This paper illustrates the effects of item-nonresponse in surveys on the results of multivariate statistical analysis when estimation of productivity is the task. To multiply impute the missing data a data augmentation algorithm based on a normal/Wishart model is applied. Data of the German IAB...

The convex time budget (CTB) method is a widely used experimental method for eliciting an individual's time preference. Researchers adopting the CTB experiment usually assume quasi-hyperbolic discounting utility as a behavioural model and estimate the parameters of the utility function. However,...

Der weit verbreitete Eindruck der Uneinheitlichkeit von statistischen Informationen zur (beruflichen) Weiterbildung dürfte zu einem Teil auf Unterschiede in Erhebungskonstrukten zurückzuführen sein. Denn was unter (beruflicher) Weiterbildung verstanden wird und wie Weiterbildungsaktivitäten...

In Zeiten von einer Vielzahl spektakulärer Bilanzskandale im In- und Ausland greift die Finanzverwaltung zunehmend im Rahmen der digitalen Betriebsprüfung auf mathematisch-statistische Methoden zurück, welche helfen sollen, dolose Handlungen leichter und effizienter erkennen zu können....

Wikipedia, Facebook und Flickr sind nur einige Beispiele erfolgreicher öffentlicher Social Software-Anwendungen. Es stellt sich zunehmend die Frage, welchen Stellenwert die Nutzung von Social Software für Unternehmen hat. Der vorliegende Forschungsbericht stellt die Ergebnisse einer Studie zum...

Respondent-driven sampling is a network sampling technique typically employed for hard-to-reach populations (for example, drug users, men who have sex with men, people with HIV). Similarly to snowball sampling, initial seed respondents recruit additional respondents from their network of...

In trying to capture complete within-household heterogeneity, household panel surveys typically try to interview all adult household members. Following from this, such surveys tend to suffer from partial unit nonresponse (PUNR), that is, the nonresponse of at least one member of an otherwise...

Although left-right items are a standard tool of public opinion research, there is little agreement about the optimal response format. Two disputes can be identified in the literature: (1) whether to provide respondents with a small or large number of answer categories, and (2) whether or not to...

When valuing risky prospects, people tend to overweight small probabilities and to underweight large probabilities. Nonlinear probability weighting has proven to be a robust empirical phenomenon and has been integrated in decision models, such as cumulative prospect theory. Based on a laboratory...