Turkey's physicians' attitudes toward euthanasia: a brief research report

Euthanasia and assisted suicide are subject to an ongoing debate and discussed with various aspects. Because physicians are in a profession closely related to euthanasia, their attitudes toward this subject are significant. Thus, research intending to explore their opinions is carried out in many countries. In this study, opinions of the physicians regarding euthanasia's definition, contents, legal aspects, and acceptable conditions for its application are addressed. The questionnaire was given to 949 physicians, more than 1% of the total working in Turkey. Of the physicians who participated in the study, 49.9% agreed with the opinion that euthanasia should be legal in certain circumstances. In addition, 19% had come across a euthanasia request and the majority of physicians (55.9%) believed that euthanasia is applied secretly in the country despite the prohibitory legislation. In conclusion, the authors infer from the study itself and believe that euthanasia should be legal in certain circumstances and that the subject, which is not in the agenda of the Turkish population, should continue to be examined.     

Diagnostics of multiple group influential observations for logistic regression models

In this paper, two new multiple influential observation detection methods, GCD.GSPR and mCD*, are introduced for logistic regression. The proposed diagnostic measures are compared with the generalized difference in fits (GDFFITS) and the generalized squared difference in beta (GSDFBETA), which are multiple influential diagnostics. The simulation study is conducted with one, two and five independent variable logistic regression models. The performance of the diagnostic measures is examined for a single contaminated independent variable for each model and in the case where all the independent variables are contaminated with certain contamination rates and intensity. In addition, the performance of the diagnostic measures is compared in terms of the correct identification rate and swamping rate via a frequently referred to data set in the literature.     

Institutionelle Determinanten von F&E-Investitionen

Utilizing country level data we demonstrate that a strong degree of investor protection can mitigate both asymmetric-information and agency problems that come along with R&D financing. Accordingly, we find that a higher degree of investor protection is associated with higher R&D investments. Moreover, for a sample of Austrian listed firms, we are able to show that ownership identities are significant drivers of R&D investments.     

Changing perceptions? Effects of multiple social categorisation on German population’s perception of Muslims

Multiple social categorisation is one option for influencing people’s perception such that negative social opinions based on ethnicity, race, or religion decrease or disappear entirely. This study aims to examine German population’s perception of Muslims when multiple categorisation is applied. Based on data of 7341 respondents stemming from a factorial survey experiment used in a national, random-digit-dial telephone survey, we tested the effect of multiple social categorisation using the hypothetical situation of a Muslim marrying into the own family. Multiple categorisation works only when the Muslim in question is a woman. But perception differences between the Muslim woman and the Christian woman do not totally disappear. When the Muslim person in the same scenario is a man, multiple social categorisation has no effect on the perception of respondents. We discuss the implications of these results with regard to the Muslim as category of analysis.     

Founding family effects on business group growth: Longitudinal evidence from Turkey (1925–2012)

Drawing from the family business perspective, this study provides insights into how the heterogeneity arising from founding family structures explains why particular business groups grow extensively, while others faced with similar external market conditions do not, and how the effects of founding family structure change over time. We test our hypotheses by using a unique, hand-collected, and extensive panel dataset which contains information of the full demographic history of founding families and all public and private companies founded/acquired or divested over the 1925–2012 period for 51 business groups in Turkey. Consistent with our hypotheses, our findings show that family size is a major positive determinant of the number of affiliated firms and the group scope. This effect is more strongly driven by sons compared to daughters. Business groups also grow more extensively when the first-born child is male. These family effects are stronger in the early developmental period of the business groups.