A comparison of approximately optimal stratification given proportional allocation with other methods of stratification and allocation

Summary In this article, we shall present an approximately optimal method for constructing stratum boundary points when the sample is allocated proportionally. The method is based on an equal partitioning of the cumulative off ^1/3, wheref is the distribution of the stratification variable. We show that in many practical situations this technique compares favourably with approximately optimal stratification and allocation methods previously suggested.

---

Zusammenfassung In diesem Artikel stellen wir eine annähernd optimale Methode zur Festlegung von Stratabegrenzungspunkten dar, die für proportional angeordnete Samples gilt. Die Methode basiert auf einer gleichen Einteilung derf ^1/3-Kummulation, wobeif die Verteilung der Stratifikations-variablen darstellt. Wir zeigen, daß diese Technik in vielen praktischen Fällen gegenüber den bisher vorgeschlagenen Methoden zur optimalen Stratifikation und Zuordnung nicht schlecht abschneidet.

     

WIC Participation and Relative Quality of Household Food Purchases: Evidence from FoodAPS

We examine the effect of the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) on the quality of household food purchases using the National Household Food Acquisition and Purchase Survey (FoodAPS) and propensity score matching. A healthy purchasing index (HPI) is used to measure nutritional quality of household food purchases. WIC foods explain the improvement in quality of food purchases, not self‐selection of more nutrition‐conscious households into the program. The improvement in purchase quality was driven entirely by WIC participating households who redeemed WIC foods during the interview week. There was no significant difference between WIC participants who did not redeem WIC foods and eligible nonparticipants. In this sample, there is no evidence that lack of access to clinics has adverse effects on participation nor is there evidence that HPI depends on supermarket access. A supervised machine learning process supports our main conclusion on the importance of WIC foods.     

How do the employment effects of job creation schemes differ with respect to the foregoing unemployment duration?

Based on new administrative data for Germany covering entrances into job creation schemes between July 2000 and May 2001, we evaluate the effects of this active labour market policy programme considering the timing of treatment in the individual unemployment spell. Applying propensity score matching in a dynamic setting where the time until treatment in the unemployment spell is stratified into quarters, regional (East and West Germany) as well as gender differences are considered in the estimation. The results in terms of employment present a heterogeneous, but disappointing picture. For West Germany, most of the estimates are insignificant at the end of the observation period, and only one positive exception could be established. In East Germany, none of the groups experiences an improvement of the labour market situation, but the employment chances tend to be reduced due to participation even 30 months after start of programmes.     

Investigating CSR communication in SMEs: a case study among Danish middle managers

This paper seeks to analyse small‐ and medium‐sized enterprise (SME) managers' representations of corporate social responsibility (CSR) and CSR communication in a corporate communication perspective. The basic question is: how strategic is CSR communication in SMEs? Corporate communication and CSR theories are used to establish an ideal typology of CSR concepts informing an analysis of qualitative data in the form of interviews with three middle managers in two Danish SMEs. A CSR communication model published earlier by the authors is challenged from a SME perspective. Results from an Internet‐based questionnaire survey of 1071 SMEs pave the way for the analysis. Our analysis shows that SME managers clearly have an inside‐out approach to CSR, with a strong emphasis on the internal (corporate culture) dimension. However, SMEs and/or SME managers tend not to communicate externally about the CSR activities of the company. Based on these findings, the paper argues that CSR communication in SMEs is challenged by the global economy and is under revision. The contribution of the paper is to provide an insight into SMEs' present stage in relation to a possible future approach to strategic CSR communication. The paper also reminds us that SMEs have no interest in turning their local and authentic practice into a forced marketing and branding exercise, leaving them with an artificial picture of who they are and strive to be in the future. They should keep on acting locally but force themselves to think globally.     

The long and winding roads: Perceived quality of scenic tourism routes

This study aims to understand self-drive tourists’ satisfaction with and loyalty toward scenic roads. Building on previous studies in the context of tourism destinations, satisfaction is hypothesised to be influenced by leisure and holiday motorists’ motivation for driving the routes and the provision of roadside facilities. In turn, satisfaction is assumed to increase motorists’ loyalty toward the route. The study comprises data from two scenic roads in Norway that differ with respect to landscapes formations, settlements, experiences along the routes, and travel distance. Data are analysed using structural equation modelling. Results show that roadside facilities play a crucial role in achieving overall satisfaction and loyalty among motor tourists, and that route managers should improve the quality of these and related infrastructure facilities and services. Moreover, the study indicates that it is important to take into consideration the motorists’ desire to experience attractive sceneries in order to increase overall route satisfaction. Finally, satisfaction is demonstrated to significantly increase route loyalty, although this relationship appears weaker than in conventional destination studies.     

Market Incentives for Safe Foods: An Examination of Shareholder Losses from Meat and Poultry Recalls

Meat and poultry recalls, while voluntary, are carried out under governmental oversight. If firms have financial incentives to avoid being implicated in a recall situation, governmental involvement in recalls may cause firms to internalize social costs when making investment decisions concerning food safety controls. To examine these incentives, we analyze federally supervised meat and poultry recalls from 1982 to 1998 within an event study. Results show significant shareholder losses when publicly traded food companies are implicated in a recall involving serious food safety hazards. We find no evidence that the stock market reacts negatively when recalls involve less severe hazards.     

Uncertainty and Growth of the Firm

Using data from a survey of 1,097 small and medium-sized non-listed Dutch firms we investigate the relation between growth of the firm and uncertainty. We focus on the impact of sales uncertainty on various types of investment. We find that sales uncertainty, measured by the conditional variance, has a mixed impact on various investment decisions. We include an analysis of the relevance of financial structure and firm size on the growth-uncertainty relation.     

Heterogeneous returns to personality: the role of occupational choice

We analyze the role of personality in occupational choice and wages using data from Germany for the years 1992 to 2009. Characterizing personality by use of seven complementary measures (Big Five personality traits, locus of control, and a measure of reciprocity), the empirical findings show that personal characteristics are important determinants of occupational choice. Associated with that, identical personality traits are differently rewarded across occupations. Hence, breaking down the analysis on the level of occupational groups provides more detailed results of returns to personality. By evaluating different personality profiles, we additionally estimate the influence of personality as a whole. The estimates establish occupation-specific patterns of significant returns to particular personality profiles. These findings underline the importance to consider the occupational distribution when analyzing returns to personality due to its heterogeneous valuation.     

Managing micropolitical risk: A cross‐sector examination

This article stresses the need for today's multinational firms to adopt their own political risk‐assessment and risk‐mitigation strategies. A comparative study of the energy, financial, and automobile sectors illustrates the need for all companies in these sectors to undertake comprehensive risk‐assessment strategies. Risk‐assessment models established by leading multinationals like British Petroleum, Bank of America, and General Motors are examined as examples that other companies in these sectors can build upon. The consistent micropolitical risk variables then lead to a proposed practical framework for examining sector‐specific micropolitical risk. © 2006 Wiley Periodicals, Inc.