unit roots and structural change an application to us house price indices this paper employs time series analysis to investigate the price dynamics of the house price indices included in the s p case shiller composite10 index and the validity of the ripple effect following the approach outlined by meen 1999 more specifically the paper first considers the time series properties of the capital gain from the sale of houses that is it examines whether shocks to the capital gain series produce permanent or transitory changes in general the findings lack uniformity and depend upon the assumptions imposed by the testing procedures secondly it considers the time series properties of the ratio of regional house price indices to the composite10 index that is it examines whether shocks to these house price ratios exhibit trend reversion the tests of this ripple effect also display conflicting evidence

the walking debt crisis abstract this article sheds light on the question whether arising sovereign credit risk in the emu has been triggered by the us subprime crunch by adapting recent econometric methodologies suggested in the related field of speculative bubbles we find clear evidence for fast diverging and even explosive behavior of emu government bond yields of peripheral countries relative to germany during the financial and the european debt crisis this might be caused by flight to quality effects to german government bonds coincident with the collapse of lehman brothers and by a loss of confidence in the fiscal stability of greece ireland italy portugal and spain during the european debt crisis first we find compelling evidence for bubbles in the dow jones equity real estate investment trusts reits index which serves as a weekly measure of economic activity in the north american real estate sector second in our main analysis we test whether the collapsing bubble in the housing market triggered the diverging government bond yields during two crisis regimes our findings indicate that this was the case in the course of the financial crisis but not during the emu sovereign debt crisis these results suggest that the severe fiscal problems in peripheral countries are homemade rather than imported from the us

noise versus access the impact of an airport in an urban property market the effects of a major airport are unlikely to exhibit a uniform spatial distribution the benefits to industries and individual households may extend well beyond the local economy whereas many of the costs are spatially concentrated in the immediate environment in particular the problems of noise and traffic generation can be expected to fall principally upon adjacent populations this paper addresses the general question of whether the costs to local economies of airport proximity which are in the nature of externalities outweigh the benefits of access employment and improved infrastructure based on data relating to manchester airport and its surrounding areas the specific approach adopted in the paper involves an investigation of the extent to which such proximity effects are capitalised into residential property prices our results provide some evidence to suggest that circumstances may exist where positive attributes such as improved access and employment opportunities may be more highly va

detecting periodically collapsing bubbles a markov switching unit root test this paper addresses the problem of testing for the presence of a stochastic bubble in a time series in the case that the bubble is periodically collapsing so that the asset price keeps returning to the level implied by the market fundamentals as this is essentially a problem of identifying the collapsing periods from the expanding ones we propose using a generalization of the dickey fuller test procedure which makes use of the class of markov regime switching models the potential of the new methodology is illustrated via simulation and an empirical example is given copyright 1999 john wiley sons ltd

are airports engines of economic development a dynamic panel data approach this paper applies the dynamic panel data generalized method of moments estimator to the data on commercial passenger air traffic at all primary airports in the united states to evaluate the impact of traffic volume and number of destinations served with non stop flights on the key indicators of regional economic development we find that number of destinations served with non stop flights has a much clearer and more robust impact on level of employment number of business establishments and average wage in the region passenger traffic volume affects employment and average wage but not number of establishments at the sample median connecting a metropolitan statistical area with an extra destination keeping everything else constant creates 98 jobs and facilitates the opening of four new business establishments that employ people the corresponding numbers for the sample mean are 223 jobs and 15 businesses the impact of air travel on regional economic development is influenced by competition on the

rational ponzi games when can a government run a rational ponzi game i e issue debt and never pay back any interest or principal the transversalit y condition of each individual implies that such schemes require an i nfinity of lenders given this horizons are unimportant ponzi games cannot be ruled out by assuming that agents have infinite horizons the authors point out both the basic similarity of and some key diff erences between rational ponzi games and asset price bubbles or fiat money regarding international debt the analysis implies that what matters for the feasibility of rational ponzi games are conditions in the lenders not the borrowers economy copyright 1988 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

comments rational bubbles during poland s hyperinflation implications and empirical evidence by m funke s hall and m sola a number of papers have tested for rational bubbles in the post world war i hyperinflation in germany the present paper henceforth fhs does so in poland around the time of the big bang it finds some evidence that the main determination of the hyperinflation was a rational bubble but cautiously notes that conventional structural models might also explain the hyperinflation i salute their technically sophisticated investigation of this interesting question but in the end find their evidence distinctly less suggestive of bubbles than do they this evidence comes from a nice extension of techniques suggested by diba and grossman 1984 and hamilton and whiteman 1985 and applied to the german hyperinflation by hamilton and whiteman 1985 using the cagan model that paper noted that in the absence of bubbles prices will have the same order of integration as does money if money is say z 2 so that what is stationary is changes in the growth rate of money but not the growth rates themselves then prices should be z 2 as well but bubbles cause explosive growth so no level of differencing will induce stationarity in a variable driven wholly or even in part by a bubble hamilton and whiteman 1985 found that prices and money appeared to be z 2 in the german hyperinflation and concluded that bubbles probably were not present evans 1991 in turn pointed out that if a bubbles periodically grow and collapse and b there are not a whole lot of observations during which the bubble was growing the hamilton and whiteman 1985 test will likely fail to find bubbles and tests are likely to find that prices and money are

are there multiple bubbles in the ethanol gasoline price ratio of brazil this paper tests for the existence of bubbles in the ethanol gasoline price ratio in brazil from 2000 to 2012 using right tailed adf tests results suggest the existence of two bubbles one which has already burst during the re election of president lula and one which has been ongoing since 2010 thus corroborating empirical and anecdotal evidence in the brazilian sugarcane industry freezing gasoline prices not only depressed ethanol prices but also depressed investments in new sugarcane crops and distillation plants

what drives returns to euro area housing evidence from a dynamic dividend discount model abstract we apply a dynamic dividend discount model to analyse housing returns for eight euro area countries comprising over 90 of euro area gdp both individually and as a panel a vector autoregressive model var is estimated for four variables excess return to housing rents the real interest rate and real disposable per capita income using quarterly data over the period 1978 2009 this empirical investigation which allows for a decomposition of house price movements into movements in rent cash flow and expected return news components indicates that the bulk of the variability of euro area house price movements can be attributed to movements in fundamentals there remains nonetheless an important but less sizeable influence of market wide or expected return variations in house prices country specific estimation indicates considerable heterogeneity around the euro area result both for what concerns long term impacts and dynamics notably changes in expected returns play a relatively strong role in the house prices of ireland and spain

identification of house price bubbles using user cost in a state space model this article studies how much variation in house prices results from nonfundamental factors we propose a relative valuation approach to quantifying a bubble in housing by incorporating the housing user cost into a state space model we find that uk house prices were undervalued from january 1995 to may 2001 and subsequently moved into a bubble over the period to october 2012 our results support the bounded rationality hypothesis in the long run however we also find that the irrational and the rational expectation hypotheses can coexist in the short run when explosive bubbles are driven by price dynamics

explosive dynamics in house prices an exploration of financial market spillovers in housing markets around the world abstract asset prices in general and real house prices in particular are often characterized by a nonlinear data generating process which may display at times mildly explosive behavior in this paper using the recursive right tailed unit root test methodology proposed by phillips et al 2015a b we find widespread evidence of episodes of explosiveness or exuberance in international real house prices and establish a timeline of such episodes for a panel of 23 countries between first quarter 1975 and fourth quarter 2015 motivated by theory we adopt a dynamic panel logit probit framework to empirically investigate whether macro fundamentals and more specifically financial variables help predict such episodes of exuberance in international real house prices we find that interest rate spreads and real stock market growth together with standard housing fundamentals growth in real personal disposable income per capita and inflation are indeed among the best predictors furthermore we argue that financial developments in other asset markets can play a significant role as a trigger in the emergence of explosiveness in housing markets

exchange rate bubbles fundamental value estimation and rational expectations test abstract we propose a model of periodically collapsing bubbles which extends the van norden 1996 model and nests it by considering a non linear specification for the bubble size in the survival regime and the endogenous determination of the level of the fundamental value of the stochastic process they allow us to test for rationality in the formation of expectations and remove the arbitrariness of exogenously setting the level of the fundamental value this general model is applied to the exchange rate of the brazilian real to the us dollar from march 1999 to february 2011 the futures market exchange rate is used as a proxy of its expected future value and three different structural models are considered for the determination of the fundamental value the first two imply that the exchange rate satisfies either purchasing power parity ppp or a modified version of it the third structural model is a version of the monetary model of exchange rate determination fitted to the period under consideration we obtain the maximum likelihood estimate of the parameters of the models explore the properties of the errors test its restricted versions and compare the three specifications for the fundamental we find that the models we propose fit well the data and are useful in the heuristic interpretation of the exchange rate movements of the period finally we select the structural models that display the best performance according to several criteria

are there bubbles in the sterling dollar exchange rate new evidence from sequential adf tests there has been mixed evidence regarding the existence of rational bubbles in the foreign exchange markets this paper introduces recently developed sequential unit root tests into the analysis of exchange rates bubbles we find strong evidence of explosive behavior in the nominal sterling dollar exchange rate however this explosive behavior should not be simply interpreted as evidence of rational bubbles as we show that it might be driven by the relative prices of traded goods

the fragility of sunspots and bubbles abstract expectational stability e stability is used to examine the multiplicity of solutions in a range of rational expectations models of interest including muth s inventory model and an overlapping generations model in these model it is found that sunspot and other rational bubble solutions are either e unstable or weakly but not strongly e stable

quasi experimental evidence on the effect of aircraft noise on apartment rents inferring the implicit price of an environmental good hinges on ceteris paribus conditions that are often hard to justify this paper uses an unexpected change in flight regulations as source of exogenous variation and identifies aircraft noise effects from price adjustments in the market for rental apartments controlling for spatial and apartment heterogeneity we find that aircraft noise reduces apartment rents by about 0 5 per decibel our results indicate i that noise discounts are overestimated in cross sectional studies because aircraft noise tends to be negatively correlated with omitted neighborhood and housing amenities and ii that noise effects are unlikely to be constant over the entire noise range

a new approach to decomposition of economic time series into permanent and transitory components with particular attention to measurement of the business cycle abstract this paper introduces a general procedure for decomposition of non stationary time series into a permanent and transitory component allowing both components to be stochastic the permanent component is shown to be a random walk with drift and the transitory or cyclical component is a stationary process with mean zero the decomposition methodology which depends only on past data and therefore is computable in real time is applied to the problem of measuring and dating business cycles in the portwar u s economy we find that measured expansions and contractions are of roughly equivalent duration and that our dating of cyclical episodes tends to lead the traditional nber dating and to a lesser extent the growth cycle chronology of zarnowitz and boschan 1977

hedonic price indexes for residential housing a survey evaluation and taxonomy every house is different it is important that house price indexes take account of these quality differences hedonic methods which express house prices as a function of a vector of characteristics such as number of bedrooms and bathrooms land area and location are particularly useful for this purpose i consider here some developments in the hedonic methodology as it is applied in a housing context that have occurred in the last three decades a number of hedonic house price indexes are now available however it is often difficult to see how these indexes relate to each other for this reason i attempt to impose some structure on the literature by developing a taxonomy of hedonic indexes and then show how existing indexes fit into this taxonomy also discussed are some promising areas for future research in the hedonic field in particular greater use needs to be made of spatial econometric and nonparametric methods to exploit the increased availability of geospatial data the main criticisms of the hedonic approach are evaluated and compared with those of the repeat sales and stratified median methods the overall conclusion is that the advantages of the hedonic approach outweigh its disadvantages

bubbles in us regional house prices evidence from house price income ratios at the state level we investigate the presence of bubbles in the us house price income ratio at the state level by applying the recent time series based econometric test to data from january 1975 to december 2014 we

when will occur the crude oil bubbles abstract in this paper we apply a recursive unit root test to investigate whether there exist multiple bubbles in crude oil price the method is best suited for a practical implementation of a time series and delivers a consistent date stamping strategy for the origination and termination of multiple bubbles the empirical result indicates that there exist six bubbles during 1986 2016 when the oil price deviate from its intrinsic value based on market fundamentals specifically oil price contains the fundamentals and bubble components the dates of the bubbles correspond to specific events in the politics and financial markets the authorities should actively fight speculative bubbles or just observe their evolutions and speculation activities may decrease which is favour of the stabilisation of the staple commodities including crude oil price these findings have important economic and policy implications to recognise the cause of bubbles and take corresponding measures to reduce the impact on the real economy cause of the fluctuation of crude oil price

airport expansions and property values the case of chicago o hare airport abstract the paper adds to the empirical literature by providing up to date estimates of the effect of airport noise on property values around one of the world s busiest airports chicago o hare the results indicate that home values were about 9 lower within a 65 db noise contour band of o hare in 1997 opponents of airport expansions argue that increased noise will reduce property values and lower tax bases the results of this paper suggest that aircraft are becoming so much quieter that the airport can be expanded without causing a drop in local property values or tax bases estimates suggest that house prices may rise by as much as 284 6 million in the densely populated area around o hare after a new runway is added to the airport

speculative bubbles in u k house prices some new evidence in this article we test the view widely held among both academics and practitioners that speculative bubbles have characterized the time series behavior of u k house prices in recent times we motivate our empirical analysis using a stylized overlapping generations model which generates a housing demand function of the form assumed by a large literature illustrating how rational bubbles may arise as a solution to the house price determination equation employing two recently developed econometric techniques specifically designed to test for rational bubbles we then provide empirical evidence for the existence of bubbles in u k house prices over the sample period 1983 2002 a widely held view among academics and practitioners is that the time series behavior of house prices of several major industrialized countries may have been characterized by explosive bubbles which are not present in the underlying fundamentals and which therefore may drive an explosive wedge between house prices and their fundamental determinants in particular with regard to the united kingdom a large empirical literature has studied the determinants of the two booms experienced by house prices in the early 1970s and late 1980s providing some tentative evidence in support of the view that speculation on expected future house prices might have been an important force driving actual house prices see inter alia hendry 1984 muellbauer and murphy 1997 renaud 1997 teraisvirta 1998 more recently concerns of an ongoing house price bubble in the united kingdom have been repeatedly raised by the press and policymakers these concerns are well summarized in the following quote it will be different this time those are the most dangerous words in investment and in economic policy the u k is yet again in an unbalanced expansion behind it lies explosive household

misspecification versus bubbles in hyperinflation data monte carlo and interwar european evidence abstract this paper analyzes some new tests of the cagan hyperinflation money demand model which have several advantages relative to those in the literature they do not confound specification error with rational bubbles can be implemented with a linear procedure and are frequently able to detect periodically collapsing bubbles which have challenged existing tests after a monte carlo analysis the tests are applied to data from hyperinflations in austria germany hungary and poland evidence of misspecification is found for austria germany and hungary while the model without a rational bubble component appears to fit the data for poland

bubbles in food commodity markets four decades of evidence abstract we use daily prices from individual futures contracts to test whether speculative bubbles exist in 12 agricultural markets and to identify whether patterns of bubble behavior exist over time the samples begin as far back as 1970 and run through 2011 the findings demonstrate that all 12 agricultural markets experienced multiple periods of price explosiveness however bubble episodes represent a very small portion between 1 5 and 2 of price behavior during the 42 year period in addition most bubbles are short lived with 80 90 lasting fewer than 10 days though receiving far less attention negative bubbles contribute significantly to price behavior accounting for more than one third of explosive episodes markets over react during both positive and negative explosive episodes leading to a correction as they return to a random walk this adjustment back to fundamental values is most pronounced with positive bubbles particularly in the earlier part of the sample while the magnitudes of the corrections are generally small there were a few instances of significant increases in prices and large over reactions most notably in the softs e g cocoa 1973 coffee 1994 cotton 2010 we also find that explosive periods did not become more common or last longer in the second half of the sample period and that the most recent bubble episodes may not have been as severe as in mid 1970s

econometric regime shifts and the us subprime bubble using aggregate quarterly data for the period 1975 q1 2010 q4 i find that the us housing market changed from a stable regime with prices determined by fundamentals to a highly unstable regime at the beginning of the previous decade my results indicate that these imbalances could have been detected with the aid of real time econometric modeling with reference to stiglitz s general conception of a bubble i use the econometric results to construct two bubble indicators which clearly demonstrate the transition to an unstable regime in the early 2000s the indicators are shown to granger cause a set of coincident indicators and financial in stability measures finally it is shown that the increased subprime exposure during the 2000s can explain the econometric breakdown i e the housing bubble may be attributed to the increased borrowing to a more risky segment of the market copyright 2013 john wiley sons ltd

rational bubbles during poland s hyperinflation implications and empirical evidence abstract it has been argued that the polish hyperinflation at the end of the eighties was too excessive to be attributed to market fundamentals only in this paper a range of indirect non structural and structural tests for rational exploding deterministic and stochastic bubbles are carried out we adopt a new strategy based on the work of hall and sola 1993a which allows for the possibility of switching regimes in the time series properties of the data to allow for both indirect tests and structural tests for the presence of stochastic bubbles

expectations and bubbles in asset pricing experiments abstract we present results on expectation formation in a controlled experimental environment in each period subjects are asked to predict the next price of a risky asset the realized market price is derived from an unknown market equilibrium equation with feedback from individual forecasts in most experiments prices deviate from the benchmark fundamental and bubbles emerge endogenously these bubbles are inconsistent with rational expectations and seem to be driven by trend chasing behavior or positive feedback expectations of the participants we also analyze individual predictions of participants and find that participants within a group tend to coordinate on a common prediction strategy

multiple bubbles in the european union emission trading scheme abstract the european union emission trading scheme eu ets is the first large scale co 2 emission trading system in the world carbon allowances are financial assets potentially vulnerable to the behavior of traders and investors in fact the carbon price has been quite volatile since the inception of the market and it has recently hit very low values however to date no work exists to evaluate whether volatility and price spikes are due to episodes of speculation and price bubbles our paper fills this gap we use the recent approaches developed by phillips and yu 2010 phillips et al 2011 and phillips et al 2015a 2015b who propose a recursive right sided unit root approaches to detect and date stamp mildly explosive behaviors and carbon market exuberance we complement this methodology by using the wild bootstrap procedure by goncalves and kilian 2004 to control for the heteroschedasticity of carbon price data analyzing the eu ets front month contract price from 2005 to 2014 we find different episodes of price bubbles these episodes are not explained by similar behavior of the fundamentals but seem related to energy and environmental policy announcements our results can provide insightful policy implications in the context of the actual carbon market reform as well as the implementation of stricter financial regulations rules to co 2 trading

the price of silence markets for noise licenses and airports this article presents a market design for the management of noise pollution created by aircraft traffic around airports a local market for noise licenses allows noise generators to compensate noise victims and to meet social acceptability we show that the market allows the market designer to implement the social planner s optimal allocation of flights as long as the latter does not put too high a weight in his her objective function on firms profits compared to the disutility of noise pollution the fact that local representatives of noise victims may be strategic players does not fundamentally alter this finding because of the market auctioneer s information constraints noise licenses are likely to distribute windfall gains to residents which alters the urban structure in the long run

fads versus fundamentals in farmland prices comment a trivariate vector autoregression time series process based on a present value land price model is used to decompose iowa farmland prices into fundamental and non fundamental components a recent study by falk and lee 1998 found that non fundamental shocks are an important source of volatility in farmland prices and it was interpreted that these price movements were due to fads not speculative bubbles we argue to the contrary and use a regime switching model to provide evidence that supports a partially collapsing bubble story of the dynamics of iowa farmland prices

commercial real estate and equity market bubbles are they contagious to reits this paper uses a regime switching approach to determine whether prices in the us stock direct real estate and indirect real estate markets are driven by the presence of speculative bubbles the results show significant evidence of the existence of periodically partially collapsing speculative bubbles in all three markets a multivariate bubble model is then developed and implemented to evaluate whether the stock and real estate bubbles spill over into reits the underlying stock market bubble is found to be a stronger influence on the securitised real estate market bubble than that of the property market furthermore the findings suggest a transmission of speculative bubbles from the direct real estate to the stock market although this link is not present for the returns themselves

agricultural price transmission across space and commodities during price bubbles this article investigates agricultural price transmission during price bubbles the empirical approach concerns the horizontal transmission of cereal prices both across different market places and across different commodities the trade policy intervention put forward to mitigate the impact of price exuberance is considered the analysis is performed using italian and international weekly spot cash price data over years 2006 2010 a period of generalized turbulence of agricultural markets firstly the properties of price time series are explored then interdependence across prices is specified and estimated by adopting appropriate cointegration techniques results suggest that the bubble had only a slight impact on the price spread and the temporary trade policy measure when effective has limited this impact

a test for speculative bubbles in the sterling dollar exchange rate 1981 84 the u s dollar price of the u k pound sterling is tested for a speculative bubble defined as a period with a nonzero median in excessreturns a nonparametric procedure is developed which controls for data mining over the period of flexible exchange rates and finds a negative bubble in the excess return to holding sterling rather than dollar assets during the period 1981 84 possible interpretations arebootstrap equilibria rational bubbles nonsym metric fundamentals and nonrational expectations copyright 1986 by american economic association

the theory of rational bubbles in stock prices free disposal of equity which directly rules out the existence of negative rational bubbles in stock pric es also imposes theoretical restrictions on the possible existence o f positive rational bubbles the analysis in this paper shows that a positive rational bubble can start only on the first date of trading of a stock thus the existence of a rational bubble at any date woul d imply that the stock has been overvalued relative to market fundame ntals since the first date of trading and that prior to the first da te of trading the issuer of the stock and potential stockholders who anticipated the initial pricing of the stock expected that the stock would be overvalued copyright 1988 by royal economic society

fundamental flaws of social regulation the case of airplane noise abstract this article provides an economic assessment of federal regulatory policy toward airplane noise as encapsulated in the 1990 airport noise and capacity act anca this act mandated the elimination of certain aircraft such as the boeing 727 and dc 9 from all u s airports by the end of 1999 to meet quieter noise requirements we find that the present discounted benefits of the anca reflected in higher property values for homeowners fall 5 billion short of the anca s cost to airlines reflected in the reduced economic life of their capital stock more fundamentally we find that the net benefits that could have been generated by an economically optimal airplane noise tax amount to only 0 2 billion present value it appears that noise regulations have generated substantial costs to society when in fact there was little justification on efficiency grounds for regulatory intervention in the first place

conditional testing for unit root bilinearity in financial time series some theoretical and empirical results abstract this paper introduces a t ratio type test for detecting bilinearity in a stochastic unit root process it appears that such a process is a realistic approximation for many economic and financial time series it is shown that under the null of no bilinearity the test statistics are asymptotically normally distributed proofs of these asymptotic normality results require the gihman and skorohod theory for multivariate diffusion processes finite sample results describe speed of convergence power of the tests and possible distortions to unit root testing which might appear due to the presence of bilinearity it is concluded that the two step testing procedure suggested here the first step for the linear unit root and the second step for its bilinearity is consistent in the sense that the size of the step one test is not affected by the possible detection of bilinearity at step two the empirical part of the paper describes testing unit root bilinearity for 65 garch adjusted stock market indices from mature and emerging markets it is shown that for at least 70 of these markets the hypothesis of no unit root bilinearity has to be rejected

pitfalls in testing for explosive bubbles in asset prices a number of studies e g robert j shiller 1981 olivier j blanchard and mark watson 1982 kenneth d west 1988 have argued that dividend and stock price data are not consistent with the market fundamentals hypothesis in which prices are given by the present discounted values of expected dividends these results have often been construed as evidence for the existence of bubbles or fads related arguments have been made with respect to gold bonds and foreign exchange a major problem with such arguments e g james hamilton and charles whiteman 1985 is that apparent evidence for bubbles can be reinterpreted in terms of market fundamentals that are unobserved by the researcher behzad t diba and herschel i grossman 1984 1988b and hamilton and whiteman 1985 have recommended the alternative strategy of testing for rational bubbles by investigating the stationarity properties of asset prices and observable fundamentals 1 in essence the argument for equities is that if stock prices are not more explosive than dividends then it can be concluded that rational bubbles are not present since they would generate an explosive component to stock prices 2 using unit root tests autocorrelation patterns and cointegration tests to implement this procedure diba and grossman 1988b p 529 state that the analysis supports the conclusion that stock prices do not contain explosive rational bubbles this paper shows that the above battery of tests is in fact unable to detect an important class of rational bubbles the point is demonstrated by constructing rational bubbles that appear to be stationary when unitroot tests are applied even though they are explosive in the relevant sense simulations show that when such bubbles are present stock prices will not appear to be more explosive than dividends on the basis of these tests even though the bubbles are substantial in magnitude and volatility the presence of rational bubbles in actual stock prices thus remains an open question

housing values census estimates disequilibrium and the environmental cost of airport noise a case study of atlanta abstract two unresolved issues about airport noise property value studies are addressed the first issue concerns the comparability of empirical results from aggregate census data vs individual sales values and the second issue concerns the homogeneity and stability of results from housing price studies over time and across markets hedonic price models from two sets of data for a residential area near the atlanta international airport are estimated at two points in time 1979 1980 and 1970 1972 the available data yield similar estimates of the noise discount over time and from the prices of individual house sales vs owner appraised census block aggregates

airline traffic and urban economic development this paper provides new evidence on the link between airline traffic and employment in us metropolitan areas the evidence confirms the common view that good airline service is an important factor in urban economic development frequent service to a variety of destinations reflected in a high level of passenger enplanements facilitates easy face to face contact with businesses in other cities attracting new firms to the metro area and stimulating employment at established enterprises the empirical results show that a 10 per cent increase in passenger enplanements in a metro area leads approximately to a 1 per cent increase in employment in service related industries however airline traffic has no effect on manufacturing and other goods related employment suggesting that air travel is less important for such firms than for service related businesses these estimates are generated controlling for reverse causality between employment and traffic the results imply that expansion of chicago s o hare ai

fundamentals uncertainty bubbles and exchange rate dynamics abstract using a monetary model of exchange rate determination we study exchange rate dynamics with bubbles which depend on stochastic market fundamentals these dynamics can be either stochastically stable or unstable and either monotonic or non monotonic including cyclic in an extreme case they converge with probability one and exhibit cyclic movements implications for the analysis of time dependent regime shifts are also explored exchange rates with bubbles are likely to appear less volatile than the fundamentals in finite samples both the variance bounds and cointegration tests might thus be ineffective in testing the absence of bubbles under fundamentals uncertainty

crypto currency bubbles an application of the phillips shi yu 2013 methodology on mt gox bitcoin prices the creation of bitcoin heralded the arrival of digital or crypto currency and has been regarded as a phenomenon since its introduction it has experienced a meteoric rise in price and rapid growth accompanied by huge volatility swings and also attracted plenty of controversies which even involved law enforcement agencies hence claims abound that bitcoin has been characterized by bubbles ready to burst any time e g the recent collapse of bitcoin s biggest exchange mt gox this has earned plenty of coverage in the media but surprisingly not in the academic literature we therefore fill this knowledge gap we conduct an econometric investigation of the existence of bubbles in the bitcoin market based on a recently developed technique that is robust in detecting bubbles that of phillips et al 2013a over the period 2010 2014 we detected a number of short lived bubbles most importantly we found three huge bubbles in the latter part of the period 2011 2013 lasting from 66 to 106 days with the

moral hazard asset price bubbles capital flows and the east asian crisis the first tests we examine the view that the recent east asian crisis was precipitated by bursting asset price bubbles which had been fuelled by strong capital inflows that were largely the result of a moral hazard problem in financial intermediation and was exacerbated by a vicious cycle of asset price deflation and incipient and actual capital flight we find evidence of stock market bubbles in all east asian economies examined although not in australia we examine various categories of capital flows to these countries and find in particular relatively high reversible components in portfolio flows to east asian economies