a multivariate sample selection model estimating cigarette and alcohol demands with zero observations heckman s sample selection model is generalized to the multivariate case and used to estimate demands for cigarettes beer and wine by individuals in the united states the specification allows correlations between the error terms of multiple selection and level equations and nests the popular bivariate sample selection model and two part model empirical results suggest that the proposed model performs better than the restricted specifications differentiated effects of variables on probabilities and levels of consumption also suggest rejection of the tobit system gender differences are present and demographic variables are more important than income in determining consumption of cigarettes beer and wine

zero observations and gender differences in cigarette consumption censoring mechanisms and gender differences are investigated for cigarette consumption by individuals in the usa the gaussian single hurdle model is proposed which generalizes the specifications of cragg 1971 and heckman 1979 and allows examination of the empirical relevance of the two censoring mechanisms in the existing double hurdle model the proposed model performs better than cragg s and heckman s models but not as well as the double hurdle model and also produces different elasticity estimates the hypothesis of equal consumption parameters is rejected and demand elasticities found to differ between men and women income does not play a role and age has conflicting effects on the probability and level of cigarette smoking older individuals are less likely to smoke but conditional on smoking consume more cigarettes than their younger counterparts education has negative effects on the probability and level of smoking and can be an effective tool to curtail cigarette smoking

a double hurdle approach to modelling tobacco consumption in italy this article analyzes the determinants of tobacco expenditures for a sample of italian households a box cox double hurdle model adjusted for heteroscedasticity is estimated to account for separate individual decisions concerning smoking participation and tobacco consumption and to correct for nonnormality in the bivariate distribution of the error terms nested univariate and bivariate models are found to be excessively restrictive supporting the adequacy of a generalized specification estimation results show that consumption decisions are significantly affected by income and demographic characteristics in particular income positively impacts tobacco expenditure while participation probability substantially declines as age increases the existence of significant gender differences in both smoking participation and tobacco consumption patterns is found while high education and white collar occupation reduces the likelihood to smoke and tobacco expenditure levels single adult households have a lower

health behavior health knowledge and schooling the positive correlation between schooling and good health is well documented one explanation is that schooling helps people choose healthier life styles by improving their knowledge of the relationship between health behaviors and health outcomes that is schooling improves the household s allocative efficiency in producing health this empirical study uses direct measures of health knowledge to test this explanation part of the relationship between schooling and the consumption of cigarettes alcohol and exercise is explained by differences in health knowledge however most of schooling s effects on health behavior remain after differences in knowledge are controlled for

profit maximisation vs agency an analysis of charitable giving by uk firms the charitable giving of a large sample of publicly quoted uk firms is analysed within a model that explores the profit maximisation and managerial utility enhancement motives for giving the empirical method draws a distinction between the decision to participate in giving and the determination of the amount of corporate contributions firm size and advertising intensity are found to be positively associated with the probability of participation in giving stricter corporate governance and the rate of directors remuneration are negatively related to the probability of participation among givers the rate of giving is related positively to r d intensity the rate of directors remuneration and corporate profitability and negatively to firm indebtedness

an investigation of the increasing prevalence of nonpurchase of meat by british households the purpose of the analysis has been to investigate the determinants of the household s decisions regarding the purchase of meat in great britain the approach using a box cox generalization of the double hurdle model has depicted the household making two choices namely whether or not to purchase the product the participation decision and then for those households which do purchase how much to buy the expenditure decision the determinants considered are socioeconomic variables such as the total expenditure of the household market prices characteristics of the householder age gender education type of employment and characteristics of the household location presence of children etc by conducting the analysis over several years of survey data 1975 1993 it is possible to investigate whether the influence of these variables has changed over time the bulk of the empirical analysis has concerned single adult households with or without children

public vs private demand for covering long term care expenditures this article studies the determinants of the willingness to pay wtp for long term care ltc insurance coverage two alternatives are considered one compulsory financed through taxes the other purchased on a voluntary basis and paid through a premium wtp was elicited through open ended contingent valuation within a survey conducted in the italian region emilia romagna about ltc population needs we model information on individual wtp as a two stage process where respondents first establish their interest for ltc cover then state their wtp results show that interest and wtp are influenced by different variables and that differences arise also between the wtp for public and private coverage

bank regulation and international financial stability a case against the 2006 basel framework for controlling tail risk in trading books abstract in attempting to promote international financial stability the basel committee on banking supervision 2006 provided a framework that sought to control the amount of tail risk that large banks around the world would take in their trading books relative to their corresponding minimum capital requirements however many of these banks suffered significant trading losses during the recent financial crisis our paper examines whether the basel framework allowed banks to take substantive tail risk in their trading books without a capital requirement penalty we find that it allowed banks to do so and that its minimum capital requirements can be notably procyclical hence focusing on the way the basel framework sought to control the amount of tail risk in trading books relative to their corresponding minimum capital requirements our paper supports the view that it was not properly designed to promote financial stability we also discuss alternative regulatory frameworks that would potentially be more effective than the basel framework in preventing banks from taking substantive tail risk in their trading books without a capital requirement penalty

household consumption of cheese an inverse hyperbolic sine double hurdle model with dependent errors the dependent double hurdle model is generalized by an inverse hyperbolic sine transformation of the dependent variable the resulting specification features a flexible parameterization accommodates heteroskedastic errors and nests a range of common limited dependent variable models results for u s household cheese consumption suggest that the homoskedastic and normal double hurdle model is misspecified income elasticities are small and vary across household groups foodstamp recipients are more responsive to income changes than nonrecipients foodstamp recipients are also less likely to consume cheese but conditional on consumption spend more than nonrecipients

unemployment and female labour supply the definition of labour force participation in the standard labour supply model stands in sharp contrast to that used in compiling the labour force statistics in the labour supply models only those supplying positive hours of work are considered to be labour force participants on the other hand participation in the labour force statistics is often defined to include not only those supplying positive hours but also those actively searching for work this paper is an attempt to reconcile these concepts by allowing unemployed workers to enter a generalisation of the standard labour supply model this turns out to be a convenient way to enter demand side factors directly into the determination of an individual s labour market position the model is applied with some success to the working behaviour of married women in the uk family expenditure survey

cross section estimation of us demand for alcoholic beverage a flexible limited dependent variable model is used to examine us demand for alcoholic beverage parameterization and distributional assumptions of the double hurdle model cragg 1971 and tobit model tobin 1958 are rejected findings suggest that price income household composition and other characteristics have significant effects on alcohol consumption income and own price elasticities are significant but relatively small

an econometric analysis of smoking prevalence among lone mothers this paper uses panel data to examine the determinants of smoking among lone mothers over the period 1991 1996 consideration is given to the initial conditions problem encountered when modelling dynamic panel probit models and a recently suggested approach is applied to address this problem

modelling milk purchasing behaviour with a panel data double hurdle model in this study the double hurdle model typically used in cross sectional data is extended to panel data structures the new double hurdle model can account not only for the censored nature of commodity purchases but also for the dynamics of the purchase process in this model a flexible error structure is assumed to account for state dependence and household specific heterogeneity in the empirical application for milk purchases it is found that generic advertising increases the probability of market participation as well as the purchase quantity and incidence temporal dependence is also found in both purchase and participation equations

at home consumption of cheese a purchase infrequency model for many commodities zero purchases are recorded in household budget surveys even though positive consumption occurs this may reflect a survey period that is shorter than the purchase cycle the present study estimates a purchase infrequency model for cheese using the 1987 bls consumer expenditure survey appropriateness of the tobit specification is examined along with the assumption of independence of the two stage expenditure decision process applied consumption analyses often use household budget surveys with little concern as to survey period length relative to the length over which consumption can occur many of these analyses use the tobit model to account for censoring associated with use of this type of model are underlying assumptions that first the same stochastic process affects both purchase decisions and consumption levels and second a zero value of the dependent variable represents a true comer solution however when the commodity in question has a purchase cycle longer than the survey period length a zero expenditure level may not correspond to zero consumption and the tobit specification may be inappropriate blundell and meghir p 197 as a commodity cheese may exhibit characteristics precluding use of a tobit demand model for many cheese varieties consumption may occur many weeks after purchase as evidence the 1972 and 1987 consumer expenditure surveys report that 48 and 42 of surveyed households respectively had purchased cheese over a one week survey period in contrast the 1977 usda household food consumption survey indicates over 75 of surveyed households had consumed cheese at home over a one week period this large difference

a two step econometric estimation of covariates of side selling the case of coffee cooperatives in southwest ethiopia despite their apparent economic benefit to smallholder farmers cooperatives are vulnerable to the problem of side selling using cross sectional household data and cragg s regression model we ide

a box cox double hurdle model of wildlife valuation the citizen s perspective abstract a stated preference approach is used to elicit the attitudes of the general public towards coyote conservation the payment vehicle is presented in a way that explicitly prompts respondents to adopt a citizen perspective rather than a consumer perspective when responding to the survey to deal with the large numbers of zero responses a box cox double hurdle specification is used to model separately individuals choices about whether to support conservation or not and their choice about the level of support the results show that simpler analyses that do not account explicitly for these two different decisions would lead to misleading conclusions in the study of nuisance wildlife the study uses primary data from prince edward island canada

are frequency and intensity of participation decision bearing aspects of consumption an analysis of drinking behaviour analysing quantity consumed per period implies a restriction on decisions about how frequently and intensely to consume this quantity hypothesis is rejected based on estimated equations for the frequency and intensity of spirit consumption consequently a simultaneous equation system for frequency and intensity is estimated as they enter the budget constraint as a multiplicative term income and education levels are found to be negatively related to intensity but not frequency this may reflect differences in the shadow prices of frequency and intensity for different socioeconomic groups or heterogeneous preferences for intoxication and health distinguishing between these aspects of drinking patterns is important for the evaluation of the price responsiveness of harmful drinking restrictions on availability and the causes of inequalities in health

off farm labour allocation decisions in small scale rural households in zimbabwe the double hurdle model is used to analyse the off farm labour decisions of small scale agricultural household members in the shamva district of zimbabwe the approach permits the joint modelling of the decision to participate in the labour market and the decision regarding the amount of time allocated to work results indicate that a number of variables notably gender education and assets indeed have effects which are qualitatively and quantitatively different in terms of participation and hours worked overall the empirical analysis confirms the importance of individual characteristics such as gender and education and household farm characteristics e g land area accessible to the household productive assets remittances and the agricultural terms of trade in influencing the labour market decisions of rural household members

selection criteria for a microeconometric model of labour supply the wide variety of observed behaviour that is displayed in survey data suggests that microeconometric models should allow a reasonable degree of flexibility in specification however since these models are generally used for policy analysis they are required to satisfy some degree of theoretical consistency this requirement has generally led to the adoption of rather simple inflexible models based on additive preferences or linear labour supply responses we estimate and test a sequence of models for the labour supply of married working women emphasizing the importance of testing both the thecretical and statistical assumptions underlying the models

imf lending programs participation and impact abstract participation in imf programs has been an option that more and more developing countries have exercised in recent years in this paper a detailed analysis of such participation over the period 1976 1986 provides a number of insights into the motivations for and the macroeconomic effects of such participation participation is driven by a combination of past performance present external influences and sluggish adjustment of developing countries the ability to predict which countries will participate in the imf program is quite good with nearly 90 percent of variation in such choices accounted for by the explanatory variables employed increased participation has as contemporaneous effects a reduction in economic growth and domestic investment and an improvement in the current account lagged effects of increased participation on economic growth and domestic investment are positive and in most estimates quantitatively greater than the contemporaneous effects there is also evidence of significantly lower public investment an increased budget surplus and real depreciation of the exchange rate with increased participation results for domestic credit creation and government current expenditure although they have a sign consistent with more austere policy cannot be shown to be significantly different from those not participating

a double hurdle model of cigarette consumption this paper shows the importance of the double hurdle approach for modelling individuals cigarette consumption using data from the uk general household survey and argues that participation and consumption should be treated as separate individual choices the likelihood function for the full double hurdle is derived and it is shown how restrictions on the stochastic specification of the model and auxillary information which identifies ex smokers allow it to be decomposed the empirical results highlight the value of the sample separation information and the need to model starting and quitting as separate decisions

do input subsidy programs crowd in or crowd out commercial market development modeling fertilizer demand in a two channel marketing system many governments in developing countries distribute fertilizer at subsidized prices in an effort to stimulate small farmers agricultural productivity and food security prior fertilizer demand studies have largely failed to account for the effects of government programs on farmers commercial purchases using a double hurdle model and nationally representative rural household panel data in zambia we distinguish between these sources and measure the contemporaneous crowding in and crowding out effects of government input programs on commercial fertilizer sales where the private sector is relatively active and average wealth is higher areas seemingly more likely to be targeted by government programs results indicate that subsidies have substantially crowded out the private sector in some cases to the point that such programs could actually lower overall fertilizer use on the other hand in poorer areas where the private sector is relatively inactive subsidies help to generate demand and crowd in private sector retailers empirical studies explicitly modeling farmers fertilizer purchase behavior within a dual marketing framework can provide important insights for agricultural policy discussions in developing countries

endogeneity and sample selection in a model for remittances abstract we estimate a remittance model in which we address endogeneity and reverse causality relationships between immigrants remittances pre transfer income and consumption in order to take into account the fact that a large share of individuals do not remit instrumental variable variants of the double hurdle and heckit selection models are proposed and estimated by limited information ml semiparametric extensions are considered as robustness checks our results for a sample of recent immigrants to australia show that endogeneity is substantial and that estimates obtained by the methods previously employed in the literature may be misleading if given a behavioral interpretation

information and consumer perception of the organic attribute in fresh fruits and vegetables using a double hurdle model on panel data from 3 200 danish households monthly observations for 2002 2007 we study the effects of health related media information on the demand for organic fruit and vegetables we find that negative information about pesticides contained in conventional fruit and vegetables mainly influences the probability of a consumer entering the organic market not the quantities consumed by households that are already active on the organic market positive information that links health and the consumption of organic food influences both steps of the decision process our dataset includes information about consumers media habits which allows us to disentangle the direct effects of media information from the indirect effects of this information as it is disseminated through the population our results suggest that directly obtained information is the main type of information influencing consumers while information loadings by dissemination through the population have almost no effect on consumption

determinants of the price premium for green energy evidence from an oecd cross section using data from a survey of households in 11 oecd countries this paper investigates the determinants of preferences for a completely green residential electricity system three important questions are addressed i how much are households willing to pay to use only renewable energy ii does willingness to pay wtp vary significantly across household groups and countries and iii what drives the decision to enter the hypothetical market for green energy and given entry what drives the level of wtp the analysis here differs from previous studies on green energy in two ways first data and analyses are comparable across countries and second a comprehensive attempt is made to understand 0 wtp and to accommodate using a censored quantile regression cqr framework unobserved heterogeneity the survey data indicate a low wtp at 11 12 of current electric bill this study also addresses a key question how important is income for understanding wtp relative to more attitudinal determinants the effect of income overall appears ambiguous with tobit like models indicating that income is not significant while the cqr indicates that income exerts a significant effect near the center of the distribution of wtp across all frameworks used a key determinant of wtp appears to be environmental attitudes particularly membership in an environmental organization

farmers perceptions and adoption of new agricultural technology evidence from analysis in burkina faso and guinea west africa economists investigating consumer demand have accumulated considerable evidence showing that consumers generally have subjective preferences for characteristics of products and that their demand for products is significantly affected by their perceptions of the product s attributes however the role of farmers preferences in adoption decisions have received very limited attention in adoption studies conducted by economists this paper tests the hypothesis that farmers perceptions of technology characteristics significantly affect their adoption decisions the analysis conducted with tobit models of modern sorghum and rice varietal technologies in burkina faso and guinea respectively strongly supports this hypothesis our results provide a strong case for future adoption studies to expand the range of variables used away from the broad socio economic demographic and institutional factors to include farmers subjective perceptions of the characteristics of new agricultural technologies

production lot sizing with variable production rate and explicit idle capacity cost abstract this paper develops a model for simultaneously determining the optimal run length and the rate of production for a single item as opposed to traditional approaches the item s output rate is treated as a decision variable it is assumed that the production cost per unit is a quadratic function of the production rate in an effort to capture the effect of increased unit cost as a result of deviating from the nominal rate of output for which the system was designed in addition a linear function is incorporated in the proposed model to represent the desirability or undesirability as the case may be of unused capacity the iterative solution procedure developed is illustrated through a numerical example and extensive sensitivity analysis is performed for examining the major tradeoffs involved