Savings,remittances, and return migration

"We use a data set of immigrants to West Germany to simultaneously study both savings and remittances which we relate to individual characteristics, economic variables, migration experiences and remigration plans. Section 2 discusses the basic hypotheses and explains the data. Section 3 presents the empirical study and Section 4 summarizes." The results suggest that "savings and remittances of migrants can be well explained by remigration plans and economic as well as demographic variables. However, the planned future duration of residence in Germany has a negative and significant effect only on remittances."     

Consumer online privacy concerns and responses: a power–responsibility equilibrium perspective

We use the Power–Responsibility Equilibrium (PRE) framework and advance that consumers balance perceived deficits in privacy protection by power holders (businesses and regulators) with defensive actions. In our model, consumer privacy concern is the endogenous mediating entity linking business policy and regulatory perceptions to negative online user responses. The model was empirically tested and confirmed in an experimental setting. In a second study, we added the nature of consumer information involved into a sub-model. Here, we investigated the moderating role of information sensitivity and congruency on the business policy–concern relationship across three industry contexts. Both hypothesized two-way interactions were confirmed, suggesting that a strong business policy is effective in reducing concern when low sensitivity data are gathered, but insufficient in reducing concern for highly sensitive data. Furthermore, concern increased dramatically when sensitive data were collected that were incongruent with the business context.     

The labor market effects of trade unions in an open economy: Layard meets Melitz

Trade unions are typically able to convert their industrial power into political power. We show that, depending on the constellation of parameters, stronger trade unions may improve welfare in terms of an increase in aggregate employment and output if they successfully lobby for lower trade barriers set by the government.     

Analysis of embedded options in individual pension schemes in Germany

Newly introduced government-subsidized pension products in Germany are required to contain a promise by the seller to provide a “money-back guarantee” at the end of the term. The client is also given the right to stop paying premiums at any time (paid-up option). In this case, the amount of all premiums paid must also be guaranteed by the seller at maturity, no matter when the client stopped paying the premiums. Previous analyses of guarantees in such government-subsidized pension products have ignored this additional option. Within a generalized Black/Scholes framework, we analyze the value of the paid-up option for different products, market scenarios, and client behavior. Our results indicate that the paid-up option significantly increases the value of the money-back guarantee. Furthermore, we find that reducing volatility by shifting the client’s assets from stocks to bonds as maturity approaches is a suitable means of reducing the risk arising from the “pure” money-back guarantee but much less effective in reducing the risk arising from the paid-up option. JEL Classification G13 · G23 · G28     

A brief instrument to measure health-related quality-of-life in patients with bone metastasis: validation of the German version of Bone Metastases Quality-of-Life-10 (BOMET-QoL-10)

Aims: This prospective, epidemiologic study was designed to translate the original Spanish Bone Metastases Quality-of-Life-10 (BOMET-QoL-10) questionnaire and undertake a validation of the translated German version of BOMET-QoL-10 in Germany to assess health-related quality-of-life (HRQoL) in patients with bone metastases (BM).

Methods: The translation process included forward and backward translations, and a linguistic validation. Patients aged ≥18 years with histological confirmation of cancer, diagnosed with BM, life expectancy ≥6 months, and fluency in German were eligible for this study (enrolled consecutively in 33 outpatient centers in Germany). Patients were given the German version of BOMET-QoL-10, together with the European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire QLQ-C30 and EORTC QLQ-BM22 questionnaires at inclusion, 6 weeks, 3 months, and 6 months after inclusion. A debriefing questionnaire was administered at inclusion to determine patient acceptability and understanding.

Results: Data include 364 patients with BM (median age?=?68 years; females?=?71.7%). The BOMET-QoL-10 is brief and clear (median completion time?=?5?minutes; >90% of patients completed the questionnaire without assistance). The BOMET-QoL-10 forms only one overall scale. All 10 items showed a substantial correlation with the first factor (factor loading, range?=?0.58–0.86). BOMET-QoL-10 exhibits high internal consistency and reproducibility (Cronbach’s alpha?=?0.91; intra-class correlation coefficient?=?0.76). BOMET-QoL-10 showed significant correlations (range?=?0.69–0.79) both with EORTC QLQ-C30 and EORTC QLQ-BM22 within the functioning (physical, social, interference) and symptom (fatigue, pain) scales, displayed significant sensitivity to change in EORTC QLQ-BM22 scores, and proved the potential ability to detect change in HRQoL in patients with different disease status.

Limitations: There was a high proportion of females in this study, which might represent a limitation.

Conclusions: The German version of BOMET-QoL-10 is a valid, reliable, brief, and clear instrument able to measure HRQoL in patients with BM.     

The Comparative Statics of Effective Demand

Keynes introduces the term ‘effective demand’ in Chapter 3 of the General Theory as designating the point of intersection of two functions: the ‘aggregate demand function’ (D) and the ‘aggregate supply function’ (Z). For the first time in the literature, I here use specific functional forms for the D and Z functions and run numerical simulations which allow study of the comparative statics of the model in the face of various ‘shocks’. The demonstration of how the D/Z model actually works will hopefully prove useful for future students of the economics of Keynes.     

Bringing Social Structure Back into Economics: On Critical Realism and Hayek's Scientism Essay

This paper offers a critique of the critical realist (CR) interpretation of Friedrich Hayek's famous essay Scientism and the Study of Society presented in Tony Lawson's recent Economics and Reality. It is argued, contrary to Lawson's reading, that Hayek's social structures (1) do have an existence over and above the conceptions of the individual actors and (2) serve as a precondition for human action on the lines proposed by CR. Some links are made between Hayek's essay and the theory of social reality recently proposed by John Searle, and some comparisons drawn with CR.