Grocery Store Attributes in Recovering Economies: An Empirical Investigation of Their Importance,Using Three-Component Contour Plotting

The authors share results of a study conducted to measure the attributes of grocery stores that are the most important for consumers in a market recovering from war and transitioning to a market economy. Applying a trilinear coordinate plot, the authors develop a model that consists of those attributes. The findings led to conclusions that services and location, rather than the historically favored attribute of price, increasingly are key factors affecting store choice. Managerial implications are discussed and future research directions are suggested.     

Sickness Absence and Works Councils: Evidence from German Individual and Linked Employer–Employee Data

Using both household and linked employer–employee data for Germany, we assess the effects of nonunion representation in the form of works councils on (1) individual sickness absence rates and (2) a subjective measure of personnel problems due to sickness absence as perceived by a firm's management. We find that the existence of a works council is positively correlated with the incidence and the annual duration of absence. Further, personnel problems due to absence are more likely to occur in plants with a works council.     

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Gravity model estimation: fixed effects vs. random intercept Poisson pseudo-maximum likelihood

The standard Anderson and van Wincoop gravity model has typically been estimated using a fixed-effects approach. However, a fixed-effects approach has a major drawback: it does not allow for the estimation of exporter- and importer-invariant variables. Thus, at least in a cross-sectional context, economically relevant variables such as exporter and importer gross domestic product are disregarded. We propose a random intercept model to address this gap. For large datasets, this approach not only provides identical estimates like a fixed-effects approach, but also allows for the estimation of exporter- and importer-invariant variables.