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61.
The migration efficiency ratio of an area is defined as the net migration of the area (in-migrants minus out-migrants) divided by the total number of moves whose origin or destination is that area (in-migrants plus out-migrants) multiplied by 100. This paper investigates variations in migration efficiency from 1955 to 1960 among Standard Metropolitan Statistical Areas with populations of 250,000 or more. Regional variation in migration efficiency was evident, ranging from an average of ?9.7 in the Northeast to 19.6 for SMSA’s in the Western region. Nonwhites tended to have higher migration efficiency than whites. Rapidly growing metropolitan areas had higher migration efficiency ratios than areas growing at a lower rate or losing population. The educational level of a metropolitan area, as measured by the percent of the population 25 years old or over with at least a high school education, was positively related to migration efficiency. The composition of the migrant population, both in- and outmigrants for a given area, was related to the value of the migration efficiency ratio. If the migrant population contained a large proportion of persons aged 20–34, migration efficiency was low, regardless of the direction of the major migration stream. Region was found to have a major effect. Variables that had a strong and positive relationship with migration efficiency in one region were usually found to have no relation, or a negative relation, with it in other areas. Obviously, further research is needed for the identification of factors producing these strong regional effects.  相似文献   
62.
We explore the mechanisms through which subnational informal institutions exacerbate or ameliorate voids in national formal institutions. Informed by a within-country, cross-sub-region case comparison, we find two exacerbating mechanisms: Competition between the logics embedded in national and subnational institutions and the sabotage of a formal national institution by a void in a subnational informal institution. We also find two ameliorating mechanisms: Strong subnational informal institutions substitute for weak national institutions and bridge voids in formal institutions. Finally, we identify the conditions of expectation alignment and engagement associated with the competition, sabotage, substitution, and bridging mechanisms. Our findings contribute to institutional theory by providing a more subtle and contingent understanding of the interaction between informal and formal, and subnational and national, institutions. Our results also suggest ways in which constrained managers and bureaucrats can reduce the effects of voids in national formal institutions.  相似文献   
63.
We introduce and analyze expected uncertain utility (EUU) theory. A prior and an interval utility characterize an EUU decision maker. The decision maker transforms each uncertain prospect into an interval‐valued prospect that assigns an interval of prizes to each state. She then ranks prospects according to their expected interval utilities. We define uncertainty aversion for EUU, use the EUU model to address the Ellsberg Paradox and other ambiguity evidence, and relate EUU theory to existing models.  相似文献   
64.
A model indicating that the relationship between collective self-esteem and indicators of subjective well-being, happiness and life satisfaction, was mediated by personal self-esteem was tested by structural equation modeling. The model, including all participants, fitted well to the data. The results suggested that the relationship of collective self-esteem to happiness was fully mediated by personal self-esteem, whereas a partial mediation was the case for life satisfaction. When tested in four groups of attachment styles, however, the results indicated a full mediation for fearful, preoccupied and dismissing groups, but a partial mediation for the secure group. The results are discussed in the “pursuing self-esteem” framework.  相似文献   
65.
This paper examines the impact of racial inequality on black and white migration rates for a sample of metropolitan areas in the United States 1975–1980. A conceptual framework for migration that includes a measure of racial inequality is developed and evaluated. The results indicate that blacks are attracted to areas with lower levels of inequality, but contrary to our expectations, the rate of black out-migration is lower in Standard Metropolitan Statistical Areas with higher levels of racial inequality. In addition, whites seem to be attracted to labor markets where whites have the greatest advantage as measured by occupational inequality, and they are more likely to leave areas where the competition with blacks for jobs is greater. Implications for theory and further research for the comparative study of black and white migration are outlined.  相似文献   
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67.
We study a two‐period model where ex ante inferior choice may tempt the decision‐maker in the second period. Individuals have preferences over sets of alternatives that represent second period choices. Our axioms yield a representation that identifies the individual's commitment ranking, temptation ranking, and cost of self‐control. An agent has a preference for commitment if she strictly prefers a subset of alternatives to the set itself. An agent has self‐control if she resists temptation and chooses an option with higher ex ante utility. We introduce comparative measures of preference for commitment and self‐control and relate them to our representations.  相似文献   
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