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31.
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The volatile fluctuations in automobile inventory levels are explained well by the stock-adjustment model estimated in this paper on monthly time-series data. In contrast to the findings of most previous inventory studies, fluctuations in financial inventory carrying costs (as measured by a service cost of capital) are found to influence the target auto stocks in both a statistically significant and economically important manner. Also, the speed-of-adjustment of automobile inventories to their target level is estimated to be relatively fast, about thirty percent per month.  相似文献   
33.
RACE AND HOME OWNERSHIP: IS DISCRIMINATION DISAPPEARING?   总被引:1,自引:0,他引:1  
Racial differentials in home ownership rates are examined using data on households in the twenty-four largest metropolitan areas. considerable recent reduction in racial discrimination is indicatd, in contrast to the findings of a previous analysis of the St. Louis housing market. The results are maintained under a number of modifications of the model and estimation technique.  相似文献   
34.
Using data from 7272 adolescent US girls, we explore how girls’ race/ethnic group status affects their bodyweight, perceptions of overweight, and weight control practices. We hypothesize that a girl’s race/ethnic status influences her basic identity which in turn prompts her to adopt or reject a “drive for thinness.” After controlling for family and peer support, school engagement, family SES, maturation, and family structure, we find that girls’ race/ethnic status influences their susceptibility to the thinness ideals of mainstream culture. African American girls weigh more than Asian, Hispanic, or White girls, but at any given weight they perceive themselves as overweight and attempt to control their weight less. Asian American and White girls invest most in thinness dynamics. Some evidence also suggests girls from lower SES families are less driven to be thin. Our results affirm the utility of viewing material bodies as “situations” that are experienced and interpreted in accord with identity group relations and dynamics.  相似文献   
35.
This study tested the hypothesis that married psychiatric outpatients would have lower total health services expenditures than divorced or separated patients. Chart review of the 471 individuals attending an academic medical center outpatient psychiatric clinic during 1994 identified 131 married, 40 separated, and 93 divorced patients. Separated men had significantly higher average total charges ($16,890) than married ($5,279) or divorced ($5,539) men by one-way ANOVA (p < .05). The nonparametric Mann-Whitney test also showed that separated men had higher charges than married or divorced men. There were no differences between marital status groups for women.  相似文献   
36.
Abstract

A review of the literature of counterculture-inspired efforts at organizing alternatives to commercialism and technocracy reveals that the duration of many of these organizations was quite short. However, in spite of a general fading away of the larger counterculture, some of these efforts did indeed survive. Among the survivors are the crisis centers, organizations originally seeking to provide nondirective, empathetic, problem-solving help to individuals undergoing a personal crisis. An analysis of a sample of crisis centers based in midwestern states reveals that the internal structure of most of them has, with the passage of time, become increasingly formalized. Furthermore, many of these alternative organizations now serve persons who are less socially marginal and more socially acceptable than were the centers' original clients. Our results seem to suggest that, for both internal organizational reasons and external societal reasons, such groups may provide feelings of worth for their members but often change their initial goals somewhat. Also, despite their initial commitment to a less bureaucratic structure alternative organizations in fact become more bureaucratic.  相似文献   
37.
This study examined the validity of a single-item measure of HIV risk stage of change that HIV prevention contractors were required to collect by the California State Office of AIDS. The single-item measure was compared to the more conventional University of Rhode Island Change Assessment (URICA). Participants were members of Los Angeles County-defined behavioral risk groups recruited from a mobile HIV testing program (N = 123). The study found low correspondence between participants' stage of change on the single-item and the URICA, suggesting that they do not assess the same construct, and that the single item may not provide a valid measure. The current data suggests that the single-item measure should be revised or abandoned in favor of more conventional stage-of-change measures.  相似文献   
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Increased recognition of the consequences associated with child maltreatment has led to greater emphasis on its prevention. Promising maltreatment prevention strategies have been identified, but research continues to suffer from methodological limitations and a narrow focus on select prevention models. This investigation uses data from the Chicago Longitudinal Study to examine mediating mechanisms that link the Chicago Child-Parent Center preschool program to a reduction in overall child maltreatment and, more specifically, child neglect. We use structural equation modeling to test child, family, and school measures hypothesized to mediate the effects of CPC participation on maltreatment and neglect. Results indicate that a substantial proportion of the program's impacts can be accounted for by family support processes, including increased parent involvement in school and maternal educational attainment as well as decreased family problems. The CPC program's association with reduced school mobility and increased attendance in higher-quality schools also significantly mediated its effects on maltreatment and neglect. Further, a decrease in troublemaking behavior contributed modestly to mediating the program's association with maltreatment but not neglect. We discuss the implications of these results for the field of maltreatment prevention.  相似文献   
40.
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