The Dependency of Rent-to-Price Ratio on Appreciation Expectations: An Empirical Approach

Using two unique datasets from different neighborhoods in Houston, TX, which provide us data for houses with similar structure (or even same house), we test the standard model of housing values to determine how the formation of households’ expectations regarding price appreciations affects housing market prices. Using these datasets we are able to address previously encountered problems in the literature such as the lack of adjustment for quality differences, the connection between prices and rents for the different type of housing, and the spatial distribution of housing. We test whether consumer behavior leads to potentially unstable market conditions with price bubbles. Our results suggest that appreciation expectations are based on past price appreciation but at the same time they depend on the fundamental factors such as, locational and structural. These findings show a hybrid consumer behavior of rational and adaptive expectations. Finally, we show how these expectations could sometimes lead to unstable price levels.     

Kombilöhne gegen Erwerbsarmut: Warum die USA erfolgreicher sind als Deutschland

“Make work pay” strategies are an integral part of labour market policy instruments in developed countries. There are two considerations behind these measures. Firstly, subsidizing employment at the bottom of the income distribution should motivate the unemployed to accept jobs with lower market wages. Secondly, the wage supplement should increase the living standards of the recipients and reduce the risk of poverty. The U.S. EITC and the German UB II based on these two goals. Our paper begins with an overview of these two wage top-up schemes. This is followed by an empirical evaluation of the two instruments regarding their capacity to prevent in-work poverty and to strengthen labour market participation. The EITC obtains better results compared to UB II in both regards.     

Estimating market power using a composed error model

We present a maximum likelihood based composed error model to estimate market powers of firms. In our model, the stochastic part of the supply relation includes two random components: the conventional two‐sided error term and a random term, which is capturing firm‐specific conducts. Moreover, we provide a generalization of scaled Stevenson stochastic frontier model in the context of doubly truncated normal distributions. We estimate the market powers of Chicago based airlines as an empirical example that is showing the applicability of our estimation procedure.     

Why do large shareholders adopt a short‐term versus a long‐term investment horizon in different firms?

I ask why the same large shareholders have different investment horizons. Using data for 1998–2013, I examine four fundamental firm policies for their potential influence on blockholders’ investments with different time horizons. The panel ordinary least squares, difference‐in‐difference (using the Sarbanes‐Oxley Act), logistic, and dynamic generalized method of moments regression analyses reveal that blockholders adopt a short‐term horizon in smaller firms with a less independent board, high leverage, and high dividends while the same blockholders keep their investments longer in firms with a more independent board and low dividends. Under various economic conditions, different firm characteristics gain importance in blockholders’ decision on short‐term versus long‐term investments.     

Manipulation Through Biased Product Reviews*

We study a signal-jamming model of product review manipulation in which rational consumers consult product reviews and price to better estimate a product's quality, and a firm, whose quality is either high or low, chooses its price and how much bias to insert into product reviews. We show that both firm types always exert positive effort to manipulate product reviews, and, depending on the equilibrium price level, one or both of them can increase its sales. When the high-type firm exerts more effort than the low-type, review manipulation benefits consumers by raising [lowering] their demand for the high-quality [low-quality] product.     

Ascending Combinatorial Auctions with Risk Averse Bidders

Ascending combinatorial auctions are being used in an increasing number of spectrum sales worldwide, as well as in other multi-item markets in procurement and logistics. Much research has focused on pricing and payment rules in such ascending auctions. However, recent game-theoretical research has shown that such auctions can even lead to inefficient perfect Bayesian equilibria with risk-neutral bidders. There is a fundamental free-rider problem without a simple solution, raising the question whether ascending combinatorial auctions can be expected to be efficient in the field. Risk aversion is arguably a significant driver of bidding behavior in high-stakes auctions. We analyze the impact of risk aversion on equilibrium bidding strategies and efficiency in a threshold problem with one global and several local bidders. Due to the underlying free-rider problem, the impact of risk-aversion on equilibrium bidding strategies of local bidders is not obvious. We characterize the necessary and sufficient conditions for the perfect Bayesian equilibria of the ascending auction mechanism to have the local bidders to drop at the reserve price. Interestingly, in spite of the free-riding opportunities of local bidders, risk-aversion reduces the scope of the non-bidding equilibrium. The results help explain the high efficiency of ascending combinatorial auctions observed in the lab.     

Corporate Governance, Opaque Bank Activities, and Risk/Return Efficiency: Pre- and Post-Crisis Evidence from Turkey

Does better corporate governance unambiguously improve the risk/return efficiency of banks? Or does either a re-orientation of banks’ revenue mix towards more opaque products, an economic downturn, or tighter supervision create off-setting or reinforcing effects? The authors relate bank efficiency to shortfalls from a stochastic risk/return frontier. They analyze how internal governance mechanisms (CEO duality, board experience, political connections, and education profile) and external governance mechanisms (discipline exerted by shareholders, depositors, or skilled employees) determine efficiency in a sample of Turkish banks. The 2000 financial crisis was a wake-up call for bank efficiency and corporate governance. As a result, better corporate governance mechanisms have been able to improve risk/return efficiency when the economic, regulatory, and supervisory environments are more stable and bank products are more complex.     

Determinants of Fresh and Frozen Fruit and Vegetable Expenditures in Turkish Households: A Bivariate Tobit Model Approach

In this study, we have identified the effects of socio-demographic and economic factors of household heads and households on monthly expenditures of fresh and frozen fruit and vegetable in Turkey using the bivariate Tobit model. The results show that both the probability and monthly spending levels of household fruit and vegetable consumption increase with increasing in age of household heads, educational levels of household heads, married household heads, household income, and the number of adults in a family, while male-headed households, working household heads, the households that receive in-kind help from the government or private sector, and the use of internet at home decrease both the likelihood and spending levels of fruit and vegetable consumption in Turkey. The results in the study may contribute to the stakeholders to identify and implement effective marketing strategies and also develop more effective policies for the government to improve nutritional levels for certain dwellings for which the government include them in the certain state-initiated benefit program.     

Economic Reform and Corruption: Evidence from Panel Data

The notion that economic reform can reduce corruption remains prevalent in the policy agenda of international financial institutions, especially of the World Bank. Economic reforms have, therefore, been carried out throughout various parts of the world to improve the performance of the economies. Using data from 94 low‐ and middle‐income nations for the period 1996–2015, this study employs static and dynamic panel analysis to examine whether economic reform undertaken in accordance with the World Bank's reform programs negatively affects corruption. Our findings suggest that enhancing government effectiveness (i.e. independence of civil service from political pressure, provision of quality public services, effective policy formulation and the government's commitment to such policies) and improving public rights and civil liberties could be some of the most promising policies in terms of fighting corruption. The role of economic development and growth in real per capita income is also found to be significant in some of the specifications. However, the assertion that economic reform can reduce corruption is rejected in all the specifications. We rather find evidence that economic reforms negatively affect the ability of democracy to fight corruption, although on a slim margin. The central theme of the implications of our findings is that in combating corruption, social, institutional and legal means are far more important than economic means. The finding thus is compatible with the World Bank's effort in the later years to introduce governance and democracy as effective tool against corruption.