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581.
Richard Blundell Jean‐Marc Robin 《Econometrica : journal of the Econometric Society》2000,68(1):53-84
This paper develops a new concept of separability with overlapping groups—latent separability. This is shown to provide a useful empirical and theoretical framework for investigating the grouping of goods and prices. It is a generalization of weak separability in which goods are allowed to enter more than one group and where the composition of groups is identified by the choice of group specific exclusive goods. Latent separability is shown to be equivalent to weak separability in latent rather than purchased goods and provides a relationship between separability and household production theory. For the popular class of linear, almost ideal and translog demand models and their generalizations, we provide a method for choosing the number of homothetic separable groups. A detailed method for exploring the composition of the separable groups is also presented. These methods are applied to a long time series of British individual household data on the consumption of twenty two nondurable and service goods. 相似文献
582.
ABSTRACT: Using newly collected firm-level data, this paper analyzes the effect of mergers on the earnings and employment of pilots, flight attendants, and mechanics in the US airline industry between 1971 and 1990. The results show that mergers had a significant and largely negative impact on flight attendants’earnings but have a limited impact on mechanics’and none on pilots’earnings. Mergers have no significant direct impact on employment for pilots or mechanics but affected flight attendants’employment negatively. The indirect impact of reduced activity following mergers did lead to an overall negative impact on employment for pilots and significantly increased the magnitude of the effect for flight attendants. 相似文献
583.
Migration aspirations and the perceptions of the political,economic and social environment in Africa
While much research has investigated how objective pull factors in the destination countries affect migration movements, and how subjective push factors affect migration aspirations, we know little about the interrelationship between subjective and objective factors. This paper therefore examines how people's perceptions of their political, economic and social structural environment affect their migration aspirations and to what extent these perceptions are determined by the objective situation in a country. Accounting for individual perceptions is important because individuals may be affected by structural factors to different degrees, and their knowledge of the objective situation may vary. Perceptions may also be affected by individuals' norms and values as well as people's different expectations. This study is based on data from Round 7 of the Afrobarometer survey, fielded between 2016 and 2018 in 34 African countries. Our findings show that positive perceptions of the structural environment are related to lower migration aspirations and that this relationship is only partly dependent on the objective situation in a country. 相似文献
584.
The current study aimed to (i) examine associations across features of affective and cognitive empathy, and (ii) explore their independent role for children's peer relationships at the transition to school. Affective empathy was measured using both observations of children's facial affect during an empathy-eliciting event and dispositional affective empathy to peer distress via teacher report. Cognitive empathy was measured using an index of children's proclivity to engage in perspective taking when witnessing the distress of another. Children's theory of mind was also assessed given close links with cognitive empathy. Participants were 114 Australian children (Mage = 67 months, SD = 5 months) assessed across two sessions during their first year of formal schooling. Findings showed that features of children's affective and cognitive empathy were unrelated, but both showed independent associations with children's positive peer relationships (assessed via peer-reported social preference and teacher-rated peer social maturity). The current study provides support for the delineation between features of affective and cognitive empathy in early school-age children, and the importance of understanding both affective and cognitive empathy for children's peer relationships at the transition to school. These findings have implications how we understand both the nature of empathy in childhood and the role it plays in supporting children's positive peer relationships. 相似文献