On the use of labels in credence goods markets

We analyze credence goods markets in the case of two firms. Consumers know that the quality of the good varies but do not know which firm is of high quality. First, we show that the high quality producer may be unable to monopolize the market, or even to survive in some cases, in situations where it is efficient and trusted by all consumers. Second, although a label restoring full information improves welfare, it may also reduce both firms’ profits by intensifying competition. Since even the high quality producer may not wish to label its product, in such cases the label must be mandatory. Third, an imperfect label which moves everybody’s beliefs closer to the truth without restoring full information may produce adverse results on market structure and welfare, either by increasing or by reducing the variance of beliefs.      

The Value of Investor Protection: Firm Evidence from Cross-Border Mergers

International law prescribes that in a cross-border acquisitionof 100% of the target shares, the target firm becomes a nationalof the country of the acquiror, and consequently subject toits corporate governance system. Therefore, cross-border mergersprovide a natural experiment to analyze the effects of changesin corporate governance on firm value. We construct measuresof the change in investor protection in a sample of 506 acquisitionsfrom 39 countries. We find that the better the shareholder protectionand accounting standards in the acquiror's country, the higherthe merger premium in cross-border mergers relative to matchingdomestic acquisitions.     

Twitter investor sentiment and corporate earnings announcements

We examine the impact of firm-specific investor sentiment (FSIS) on stock returns for negative and positive earnings surprises. Using a measure constructed from firm-specific tweets, we find that FSIS has a greater impact on stock returns for negative relative to positive earnings surprises. We further show that the impact of FSIS is greater for firms whose valuation is uncertain and difficult to arbitrage. Moreover, we provide evidence of return reversals over post-announcement periods. Our results highlight the importance of FSIS around earnings announcements.     

Market Inertia and the Introduction of Green Products: Can Strategic Effects Justify the Porter Hypothesis?

If, according to Porter’s hypothesis, a “greener” strategy is more profitable, why may its implementation need regulatory intervention? We present a repeated Cournot duopoly where the market may exhibit inertia towards the adoption of even cost-efficient environmental goods. With consumers recognizing that a product is green only with a time lag, if a firm unilaterally adopts the green product initially loses profit due to (a) increased costs (direct effect) and (b) reduced market share (strategic effect). By imposing simultaneous adoption, regulation eliminates (b), thus enhancing long-run profitability. Through a similar mechanism a government can increase its domestic firms’ international market share and profits by forcing them to simultaneously adopt the green product.     

A Gravity Model Forecast of the Potential Trade Effects of EU Enlargement: Lessons from 2004 and Path‐dependency in Integration

This paper uses a gravity model to forecast the potential impact on trade balances and trade patterns of the 2004 EU enlargement. The results suggest that gross trade creation for the accession economies is about 25 per cent of their 2003 trade. Although membership of the EU creates trade it also results in trade diversion; that is, a declining share of accession country exports and imports with non‐EU15 countries. Overall, the trade balances of the accession countries suffer larger trade deficits after accession due to import growth surpassing export growth. The extent of increase in the trade deficit due to accession is inversely related to the level of integration and income of the new members. Hence integration is path‐dependent and the EU should take this into account when preparing for further enlargements to the Balkans and Southeast Europe.     

Information Asymmetry and the Bid‐Ask Spread: Evidence From the UK

Abstract:   The generally accepted factors that determine the bid‐ask spread are volatility, trading volume and market value ( Atkins and Dyl, 1997 ; Glosten and Harris, 1988 ; and Menyah and Paudyal, 2000 ). Following Kim and Verrecchia (1994) we include a measure of the disagreement in analysts' earnings forecasts in our model of the bid ask spread. This measure serves as a proxy for the informational disadvantage of market makers with respect to informed traders. Market makers respond to the additional risk by increasing the bid‐ask spread. We find that the disagreement amongst analysts is significant for horizons up to and including six months (and with the hypothesised sign) in explaining FTSE 100 company spreads, rendering strong empirical support for our model.     

On the consequences of state dependent preferences for the pricing of financial assets

This paper introduces state dependent utility into the standard Mehra and Prescott [J. Monet. Econ. 15 (1985) 145] economy by allowing the representative agent's coefficient of relative risk aversion to vary with the underlying economy's growth rate. Existence of equilibrium is proved and its asymptotic properties analyzed. This generalization leads to level dependent marginal rates of substitution, a property that sharply distinguishes this model from the standard construct. For very low coefficients of relative risk aversion, the equilibrium risk free and risky security returns are demonstrated to have volatilities and an associated equity premium that substantially exceed what is found in the data. This provides a contrasting perspective on the classic “equity premium puzzle.”     

What Do Unions Do to Productivity? A Meta‐Analysis

The impact of unions on productivity is explored using meta-analysis and meta-regression analysis. It is shown that most of the variation in published results is due to specification differences between studies. After controlling for differences between studies, a negative association between unions and productivity is established for the United Kingdom, whereas a positive association is established for the United States in general and for U.S. manufacturing.     

The dynamics between stock returns and mutual fund flows: empirical evidence from the Greek market

This paper examines the interaction between mutual fund flows and stock returns in Greece. Specifically, we investigate the possibility of a causality mechanism through which mutual funds flows may affect stock returns and vice versa. The statistical evidence derived from the error correction model indicates that there is a bidirectional causality between mutual fund flows and stock returns. Cointegration results show that mutual funds flows cause stock returns to rise or fall. This may be explained by the fact that, in Greece, equity mutual funds are obliged by law to invest a certain percentage of their cash in stocks. Thus, inflows and outflows of cash in equity funds seem to cause higher and lower stock returns in Greek stock market.     

Trends in tourism planning and development

A number of tourism planning principles is considered and reference is made to the methodology of ekistics (the study of human settlements). Patmos, a Greek island, is taken as a case study, and the results of this tourism project are assessed in relation to the planning principles and methodology outlined.