gyourko et al 1999 nevertheless despite the importance of owner occupied housing in the portfolios of homeowners surprisingly little empirical work exists on the housing choices of families in the presence of house price uncertainty rosen et al 1984 provide some empirical evidence on the question of housing choices and risk

tax expenditures for owner occupied housing deductions for property taxes and mortgage interest and the exclusion of imputed rental income federal income tax policy affects the cost of homeowner ship for many households popular discussions of the favorable tax treatment of owner occupied housing usually focus on the tax deductibility of mortgage interest and prop erty tax payments as well as the specialized tax rules that affect housing capital gains academic discussions in contrast emphasize the exclusion of the imputed rental income on owner occupied housing as the key tax benefit for homeowners this paper summarizes the current distribution of the tax benefits associated with the mortgage interest and property tax deductions it contrasts this with the distribution of tax benefits asso ciated with the current tax regime for imputed rental income relative to one that taxes home

underlying trends and seasonality in uk energy demand a sectoral analysis this paper demonstrates the importance for energy demand modelling of allowing for trends and seasonal effects that are stochastic in form inherent underlying trends may be non linear and reflect not only technical progress which usually produces greater energy efficiency but also other factors such as changes in consumer tastes and the economic structure that may be working in the opposite direction using quarterly unadjusted data for various sectors in the uk it is shown that unless energy demand models are formulated so as to allow for stochastic trends and seasonals estimates of price and income elasticities could be seriously biased

gasoline demand in the oecd an application of pooling and testing procedures abstract this study utilizes a pooled inter country data set finding the long run price elasticity falls in the range 0 55 to 0 9 depending on the choice of pooled estimators the estimators included the ols within and between country estimators plus five feasible gls estimators even allowing for a ten year distributed lag on price to reflect changes in auto efficiency characteristics the within country estimator yields appreciably more inelastic estimates than did the o s estimator which was heavily influenced by the between or inter country variation this difference raises intriguing questions for future research

short and long run electricity demand elasticities at the subsectoral level a cointegration analysis for german manufacturing industries in this paper we use multivariate cointegration analysis to estimate electricity demand elasticities at the subsectoral industry level this enables us to reap the benefits of lower heterogeneity within the electricity consuming sectors investigated and of retaining additional information otherwise blurred by aggregation the annual data set used covers eight subsectors of the german economy for the period 1970 2007 by employing a cointegrated var model specification and accounting for structural breaks we find cointegration relationships for five of the eight subsectors studied the long run elasticities range between 0 70 and 1 90 for economic activity and between 0 52 and zero for the price of electricity the short run elasticities are estimated by single equation error correction modeling and found to be between 0 17 to 1 02 for economic activity and 0 57 to zero for electricity price granger causality tests indicate that in the long term causality runs from both economic activity and electricity price to electricity consumption while granger causality from electricity price and electricity consumption to economic activity is detected in only two subsectors electricity price is found to be granger caused neither in the long nor the short run finally an impulse response analysis yields plausible results confirming the usefulness of the approach adopted

the social and private micro level consequences of homeownership abstract this paper reviews the literature that describes the micro level economic and social consequences of homeownership we adopt an interdisciplinary approach and include studies from economics sociology geography political science psychology and other disciplines our focus is on the set of consequences of homeownership in developed countries our list of potential outcomes of homeownership includes the impact on household wealth and portfolio choice mobility labor force participation urban structure and segregation home maintenance political and social activities health demographics self esteem and child outcomes there is substantial evidence that homeownership has important effects on some household behaviors and outcomes however we find that much of the past 30 year s literature on consequences of homeowning is deficient from a theoretical or econometric perspective we suggest solutions and identify research gaps present in the literature

metaanalisis de las elasticidades ingreso y precio de la demanda de energia algunas implicaciones de politica publica para america latina the aim of this paper is to analyze the variation in empirical estimates of the income and price elasticities of energy demand the evidence presented through a meta analysis allows identification of the weighted average of the income and price elasticities shows that the estimates are very heterogeneous that there is publication bias and that factors such as region energy sector among others affect its volatility the evidence also indicates that income elasticity in latin america is greater than in the oecd countries and that the price elasticity of energy demand is lower in latin america than in the oecd countries therefore continued economic growth in latin america will be accompanied by a growth in energy demand moreover the establishment of a tax in latin america under the current elasticities is less effective and will be insufficient to control the increase in energy consumption

the energy demand in the british and german industrial sectors heterogeneity and common factors abstract this paper estimates energy demands for the german and british industrial sectors over the 1978 2004 and the 1991 2004 samples from time series models we can conclude that there is a considerable variation in the value of the coefficients across sectors even though energy demands with sensible parameters can rarely be estimated when using a panel approach the ability of some estimators to allow for diversity across subsectors was an important factor in explaining the estimates for price elasticity on the other hand correlation across panel members or common factors did not markedly influence our results with regard to the estimated parameters our preferred choice for elasticity of economic activity and price in the longer sample is 0 52 and 0 64 similar values are found in the case of the shorter samples bearing in mind the high price elasticity energy taxes can be considered an effective strategy for reducing energy consumption

save production a bottom up energy model for dutch industry and agriculture a new version of the model save production simulates the development of energy use in the dutch industry and agriculture including combined heat and power generation the model disaggregates national energy consumption into fuel types industrial sectors energy functions and energy technologies simulation is based on microeconomic investment behavior examples of model application show results on the penetration of combined heat and power in relation to policy instruments such as co2 prices electricity price support and investment subsidies policies that discriminate on co2 emissions result in a slightly more efficient heat and power generation tailored to the dutch situation save production is well equipped to generate outlooks for the dutch industrial and agricultural energy use and for analyzing the role of policies in detail its main strength lies in the middle term simulation of decision making on energy saving technologies and analysis of policy effects specific precautions are required when the model is used for analysis on the longer term for simulating extreme policies or for the analysis of extremely fluctuating energy prices

dynamics of final sectoral energy demand and aggregate energy intensity this paper proposes a regional and sectoral model of global final energy demand for the main end use sectors of consumption industrial commercial and public services residential and road transportation per capita demand is expressed as an s shaped function of per capita income other variables intervene as well like energy prices temperatures and technological trends this model is applied on a panel of 101 countries and 3 aggregates covering the whole world and it explains fairly well past variations in sectoral final consumption since the beginning of the 2000s further the model is used to analyze the dynamics of final energy demand by sector and in total the main conclusion concerns the pattern of change for aggregate energy intensity the simulations performed show that there is no a priori reason for it to exhibit a bell shape as reported in the literature depending on initial conditions the weight of basic needs in total consumption and the availability of modern commercial energy resources various forms might emerge

strategic alliances and the rate of new product development an empirical study of entrepreneurial biotechnology firms abstract a key to success in industries populated by entrepreneurial high technology firms is the rate at which the firm develops new products rapid product development creates significant advantages for entrepreneurial firms including access to early cash flows external visibility legitimacy and early market share the higher a firm s rate of new product development the more likely the firm is to achieve and maintain these first mover advantages this is particularly true in industries such as pharmaceuticals where the effectiveness of patent protections leads to patent races in which a winner take all scenario exists but even in industries where patent protection is weak the advantages of being first in terms of market preemption reputation effects experience curve effects etc can still be of major importance we argue that one way an entrepreneurial firm can increase its rate of new product development is by entering into strategic alliances with firms that possess complementary assets the basic proposition advanced is that a firm s rate of new product development is a positive function of the number of strategic alliances that it has entered however the relationship between strategic alliances and the rate of new product development may be nonlinear specifically although strategic alliances may initially have positive effects on the rate of new product development this relationship may exhibit diminishing returns moreover past some point it is possible that negative returns may set in thus the relationship between the number of alliances and the rate of new product development may be an inverted u shape two reasons can be given to support such a relationship first not all alliances will make an equal contribution to increasing the rate of new product development the economic law of diminishing returns suggests that the more alliances a firm engages in the more likely it is to enter some alliances whose marginal contribution is relatively minor such a phenomenon on its own is enough to suggest diminishing returns second gaining access to complementary assets through strategic alliances is not without risks malperformance may occur when the firm discovers that the complementary assets provided by the partner are a poor match fail to live up to the promises made by the partner or a partner may opportunistically exploit an alliance expropriating the firm s know how while providing little in return these problems arise because the effectiveness with which the firm can select and manage alliance partners is likely to be negatively related to the number of alliances the firm is managing due to information processing requirements the quality of partner search and the ability to monitor the partners actions will decline as the firm increases the number of alliances in which it is involved this reasoning leads to a prediction that past some point alliances will be increasingly vulnerable to malperformance this raises not only the possibility of diminishing returns to the number of alliances but also negative returns as the number of alliances increases past some critical point this proposed relationship between alliances and new product development was tested on a sample of 132 biotechnology firms the results provide strong evidence to support the inverted u shaped relationship between the number of strategic alliances and the rate of new product development therefore at low levels strategic alliances are positively related to new product development but as the number of alliances increases the benefits begin to decrease and at high levels the costs of an additional alliance actually outweigh the benefits

housing purchases and transitory income a study with panel data in this paper we explore the role of transitory income in the housing purchase decision because of moral hazard considerations banks typically require downpayments to be financed internally hence transitory income is potentially important in overcoming the downpayment constraint using a novel approach to the measurement of permanent and transitory income we estimate a two stage model in which households decide whether to purchase housing in the first stage and the quantity to be purchased in the second the results indicate a significant role for transitory income in both decision stages