wealth volume and stock market volatility case of hong kong 1993 2001 this article attempts to answer the question of whether the gain and loss in property market speculations and rate of information flow play a significant role in stock market volatility in hong kong to test for our wealth volume volatility hypothesis two different measures of volatility absolute absolute value of sd from mean with monthly dimension and conditional egarch are used and results are compared in both measures we find evidence of a statistical presence of a wealth effect on stock market volatility particularly in the investment of luxury class of property in hong kong to account for this result we apply the prospect theory house money effect and the newly developed conditional confidence theory although we fail to establish a volume volatility relationship in our estimation we offer additional dimensions to the explanation of our observation

gasoline demand in europe new insights abstract this study utilizes a panel data set from 14 european countries over the period 1990 2004 to estimate a dynamic model specification for gasoline demand previous studies estimating gasoline consumption per total passenger cars ignore the recent increase in the number of diesel cars in most european countries leading to biased elasticity estimates we apply several common dynamic panel estimators to our small sample results show that specifications neglecting the share of diesel cars overestimate short run income price and car ownership elasticities it appears that the results of standard pooled estimators are more reliable than common iv gmm estimators applied to our small data set

resolving differences in willingness to pay and willingness to accept reply gwendolyn c morrison 1997 raises a logical point regarding our experimental test of the divergence between willingness to pay wtp and willingness to accept wta measures of economic value shogren et al 1994 she argues that our design does not provide a true test of the existence of a fundamental endowment effect since we did not control for the potential of a pivoting indifference map daniel kahneman et al 1990 she concludes that even though our ev idence shows that the mean wtp and wta bids for market goods with close substitutes e g candy bars and coffee mugs converge after market experience the endowment effect might still be alive and well albeit at statisti cally insignificant levels

determinants of import demand for non renewable energy petroleum products empirical evidence from nigeria abstract this study estimated determinants of import demand for refined petroleum products in nigeria for the period 1984 2013 it employed the autoregressive distributed lag ardl bounds test cointegration method and analysed both long run and short run determinants of import demand for total and specific petroleum products in the long run aggregate and sectoral incomes are significant determinants of import of refined kerosene further real effective exchange rate reer aggregate income gdp manufacturing sector s income domestic energy production dep and population growth rate pgr are drivers of import of refined motor spirit moreover reer dep and manufacturing sector s income are propellers of import of refined distillate fuel also reer and total output of petroleum products are major drivers of total import of refined petroleum products short run results show that previous period gdp pgr and manufacturing and service sectors incomes are determinants of import demand for refined kerosene moreover reer gdp previous pgr and manufacturing sector s income exert significant effects on the import of refined motor spirit further significant effects of reer dep previous pgr domestic output of the product and manufacturing and service sectors incomes on the import demand for distillate fuel were found policy implications of the foregoing are articulated in the paper

estimating willingness to pay from survey data an alternative pre test market evaluation procedure closed ended contingent valuation surveys are used to assess demands in hypothetical markets and recently have been applied widely to the valuation of non market environmental resources this int

estimation using contingent valuation data from a dichotomous choice with follow up questionnaire reply abstract our original article proposed that the two yes no willingness to pay wtp responses produced by this survey format should be viewed as a pair of jointly distributed correlated discrete random variables the comparison model the conventional approach to estimation using these types of data contained a programming error correction alters the results from the comparison model but our original claim that estimation by conventional methods can produce misleading inferences if ours is the appropriate specification still stands this is especially true if negative wtp is precluded when e wtp is calculated

the disparity between willingness to accept and willingness to pay measures of value psychologists have long argued that people are much more averse to a loss than attracted to an equivalent gain this behavior termed loss aversion has been formalized by kahneman and tversky 1979 in their reformulation of expected utility theory prospect theory in prospect theory the utility function is replaced by a value function that evaluates changes in income from the current level increases in income are weighted by a relatively small marginal utility decreases in income are weighted by a much larger marginal utility in effect the value function implies that a kink in the relationship between utility and income occurs at the initial income or reference point and that the slope of the utility function for losses in income is steeper than it is for gains in a recent paper knetsch and sinden 1984 report a series of experiments that demonstrate the existence of a large disparity between willingness to accept wta and willingness to pay wtp measures of value they argue that the psychological theory of loss aversion explains this difference economic theory would suggest that individuals who exhibit a large disparity between wta and wtp are perhaps underperceiving the value of gains or overperceiving the value of losses are behaving in an irrational manner and will consequently achieve a lower level of well being than if they behaved in a true utility maximizing manner this would in contrast to loss aversion usually imply near equal values for wta and wtp see willig 1976 further documentation of a larger than expected disparity between wta and wtp has been obtained in surveys asking for the value of a variety of public goods for example cummings brookshire and schulze 1986 document six

energy demand in ghana a disaggregated analysis this paper presents a comprehensive analysis of energy demand in ghana by estimating demand functions for key disaggregated energy components including gasoline diesel liquefied petroleum gas lpg kerosene biomass residual fuel oil rfo and electricity our results show that energy prices income urbanization and economic structure are significant demand drivers of the different energy types in ghana with varying estimated elasticities further there is evidence of high degree of inter fuel substitution in energy demand in ghana particularly from gasoline diesel and kerosene towards lpg consumption we recommend among different policy options a customization of energy price subsidization policies especially on lpg to reduce the unintended beneficiary dilemma or spillover effect of current government policy other policies such as intensification of energy conservation programs and market entry of independent power trading companies to enhance energy service delivery through competition are also discussed

consumer attitudes toward low stake risk in food markets consistency of quality is viewed as important for producers of consumer goods however there is no literature testing the importance of quality consistency on consumers willingness to pay for consumer goods we use an experimental auction market to investigate how inconsistency in tenderness affects consumers willingness to pay for beef we find that most consumers are risk averse with respect to sensory quality both the average tenderness and the variance of tenderness affected the consumers willingness to pay for beef reducing the uncertainty of the sensory quality by categorizing the beef into three tenderness classes increased the total value of the beef by 8

modelling industrial energy demand in saudi arabia abstract between 1986 and 2016 industrial energy consumption in saudi arabia increased by tenfold making it one of the largest end use sectors in the kingdom despite its importance there appear to be no published econometric studies on aggregate industrial energy demand in saudi arabia we model aggregate industrial energy demand in saudi arabia using harvey s 1989 structural time series model showing that it is both price and income inelastic with estimated long run elasticities of 0 34 and 0 60 respectively the estimated underlying energy demand trend suggests improvements in energy efficiency starting from 2010 applying decomposition analysis to the estimated econometric equation highlights the prominent roles of the activity effect the growth in industrial value added and the structure effect the shift towards energy intensive production in driving industrial energy demand growth moreover the decomposition shows how exogenous factors such as energy efficiency helped mitigate some of that growth delivering cumulative savings of 6 8 million tonnes of oil equivalent mtoe between 2010 and 2016 saudi arabia implemented a broad energy price reform program in 2016 which raised electricity fuel and water prices for households and industry the decomposition results reveal that holding all else constant higher industrial energy prices in 2016 reduced the sector s energy consumption by 6 9 a decrease of around 3 0 mtoe saudi policymakers could therefore build on the current policy of energy price reform and energy efficiency standards to mitigate the rate of growth of industrial energy consumption increase economic efficiency and maintain industrial sector competitiveness

treatment of don t know responses in contingent valuation surveys a random valuation model abstract this paper provides a utility theoretic interpretation of don t know dk responses in contingent valuation surveys using a referendum elicitation procedure the random valuation model in this paper assumes that each respondent of a contingent valuation survey has an implicit valuation distribution rather than a single true value as traditionally assumed in his her mind if an offered referendum bid is not clearly different from the mean value of one s valuation distribution the respondent may give a dk answer to the cv referendum question based on this model a maximum likelihood procedure is proposed for estimating respondents willingness to pay for a nonmarket good with referendum contingent valuation data which include dk responses an empirical illustration of this estimation procedure is also provided

the importance of engaging residential energy customers hearts and minds abstract in an attempt to reduce the contribution of residential greenhouse gas emissions the eu has implemented a variety of policy measures the focus has been to promote domestic energy efficiency and ultimately a reduction in residential energy demand in this study we estimate residential energy demand using underlying energy demand trend uedt and asymmetric price responses for 14 european oecd countries between 1978 and 2008 our results support the conclusion that policies to reduce residential energy consumption and the consequent emissions need to account for behavioural lifestyle and cultural factors in order to be effective

demand of automotive fuels in brazil underlying energy demand trend and asymmetric price response abstract this paper analyzes the role of asymmetric price response apr and underlying energy demand trend uedt in the brazilian automotive fuel demand from june 2001 to december 2016 the demand functions of automotive gasoline ethanol and compressed natural gas cng were estimated by employing the autoregressive distributed lag ardl model and harvey s structural time series model stsm the importance of considering a more flexible approach incorporating both uedt and apr was confirmed by the data we identified that consumer response to changes in price is not linear the model also inferred a high substitutability between gasoline and ethanol both in the short and the long term demand for ethanol is more price elastic than demand for gasoline empirical analysis suggests that the decision to refuel a vehicle with cng is not influenced by price variations in ethanol which indicates that competition only occurs between cng and gasoline therefore the inclusion of uedt and apr provides more precise information on the effect of price and income changes on automotive fuel demand such information is relevant for establishing public policies as refinery expansion plannning and co2 emission mitigation

import price uncertainty and the distribution of income in this paper we estimate oil and nonoil import demand functions for the united states under the assumption that import prices are uncertain both import demand functions are formally derived from an expected utility maximization problem treating imports as inputs to the technology the model allows us to test for risk aversion and to assess the impact of uncertainty on the volume of imports gross output and the distribution of income we find that uncertainty leads to a reduction in welfare imports and gross output moreover it hurts labor relatively much more than capital the impact of uncertainty however is found to be quite small

independent private value auctions bidder behaviour in first second and third price auctions with varying numbers of bidders the symmetric equilibrium of third price auctions is characterized it makes a number of contrasting predictions relative to firms and second price auctions bids exceed private values the marginal effects on bids of an increase in private values is greater than one increasing numbers of bidders reduces bids and risk aversion requires bidding below the risk neutral nash equilibrium in the experiment bidders do not always satisfy the point predictions of the theory however the game theoretic models correctly anticipate at least directionally the important effects of the price rule changes copyright 1993 by royal economic society

attitudes to risk and attitudes to uncertainty experimental evidence in a series of experiments the interactions among individual attitudes towards risk and uncertainty the sign of the outcome domain and the way uncertainty is represented are tested this is done in a unified framework eliciting individual values by means of a second price auction results confirm the presence of the well known fourfold pattern of risk attitude risk aversion for gains and risk seeking for losses at high probability and risk seeking for gains and risk aversion for losses at low probability and show that this pattern can also be extended to uncertainty in the valuation of losses the modal pattern is decreasing risk and uncertainty aversion as the probability of loss increases while increasing risk and uncertainty aversion is observed for gains moreover it is found that the size of reaction to uncertainty does not depend on the outcome domain and that it persists in the face of an incentive compatible mechanism to elicit preferences

gasoline demand revisited an international meta analysis of elasticities meta analysis is used to determine if there are factors that systematically affect price and income elasticity estimates in studies of gasoline demand four econometric models are estimated using long run and short run price and income elasticity estimates from previous studies as the dependent variables explanatory variables include functional form lag structure time span national setting estimation technique and other features of the model structure elasticity estimates are found to be sensitive to the inclusion or exclusion of some measure of vehicle ownership static models appear to overestimate short run elasticities underestimate long run price elasticities but pick up the full long run income responsiveness there is variation in the elasticity of demand across countries especially in the short run and gasoline demand appears to be getting more price elastic and less income elastic over time

functional form and aggregate energy demand elasticities a nonparametric panel approach for 17 oecd countries this paper studies whether the commonly used linear parametric model for estimating aggregate energy demand is the correct functional specification for the data generating process parametric and n

u s production technology and the effects of imports on the demand for primary factors we employ a unit cost function in the context of the production theory approach to estimate the allen uzawa effect of various categories of imports on u s primary factors to circumvent curvature related problems often associated with similar studies that do not invoke separability we combine the global imposition of concavity with a symmetric normalized quadratic representation of the unit cost function which remains flexible after curvature enforcing reparameterizations challenging conventional wisdom we find that the positive downstream production related employment effects of the majority of imports are significant enough to produce a detectable net increase in labor demand

unprotective tariffs ineffective liberalization and other mysteries an investigation of the endogenous dimensions of trade policy formation in australia 1 introductionsince its formation as a federation in 1901 australia embraced a fairly comprehensive tariff schedule in relation to imported manufactures 1 tariff rates fluctuated considerably over the years however over the course of the century they remained sufficiently high to earn australian manufacturing the reputation of one of the most heavily protected manufacturing sectors in the industrialized world 2 in recent years a number of liberalization waves have surfaced the most notable of these took place in 1973 1977 1988 1991 and most recently in 1994 with the signing of the uruguay round of the gatt agreement still tariffs remain a principal actor in australia s menu of industrial policies in a recent edition of the annual report of the productivity commission 3 published in november 1999 it is noted that although tariffs have dropped considerably since 1994 they remain an important form of assistance tariff assistance still accounts for around 90 of measured effective assistance to the manufacturing sector 4 p 52 given the pervasiveness of australian tariff policy the significant welfare implications of changes in that policy and the particular importance of international trade for this country ensuing from its idiomorphic cultural resource endowment and geographic characteristics 5 considerable research effort has been invested in the examination of various dimensions of this issue at the forefront of pertinent empirical research two items have attracted considerable interest 1 the host of determinants of the highly dispersed tariff concessions and 2 the impact of liberalization on imports research that falls in the category that examines the former including anderson 1980 conybeare 1984 aislabie 1988 and feaver and wilson 1998 is consistent at varying degrees with the theory of endogenous trade policy formation 6 according to the foundations of this theory tariff concessions may be viewed as public outcomes that facilitate a political equilibrium the mechanics are rather elementary when the profit loss that arises from import competition exceeds the transaction cost of a successful lobbying campaign for protection private interests will undertake such lobbying activities the higher the loss from foreign competition the more fervent the lobbying effort hence an increase in import penetration is likely to trigger greater protection7 trefler 1993 p 139 unlike this line of inquiry the critical causal relationship of interest to studies that fall in the category that investigates item 2 including simmons and smith 1994 relates to the effects of tariff changes on imports rather than the reverse the causal directions of the nature examined by studies that investigate issues 1 and 2 are of course not mutually exclusive higher import penetration increases tariffs and higher tariffs in turn decrease import penetration however despite the simultaneity of these variables studies of australia s trade policies associated with research lines 1 and 2 followed separate paths by only considering unidirectional causal relationships and yet these paths do converge the meeting point perplexing results on the one hand studies of endogenous protection such as anderson 1980 and aislabie 1988 have consistently failed to establish the expected result that an increase in import penetration will lead to higher tariffs on the other studies of trade liberalization often find that tariff reduction shave asurprisingly small effect on imports with a study by simmons and smith 1994 concluding that at least in relation to the examined industry removal of the tariff would have no effect on the level of imports p 57 it is important to note that analogous and equally puzzling findings pertaining to improbably smalle ffect so fliberalization on imports have been identified in the caseofothercountries suchastheunitedstates byanumberofauthors

ambiguity aversion is not universal assuming universal ambiguity aversion an extensive theoretical literature studies how ambiguity can account for market anomalies from the perspective of expected utility based theories we provide a systematic experimental assessment of ambiguity attitudes in different likelihood ranges and in the gain domain the loss domain and with mixed outcomes we draw on a unified framework to elicit preferences across these domains we replicate the usual finding of ambiguity aversion for moderate likelihood gains however when introducing losses or lower likelihoods we observe predominantly ambiguity neutrality or seeking rejecting universal ambiguity aversion

modelling residential electricity demand in the gcc countries abstract this paper aims at understanding the drivers of residential electricity demand in the gulf cooperation council countries by applying the structural time series model in addition to the economic variables of gdp and real electricity prices the model accounts for population weather and a stochastic underlying energy demand trend as a proxy for efficiency and human behaviour the resulting income and price elasticities are informative for policy makers given the paucity of previous estimates for a region with particular political structures and economies subject to large shocks in particular the estimates allow for a sound assessment of the impact of energy related policies suggesting that if policy makers in the region wish to curtail future residential electricity consumption they would need to improve the efficiency of appliances and increase energy using awareness of consumers possibly by education and marketing campaigns moreover even if prices were raised the impact on curbing residential electricity growth in the region is likely to be very small given the low estimated price elasticities unless that is prices were raised so high that expenditure on electricity becomes such a large proportion of income that the price elasticities increase in absolute terms

the role of imports from the newly industrializing countries in u s production this paper examines the relationship among u s imports from the nics imports from developed countries capital and labor in the production of goods for final demand import demand and substitution elasticities are estimated for the period 1960 80 u s imports from the nics are found to be complements with both labor and imports from industrialized countries this indicates that the substitution effect resulting from a reduction in the price of imports from the nics would lead to a net increase in employment multilateral tariff cuts by the united states would increase the demand for nic goods despite a reduction in their preferential tariff margins

a human experiment on inventory decisions under supply uncertainty abstract controlled human experiments are adopted in this paper to investigate the impact of supply uncertainty on buyers inventory management the experiments aim at assessing the impact of one specific source of supply chain uncertainty namely stochastic lead times on inventory holdings and the extent of the bullwhip effect three experimental treatments are run within the framework of the beer game manipulating variability in demand and in lead times results confirm that the bullwhip effect arises in all experimental treatments and that the variance of orders is higher under stochastic lead times analysis of players behaviour in the course of the game suggests that players react to higher uncertainty by holding fewer inventories a behaviour consistent with the predictions of some psychological models of choice under ambiguity

tests of market outcomes with asymmetric valuations of gains and losses smaller gains fewer trades and less value abstract the pervasive finding that individuals value losses more than gains suggests that actual gains from trade and numbers of market exchanges may well be much smaller than would be the case if people s buying and selling prices were equivalent as normally assumed the results of two sets of costless market simulations using actual gain and loss valuations show that the actual gains from exchange and trade volumes are less than half of those expected with conventional assumptions and that completion of all pareto efficient exchanges fail by wide margins to shift entitlements to those willing to pay the most for them these findings suggest the valuation disparity has significant welfare implications and may be a major cause of market stickiness

examining the role of energy efficiency and non economic factors in energy demand and co2 emissions in nigeria policy implications abstract this paper examines the role of energy efficiency and non economic factors such as consumers preferences lifestyles and values which have hitherto been ignored in energy demand and co2 emissions modelling for nigeria we use a structural time series model to estimate various energy demand and co2 intensity models that take account of the aforementioned factors we adopt preferred models from these estimates to analyse how energy demand and co2 emissions in nigeria might evolve by generating three different future scenarios to 2025 we find energy efficiency and non economic factors to influence energy demand and co2 emissions the long run income and price elasticities obtained differ significantly from those in existing studies that have ignored these salient factors in a business as usual scenario the results indicate that energy demand will continue to grow consequently present policies do not sufficiently mitigate aggregate co2 emissions in nigeria the lesson for policy makers is that the extant policies introduced to restrain co2 emissions from a production perspective have to be combined with new policies that influence consumers lifestyles and behaviours develop energy efficient technologies and apply low tariffs on imported energy efficient appliances to drive down co2 emissions from a consumption perspective

quantifying the impact of exogenous non economic factors on uk transport oil demand abstract this paper attempts to quantify the impact of exogenous non economic factors on uk transport oil demand in addition to income price and fuel efficiency by estimating the demand relationship for oil transport for 1960 2007 using the structural time series model from this the relative impact on uk transport oil demand from income price and efficiency are quantified moreover the relative impact of the non economic factors is also quantified based on the premise that the estimated stochastic trend represents behavioural responses to changes in socio economic factors and changes in lifestyles and attitudes the estimated elasticities for income price and efficiency are 0 6 0 1 and 0 3 respectively and it is shown that for efficiency and price the overall contribution is relatively small whereas the contribution from income and non economic factors is relatively large this has important implications for policy makers keen to reduce transport oil consumption and associated emissions but not willing to reduce the trend rate of economic growth taxes and improved efficiency only have a limited impact hence a major thrust of policy should perhaps be on educating and informing consumers to persuade them to change their lifestyle and attitudes and thus reduce their consumption through the non economic instruments route

estimating willingness to pay by risk adjustment mechanism measuring consumers willingness to pay wtp without considering the level of uncertainty in valuation and the consequent risk premiums will result in estimates that are biased toward lower values this research proposes a model and method for correctly assessing wtp in cases involving valuation uncertainty the new method called risk adjustment mechanism ram is presented theoretically and demonstrated empirically it is shown that the ram outperforms the traditional method for assessing wtp especially in a context of a nonmarket good such as a totally new product

the effect of knowledge on the disparity between hypothetical and real willingness to pay the use of a contingent valuation cv method is controversial among economists because it is based on hypothetical rather than real economic choices this paper reports the results of an experiment designed to elicit the real and the hypothetical willingness to pay wtp for a private good the effect of different settings of knowledge direct and indirect of the good on subjects valuation behaviour are investigated the findings show that i a direct knowledge of the good reduces the observed disparity between hypothetical and real wtp and that ii different settings of knowledge generate different perceptions of the characteristics of the good

measuring consumers willingness to pay at the point of purchase abstract economists psychologists and marketing researchers rely on measures of consumers willingness to pay wtp in estimating demand for private and public goods and in designing optimal price schedules existing market research techniques for measuring wtp differ in whether they provide an incentive to consumers to reveal their true wtp and in whether they simulate actual point of purchase contexts the authors present an empirical comparison of several procedures for eliciting wtp that are applicable directly at the point of purchase in particular the authors test the applicability of becker degroot and marschak s 1964 well known incentive compatible procedure for assessing the utility of lotteries to measuring consumers wtp in three studies the authors explore the reliability validity and feasibility of the procedure and show that it yields lower wtp estimates than do non incentive compatible methods such as open ended and double bounded contingent valuation they show experimentally t

revealed and stated preferences for co2 emissions reduction the missing link abstract in this paper we combine data collected from two strands of literature dealing with revealed preferences expressed by conventional vehicle drivers for fuel price variation and stated preferences expressed by consumers for alternative fuel vehicles we employ a meta analysis approach drawing data on 30 primary studies reflecting two important policy interventions which are fuel price taxation and subsidies for alternative fuel vehicles this is a new contribution in environmental and energy economics in that we rescale all primary information into a unique index which captures consumers economic attitude towards carbon dioxide co2 emission reduction in monetary terms focusing on the transport sector we compute the implicit price for the avoidance of a kilogram of co2 emissions named pco2 explaining the existing heterogeneity from several points of view the results of the meta analysis show that contextual and individual characteristics influence the implicit price for co2 emissions avoidance this implicit price is on average positive in the case of revealed preferences studies whereas it is negative in the stated preferences studies although there are some important geographical differences our results show that fuel taxes could be an important additional instrument for environmental policy

diagnostic checking of unobserved components time series models diagnostic checking of the specification of time series models is normally carried out using the innovations that is the one step ahead prediction errors in an unobserved components model other sets of residuals are available these auxiliary residuals are estimators of the disturbances associated with the unobserved components they can often yield information that is less apparent from the innovations but they suffer from the disadvantage that they are serially correlated even in a correctly specified model with known parameters this article shows how the properties of the auxiliary residuals may be obtained how they are related to each other and to the innovations and how they can be used to construct test statistics applications are presented showing how residuals can be used to detect and distinguish between outliers and structural change

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

uncertainty aversion in game theory experimental evidence abstract this paper studies using a laboratory experiment the effects of uncertainty aversion the union of risk aversion and ambiguity aversion on behavior in a normal form game we isolate and identify two components of uncertainty aversion in games the effect of an agent s own uncertainty preferences and effect of the agent s beliefs regarding their opponent s uncertainty preferences uncertainty preferences are correlated with behavior in games induced beliefs about the risk preferences of an opponent have a larger effect on strategic behavior than induced beliefs about an opponent s ambiguity preferences although both components have a significant effect on behavior the results support the hypothesis that strategic uncertainty is an important determinant of strategic behavior and that the response to strategic uncertainty is modulated by subject uncertainty attitudes

import competition from developed and developing countries separate demand equations for imports from less developed countries ldcs and imports from developed countries dcs were estimated for each of eleven representative product groups imports were found to compete quite readily with domestically produced goods with plausible own price and cross price elasticities whereas the quantity of each type of import was found to be quite responsive to changes in the price of us home goods each appears to be less sensitive to the price of the alternative import an explanation that is consistent with this observation and that finds support from detailed industry information is that dcs and ldcs supply goods that are at different stages in the product or technology cycle whereas us producers compete in all submarkets this suggests that trade creation rather than trade diversion provides the predominant inroad for ldcs into the us market 25 references 3 tables

decision theory under ambiguity we review recent advances in the field of decision making under uncertainty or ambiguity we start with a presentation of the general approach to a decision problem under uncertainty as well as the standard bayesian treatment and issues with this treatment we present more general approaches choquet expected utility maximin expected utility smooth ambiguity and so forth that have been developed in the literature under the name of models of ambiguity sensitive preferences we draw a distinction between fully subjective models and models incorporating explicitly some information we review definitions and characterizations of ambiguity aversion in these models we mention the challenges posed by some of the models presented we end with a review of part of the experimental literature and applications of these models to economic settings

effects of ambiguity in market experiments prior studies have shown that individuals are averse to ambiguity in probability many decisions are however made in market settings where an individual s decision is influenced by decisions of others participating in the market in this paper we extend the previous research to evaluate the effect of ambiguity on individual decisions and the resulting market price in market settings we therefore examine an important issue whether ambiguity effects persist in the face of market incentives and feedback two different market organizations the sealed bid auction and the double oral auction were employed the subjects in the experiments were graduate business students and bank executives our results show that the individual bids and market prices for lotteries with ambiguous probabilities are consistently lower than the corresponding bids and market prices for equivalent lotteries with well defined probabilities the aversion to ambiguity therefore does not vanish in market settings our results provide insights into what a manager can expect in bidding situations where the object of the sale oil leases mineral rights involves ambiguity in probability due to for example lack of information or prior experience the results may also be useful in understanding some phenomena in insurance and equity markets

coherent arbitrariness stable demand curves without stable preferences economic theories of valuation generally assume that prices of commodities and assets are derived from underlying fundamental values for example in finance theory asset prices are believed to reflect the market estimate of the discounted present value of the asset s payoff stream in labor theory the supply of labor is established by the tradeoff between the desire for consumption and the displeasure of work finally and most importantly for this chapter consumer microeconomics assumes that the demand curves for consumer products chocolates cds movies vacations drugs and so forth can be ultimately traced to the valuation of pleasures that consumers anticipate receiving from these products because it is difficult as a rule to measure fundamental values directly empirical tests of economic theory typically examine whether the effects of changes in circumstances on valuations are consistent with theoretical prediction for example whether labor supply responds appropriately to a change in the wage rate whether compensated demand curves for commodities are downward sloping or whether stock prices respond in the predicted way to share repurchases however such comparative static relationships are a necessary but not sufficient condition for fundamental valuation e g summers 1986 becker 1962 was perhaps the first to make this point explicitly when he observed that consumers choosing commodity bundles randomly from their budget set would nevertheless produce downward sloping demand curves

venture theory a model of decision weights several theories suggest that people replace probabilities by decision weights when evaluating risky outcomes this paper proposes a model called venture theory of how people assess decision weights it is assumed that people first anchor on a stated probability and then adjust this by mentally simulating other possible values the amount of mental simulation is affected by the absolute size of payoffs the extent to which the anchor deviates from the extremes of 0 and 1 and the level of perceived ambiguity concerning the relevant probability the net effect of the adjustment i e up or down vis i vis the anchor reflects the relative weight given in imagination to values above as opposed to below the anchor this in turn is taken to be a function of both individual and situational variables and in particular the sign and size of payoffs cognitive and motivational factors therefore both play important roles in determining decision weights assuming that people evaluate outcomes by a prospect theory value function kahneman and tversky 1979 and are cautious in the face of risk fourteen predictions are derived concerning attitudes toward risk and ambiguity as functions of different levels of payoffs and probabilities the results of three experiments are reported whereas only a subset of the model s predictions can be tested in experiment 1 all fourteen are tested in experiments 2 and 3 using hypothetical and real payoffs respectively several of the model s predictions are not supported in experiment 2 but almost all are validated in experiments 1 and 3 the failures relate to the exact nature of probability payoff interactions in attitudes toward risk and ambiguity for losses the theory and results are discussed in relation to other experimental evidence future tests of the theory alternative models of risky choice and implications of venture theory for explaining further phenomena

the impact of imports on the demand for labor in australia abstract in this paper we examine the impact of imports disaggregated by origin on the australian demand for labor contrary to widely accepted stylized facts we find evidence that imports from east asia and the pacific stimulate labor demand

preference uncertainty in non market valuation a fuzzy approach in this article we consider uncertain preferences for non market goods but we move away from a probabilistic representation of uncertainty and propose the use of fuzzy contingent valuation we assume that a decision maker never fully knows her own utility function and we treat utility as a fuzzy number the methodology is illustrated using data on forest valuation in sweden fuzzy contingent valuation provides estimates of resource value in the form of a fuzzy number and includes estimates obtained using a standard probabilistic approach