The J-curve dynamics of Turkey: an application of ARDL model

This article seeks an empirical evidence for the existence of the J-curve phenomenon both in the short-run and long-run for Turkey over the period 1980-2005. The bounds testing cointegration approach is employed to estimate the trade balance model. An augmented form of Granger causality analysis is implemented between trade balance, real effective exchange rates, foreign income and domestic income. The stability of the short-run as well as long-run coefficients in the trade balance model is tested too. The empirical results that the J-curve phenomenon is supported only in the short-run. Whilst causality tests reveal mix results, the parameter stability tests seem to be inconclusive.     

Modeling life expectancy in Turkey

This study is concerned with understanding the factors of life expectancy in Turkey for the period 1965-2005. The determinants of life expectancy in Turkey are related to selected social, economical and environmental factors. Bounds testing approach to cointegration is employed to compute the long-run elasticities of longevity with respect to the selected economic, social and environmental factors. There exists no previous study that estimates empirically the determinants of life expectancy in Turkey on the basis of time series data and cointegration framework. Empirical results suggest that nutrition and food availability along with health expenditures are the main positive factors for improving longevity whereas smoking seems to be the main cause for mortality. The results also draw a number of policy recommendations for improving longevity.     

Do exchange rate changes have symmetric or asymmetric effects on the demand for money in Turkey?

As a result of the research conducted by Nobel Laureate Robert Mundell (1963), most studies estimating the demand for money today do include the exchange rate in their specification to account for currency substitution. Previous studies that did this for the Turkish demand for money assumed that exchange rate changes do have symmetric effects on the demand for money in Turkey. In this article, we question this assumption. By using the nonlinear ARDL approach, we show that indeed exchange rate changes do have short-run and long-run asymmetric effects on the M1 demand for money. Introducing nonlinearity also yields a stable money demand.     

Asymmetric effects of exchange rate changes on Turkish bilateral trade balances

Previous studies that have assessed the short-run and the long-run effects of exchange rate changes on Turkey’s trade balance with its major partners relied upon a linear adjustment process that could not find much support for favorable effects of exchange rate changes. In this paper, once we separate real appreciations from real depreciations via the partial sum concept and introduce nonlinearity into the estimation and testing procedure, we show that the effects of exchange rate changes are asymmetric. More precisely, while lira appreciation does not have any significant effects on Turkey’s bilateral trade balances, lira depreciation has significantly favorable effects on Turkey’s trade balance with its European partners (France, Germany, Italy, Portugal, and Great Britain).     

Testing the hypothesis of the natural suicide rates: Further evidence from OECD data

This paper provides further evidence on the hypothesis of the natural rate of suicide using the time series data for 15 OECD countries over the period 1970–2004. This hypothesis suggests that the suicide rate of a society could never be zero even if both the economic and the social conditions were made ideal from the point of view of suicide (Yang and Lester, 1991). This research relates the suicide rates to harmonized unemployment and divorce rates to test the natural hypothesis statistically. We also address methodological flaws by earlier suicide studies by employing autoregressive-distributed lag (ARDL) approach to cointegration advocated by Pesaran et al. (2001). In majority of regression equations, the constant term was positive and statistically significant, indicating a non-zero natural suicide rate. In particular, we find evidence that at aggregate level, Turkey has the lowest (3.64) and Japan has the highest (13.98) natural rate of suicides. In terms of the male natural suicide rates, the United Kingdom ranks the lowest (4.73) and Belgium ranks the top (15.44). As for the female natural suicide rates, Japan takes the lead (16.76) and Italy has the lowest (5.60). The results are also compared and contrasted to each other with a view to drawing plausible policy conclusions.     

The bilateral J-curve: Turkey versus her 13 trading partners

This study empirically analyses bilateral J-curve dynamics of Turkey with her 13 trading partners using quarterly time series data over the period 1985–2005. Short- and long-run impacts of the depreciation of Turkish lira on the trade balance between Turkey and her 13 trading partners are estimated from the bounds cointegration testing approach and error correction modelling. The empirical results indicate that whilst there is no J-curve effect in the short-run, but in the long-run, the real depreciation of the Turkish lira has positive impact on Turkey's trade balance in couple of countries. The stability of the long-run trade balance equations is also checked through CUSUM and CUSUMSQ stability tests.     

Modeling crime in Japan

This study aims at identifying the factors of aggregate and disaggregate crime categories in Japan over the period 1964–2009. All crime categories are related to police outlays, police numbers, unemployment, divorce and urbanization rates. Bounds testing approach to cointegration is implemented to test the existence of a long-run relationship amongst the variables. Cointegration analysis yields that the main deterrent effect on crime is the police presence and this factor is further confirmed by the real police outlays. As for the essential cause of crime, urbanization stands as the leading factor which is followed by divorce and unemployment rates. Policy implications are discussed.     

A social discount rate for Turkey

Social discount rate (SDR) is a very crucial policy parameter in public project appraisals due to its resource allocation impacts. If this rate is too high, future generations will face excess financial burden since distant cash flows will become negligible. If this rate is too low, ineffective projects are chosen creating an inefficient allocation of resources. This study estimates an SDR for Turkey using the social time preference rate (STPR) approach. The elasticity of the marginal utility consumption, which is the most important component of the STPR, is estimated econometrically from a demand for food approach during the period of 1980–2008. The overall result indicates that the SDR for Turkey is 5.06%. The European Union requires evaluation of the publicly supported commercial projects in terms of the SDR; hence the findings from this study can be used as a useful policy measurement for a full EU member candidate country, Turkey.