Closed competitive bidding

This paper replaces the competitive bidding models of Friedman and Gates with a more general probabalistic bidding model which resolves the conflict between them. The validity of the model is demonstrated by simulation. Practical difficulties of using the probabalistic approach are discussed and several lines of future research suggested.     

Assessing the Differences in Distance of Interstate Migration, 1980

Abstract

Distance is an integral dimension of migration; yet, in recent years, ignored in migration research except as a control variable. This study examines distance of 1975–80 interstate migration and several explanations for the relations between distance and characteristic of migrants and locations. While earlier research provides only a few findings to replicate, the literature is replete with suggestions concerning the relation between distance and both areal and individual characteristics. These include that distance represents transportation costs, psychic costs — e.g., separation from family and friends and cultural dissimilarity of areas — intervening opportunities and competing migrants, geographic scope of labor market and diminishing information about opportunities.

Observations are individual records from the 1980 one-in-ten-thousand PUMS files. The sample is restricted to nonblack, noninstitutionalized head of households, age 25 to 64 in 1980. Respondents must be civilians and residing in the contiguous 48 states in both 1975 and 1980. Individual characteristics include distance of migration, sex, age, marital status, nativity, education, personal income, occupation, employment status and student status. Most location characteristics are from County Statistics File 2. These characteristics include average wage, per capita income, unemployment, average number of days per year below freezing and variables on local government taxes, educational expenditures, health expenditure and welfare expenditures. Additionally, we use proportion of the population born in state of origin residing at destination as a measure of information flow between origin and destination. We correct for sample selection bias in restricting the study to migrants.

We find outmigration is shaped by characteristics of individuals; however, distance of migration is shaped by characteristics at locations. Findings lend support to an interpretation of distance reflecting psychic costs and information and are consistent with a cost/benefit view of factors contributing to distance of migration.     

Confidence to be given findings derived from fixed-period definitions of migration

Some of the errors in measurement of migration and its determinants that occur with the use of fixed-period data are identified. Consideration of this issue yields a typology of studies based on the nature of the determinants related to migration. Sources of distortion are numerated. The logical severity of each distortion is detailed. Use of the typology permits an appraisal of the potential confidence to be given to the validity of findings associated with classes of migration research which use fixed-period data. A test case is examined to illustrate the usefulness of the typology.This research was supported in part by the NSF Grant No. SOC76-81767, for the study, "A Test of Competing Explanations for Migration Differentials." Funds for computer time and technical assistance were also provided by the Department of Sociology, The University of Tennessee, Knoxville.     

Depression among the homeless

Very little is known about one of the most common mental health problems facing the homeless: high levels of depressive symptomatology. This paper explains variation in the prevalence of depressive symptoms (CES-D) for a random sample of 150 shelter- and street-based homeless persons in the Birmingham metropolitan area. Fifty-nine percent of the sample show the signs of "probable clinical caseness"; yet there is significant variation in the level of symptomatology. A modified version of the social resources model explains 31 percent of the variation in CES-D scores. Although psychological resources play an important role in the distress outcome, as predicted, social supports are found to have limited impact on depression. Life circumstances have significant direct effects on depression. Persons with previous histories of mental illness and with extensive life event histories are more susceptible to distress. Younger persons, the chronically homeless, the street-based homeless, the sick, and the less educated are also more likely to experience depression. This study suggests the importance of understanding homelessness both as a psychological condition and as a complex set of life circumstances and physical deprivations.     

LIFE CHANCES AND CHOICES:

A Weberian lifestyles approach is employed to examine differences in quality of life among the homeless. Using a systematic random sample of 161 homeless people in a mid-sized, Southern metropolitan area, the study focuses on the impact of life chances and social choices on aspects of quality of life in this severely challenged population. Regression results show that a number of life chance and social choice variables affect general and domain-specific well-being. While chances and choices both contribute to these aspects of quality of life, there is only modest evidence of a mediating effect. With the exception of depressive symptoms, life chances appear to play a more important role in quality of life differences than life choices. The specific life chance and choice factors influencing aspects of quality of life vary with each separate well-being outcome. The implications of these findings for general sociology and homeless social policy are explored.     

Role-Taking Accuracy in Medical Encounters: A Test of two Theories

Abstract

This paper tests five hypotheses derived from two contrasting theoretical perspectives on role-taking accuracy: a social contact theory and an institutional resource theory. We investigate how well doctors and patients perceive one another's perspectives in a medical encounter. The cumulative weight of the data supports the proposed social contact theory. Increased contact between residents and patients, as reflected in physician's year in residency, contributes to more accurate role-taking on the part of physicians. Conditions of social compatibility between doctors and patients vis a vis gender or race lead to more accurate role-taking. Finally, personal characteristics are better predictors of role-taking accuracy than institutional status variables such as type of residency training program or doctor's year in residency status.     

Does financial self-efficacy explain gender differences in retirement saving strategies?

Research indicates that women remain less financially prepared for retirement than are men. Little research has examined the gender difference in use of retirement plans. The present research assessed the gender difference in use of employer-sponsored and private retirement plans, and sought to account for this difference. Social status and human capital factors, occupation and industry of employment, and sense of financial self-efficacy were expected to account for gender differences. Findings indicated gender has no relationship with use of private retirement plans. However, females were found to be less likely to use an employer-sponsored plan, and this was largely accounted for by gender differences in occupation.     

Residence background,migration, and fertility

This paper attempts to clarify confusion concerning residence background and migration, and to demonstrate that each of these factors exerts an independent effect on fertility. Basic premises underlying the direction of the effect of these variables on fertility are examined. Data from the 1967 Survey of Economic Opportunity indicate that migration and residence background do have independent effects. It is concluded that present generalizations as to the direction of their influence should be submitted to closer scrutiny with additional data in the future. In addition, an index of rural exposure is developed to test the proposition that fertility varies directly with degree of rural experience. The data only partially support this hypothesis. Moreover, rural-to-urban migrants are found to have only slightly higher fertility than the receiving urban-origin population.     

Medical rationalization, cultural lag, and the malpractice crisis

The theses of this paper are that (1) the practice of medicine has become more formally rationalized in the past century; (2) this rationalization process has been retarded by the professional aspects of medical practice, e.g., the service ethic and the medical profession's exclusive jurisdiction over medicine; (3) this retardation is evident in cultural lag between the development of medical knowledge and how medicine is practiced; and (4) the "malpractice crisis" is a particular force which is accelerating the rationalization process and is overcoming lag. Data from physician surveys and interviews are presented which show the utility of a rationalization-cultural lag model in generating a number of substantive questions pertinent to the quality of rationalized medical care.