Learning effects in coders and their implications for managing content analyses

From the perspective of study management, research is surprisingly lacking on two of the major challenges for planning and performing content analysis: determining the sample size (i.e. number of objects to code) and the required number of coders to hire. The optimization of both of these numbers will ultimately determine how efficiently available resources are used. This study contributes to the methodological discussion on coding by identifying and conceptualizing the role of learning effects with respect to the coding task and by highlighting the importance of considering the coding process when managing a content analysis. We present empirical evidence for the existence and impact of learning effects on coders’ coding speed. Accordingly, study management should take account of learning effects when determining the sample size and number of coders. We also provide an illustrative example of how learning effects can impact the results of pretests.     

Ethnocentrism versus group-specific stereotyping in immigration opinion: cross-national evidence on the distinctiveness of immigrant groups

While widespread resistance to immigration is well established in advanced democracies around the world, the role of group-specific stereotyping in anti-immigration sentiment has received limited attention. We derive a novel measurement model to assess stereotyping in three Anglo-Saxon democracies – the US, Canada, and the UK – of the modal outgroup in each country (Hispanics in the US and South Asians in Canada and the UK) and Middle Easterners/Muslims. We show that considerable variation exists in degree of stereotyping against the two major immigrant groups. In the US case, we additionally document over-time variation in group stereotyping. In a final step, we demonstrate a relationship between group antipathies and immigration policy views, akin to other policy domains in which public support varies by the ethnic characteristics of policy beneficiaries. To our knowledge, this study is the first to map stereotypes of Muslims in the US in a comparative setting and over time after 09/11, and amongst the first to link views on immigration policies to group-based stereotypes.     

Boundedly rational banks’ contribution to the credit cycle

We investigate how banks’ boundedly rational learning influences their views about default risks over the business cycle. Our analysis details the direction and the magnitude of these effects assuming that banks update probability in a Bayesian way. With a limited experience span lenders are liable to overestimate (underestimate) losses from defaulting loans early (late) in the boom. Depending on their experience span, banks turn over-optimistic and underprice default risk 3–5 years into the boom. During recessions an overpricing of risk begins just quarters into the recession. Our simulations are calibrated with U.S. data and provide evidence for the view that banks contribute to excessive lending during the upswing and to credit crunches in recessions.     

Coaching bei Konflikten in der ?ffentlichen Verwaltung

This paper discusses conflicts in teams working in the public administration. It starts with a definition of conflicts and the discussion of special terms and conditions, which determine conflicts within the public administration. As such conditions, the shortage of resources, the high degree of specialisation of the employees and the low degree of fluctuation are examined. Finally, a case study is described.     

Determinants of obesity: The case of Germany

Obesity now has the rank of a global epidemic, but finds its severest expression in the economically advanced parts of the world. This study offers an interdisciplinary analysis of obesity in Germany, including socio-economic factors. In comparison to related studies, it uses a continuous BMI variable as well as an improved empirical design. The coefficient of the term for sport activities is significantly negative, and the coefficient for the age terms are significantly positive. The results for the income variable are ambiguous. Cigarette consumption does not indicate negative relationships with individual BMI-levels. No evidence was found for systematic differences in BMI between the eastern and western regions in reunified Germany.     

Generalization and efficient computation of the box-meyer analysis for orthogonal designs

Box and Meyer (1986) [1] proposed a Bayesian analysis for saturated orthogonal dedigns, based on the widely-used method of examining normal plots of effects estimates. Stephenson, Hulting, and Moore (1989) [5] give an algorithm for computing this analysis, but it can be quite slow for even 2⁵ designs. In this paper we extend the technique to cover all orthogonal factorial designs, rather than just saturated ones, and we show how the computational algorithm can be greatly improved, both in terms of accuracy and speed. With these extensions and improvements the Box-Meyer method becomes viable as a technique for interactive analysis of any orthogonal factorial design, not just small, saturated ones.     

Söhne bevorzugt? Geschlechtsspezifische Unterschiede beim Gymnasialbesuch türkischstämmiger Schülerinnen und Schülern

It is often assumed that in Germany the situation in Turkish families can be characterized by traditionalism, a patrilineal organization of family relationships and a rigid gender role orientation including a traditional gender division between gainful employment and housework. Against this background one would expect Turkish parents to have a particular strong interest in a high educational attainment of their sons and consequently they should invest more in their education. This article examines whether there is evidence for such preferences and relevant behaviours. An analysis of official school statistics of the federal state North-Rhine Westphalia shows that Turkish boys are more likely to make a transition to a Gymnasium than Turkish girls. However, a systematic preference of Turkish parents of a transition to secondary education for their sons cannot be confirmed by way of micro data. Moreover results from our macro data indicate that already in grade seven the gender ratio is reversed. All in all our analyses indicate that there is no significant and sustainable disadvantage for Turkish girls in comparison to Turkish boys.