Opportunities of the minimum Anderson–Darling estimator as a variant of the maximum likelihood method

We reveal that the minimum Anderson–Darling (MAD) estimator is a variant of the maximum likelihood method. Furthermore, it is shown that the MAD estimator offers excellent opportunities for parameter estimation if there is no explicit formulation for the distribution model. The computation time for the MAD estimator with approximated cumulative distribution function is much shorter than that of the classical maximum likelihood method with approximated probability density function. Additionally, we research the performance of the MAD estimator for the generalized Pareto distribution and demonstrate a further advantage of the MAD estimator with an issue of seismic hazard analysis.     

Criticism of the predictive distribution

The predictive distribution is a mixture of the original distribution model and is used for predicting a future observation. Therein, the mixing distribution is the posterior distribution of the distribution parameters in the Bayesian inference. The mixture can also be computed for the frequentist inference because the Bayesian posterior distribution has the same meaning as a frequentist confidence interval. I present arguments against the concept of predictive distribution. Examples illustrate these. The most important argument is that the predictive distribution can depend on the parameterization. An improvement of the theory of the predictive distribution is recommended.     

Estimation of causal effects in observational studies with interference between units

Causal effects are usually estimated under the assumption of no interference between individuals. This assumption means that the potential outcomes for one individual are unaffected by the treatments received by other individuals. In many situations, this is not reasonable to assume. Moreover, not taking interference into account could result in misleading conclusions about the effect of a treatment. For two-stage observational studies, where treatment assigment is randomized in the first stage but not in the second stage, we propose IPW estimators of direct and indirect causal effects as defined by Hudgens and Halloran (J Am Stat Assoc 103(482):832–842, 2008) for two-stage randomized studies. We illustrate the use of these estimators in an evaluation study of an implementation of Triple P (a parenting support program) within preschools in Uppsala, Sweden.     

Immigration and status exchange in Australia and the United States

This paper evaluates the status exchange hypothesis for Australia and the United States, two Anglophone nations with long immigration traditions whose admission regimes place different emphases on skills. Using log-linear methods, we demonstrate that foreign-born spouses trade educational credentials via marriage with natives in both Australian and U.S. marriage markets and, moreover, that nativity is a more salient marriage barrier for men than for women. With some exceptions, immigrant spouses in mixed nativity couples are better educated than native spouses in same nativity couples, but status exchange is more prevalent among the less-educated spouses in both countries. Support for the status exchange hypothesis is somewhat weaker in Australia partly because of lower average levels of education compared with the United States and partly because of the less sharply defined educational hierarchy at the postsecondary level.     

Fertility Decline During Albania’s Societal Crisis and its Subsequent Consolidation

Cross-sectional comparisons of the decline in fertility in former socialist countries point to a bi-phasic response: a crisis-induced family limitation followed by the postponement of childbearing during economic and political consolidation. In this article, the last two decades of Albania’s fertility transition are documented. The bi-phasic response model is tested in a period analysis of adaptations in marriage and parity-specific fertility to the socio-economic and political transformations since the fall of communist rule. We find that the timing and patterns of changes in Albanian family behaviours generally adhere to the model. Socio-economic differentials and trends are congruent with the major role played by the crisis and structural change. However, the Albanian case also highlights the enduring importance of traditional family formation models during the crisis, as well as among specific subpopulations more recently. These results are discussed with reference to a sociological account of Albanian society.     

Einf��hrung von Kommunikationsstandards in Unternehmensnetzwerken �C ein gestaltungsorientierter Ansatz bei dezentraler Entscheidungsstruktur

Standards and technologies (e.g. in the area of web services) that are currently discussed in research and practice will strongly change IT-based communication between organizations. However, the decision to standardize is accompanied by the risk of introducing a standard that is not adopted by other organizations afterwards. Hence, the interdependencies among the standardization decisions due to positive network effects result in a coordination problem, which is referred to as ??the standardization problem??. If the standardization decisions are taken by autonomous actors (e.g. legally independent organizations) that do not know the standardization decisions of the other actors in the network, this standardization problem arises for a decentralized decision structure and incomplete information. Thus, actors have to decide under uncertainty on whether to standardize or not. To avoid resulting inefficiencies and wrong decisions, we propose a formal, normative approach. This approach allows an actor within the network to anticipate the standardization decisions of the other actors and the associated network effects. Central to our approach are the consideration of interdependencies among the standardization decisions and the solution of the resulting system of equations.     

FROM FLEXIBILITY TO INSECURITY: HOW VERTICAL SEPARATION AMPLIFIES FIRM‐LEVEL UNCERTAINTY

This article presents a model where firms may endogenously externalize part of their production process. We start from the premise that adaptation to uncertainty cannot be contracted upon in the worker/employer relationship. Vertical separation then balances flexibility gains against hold‐up costs of opportunistic behavior by outside contractors. In equilibrium, the degree of separation is shown to depend on the degree of product market competition, contractor's bargaining power, and the volatility of demand shocks. Our main result is that an increase in the degree of vertical separation amplifies the elasticity to demand shocks of firms' sales and employment. It does not, however, amplify aggregate uncertainty. Evidence from firm‐level data is shown to be largely consistent with the main implications of our theory. (JEL: L16, L23, L24)     

How to ask sensitive multiple-choice questions

Motivated by recent failures of polling to estimate populist party support, we propose and analyze two methods for asking sensitive multiple-choice questions where the respondent retains some privacy and therefore might answer more truthfully. The first method consists of asking for the true choice along with a choice picked at random. The other method presents a list of choices and asks whether the preferred one is on the list or not. Different respondents are shown different lists. The methods are easy to explain, which makes it likely that the respondent understands how her privacy is protected and may thus entice her to participate in the survey and answer truthfully. The methods are also easy to implement and scale up.