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891.
We present a general framework to study the project selection problem in an organization of fallible decision-makers. We show that when the organizational size and the majority rule for project acceptance are optimized simultaneously, the optimal quality of decision-making, as determined by the decision criterion, is invariant, and depends only on the expertise of decision-makers. This result clarifies that the circumstances under which the decision-making quality varies with the organizational structure are situations where the organizational size or majority rule is restricted from reaching the optimal level. Moreover, in contrast to earlier findings in the literature that the hierarchy and the polyarchy are generally sub-optimal structures, we show that when the size, structure and decision criterion are simultaneously optimized, the hierarchy and the polyarchy are in fact the only possible optimal organizational structures when decision-making costs are present.
Winston T. H. KohEmail:
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892.
This paper extends the work of Gehrlein and Fishburn (1976) and Gehrlein (1982) by providing a general theorem relating to the analytical representation of the probability of an event in a given space of profiles. It applies to any event characterized by a set of linear inequalities regardless of whether the coefficients defining the inequalities are integer or fractional coefficients. An algorithm for the probability calculation is also suggested. This suggested methodology is used to provide a complete characterization of the vulnerability properties of the four scoring rules studied in Lepelley and Mbih (1994) to manipulation by coalitions in a 3-alternative n-agent society. Received: 21 October 1997/Accepted 19 November 1998  相似文献   
893.
Forty married couples participated in a randomized trial comparing 8 weekly sessions of emotion-focused therapy (EFT) for couples to a group of couples who were placed on an 8-week waiting list. A composite marital satisfaction score was created from scores on the Dyadic Adjustment Scale, Positive Feelings Questionnaire, and Personal Assessment of Intimacy in Relationships scale. Controlling for pretest scores, participants in the treatment group had significantly higher levels of marital satisfaction after 8 weeks than wait-list participants. Supplementary analyses identified variables associated with gains in therapy and with dropping out of the study.  相似文献   
894.
895.
Countertransference is a rich source of understanding of client dynamics but can be difficult to detect. A case vignette is used to illustrate how changes in the arrangements of therapy should be viewed as red flags alerting the therapist to possible countertransference. By paying careful attention to the client's derivative response to the therapist's agreeing to a request for a change in appointment times, the therapist was able to understand the unconscious motive behind the request, as well as her own countertransference reasons for participating in the resistance expressed in the request. When, based on this under-standing, the therapist was then able to hold to the framework and maintain the previous appointment schedule, this furthered the treatment by providing a model for introjection and by promoting understanding rather than acting out. In complicated therapy situations where treatment of more than one family member by a single therapist is indicated, such careful attention to the framework and to the client's derivative response to the therapist's interventions is particularly important.An earlier version of this paper was presented before the Annual Conference of the Washington State Society for Clinical Social Work on May 14, 1984.  相似文献   
896.
897.
The Earned Income Tax Credit (EITC) is a refundable credit for low-income workers mainly targeted at families with children. This study uses the Survey of Income and Program Participation’s topical modules on Assets and Liabilities to examine associations between the EITC expansions during the early 1990s and the unsecured debt of the households of single mothers. We use two difference-in-differences comparisons over the study period 1988–1999, first comparing single mothers to single childless women, and then comparing single mothers with two or more children to single mothers with exactly one child. In both cases we find that the EITC expansions are associated with a relative decline in the unsecured debt of affected households of single mothers. While not direct evidence of a causal relationship, this is suggestive evidence that single mothers may have used part of their EITC to limit the growth of their unsecured debt during this period.  相似文献   
898.
Few studies have examined social work students’ reflections on and experiences working with lesbian, gay, bisexual, queer, and questioning persons and addressing the intersection of race/ethnicity and sexuality within practice. This study explored current master’s of social work student (n = 11) and recent graduate (n = 7) reflections on conducting an objective structured clinical practice interaction with an African Canadian youth coming out as a lesbian. Narrative thematic analyses of reflective dialogues highlighted a variation of competence in gay affirmative practice across attitudes (managing personal reactions), knowledge (addressing diversity; terminology and information), and skills (readiness; challenging heterosexism). Curriculum development and agency-based training is recommended to address gaps in knowledge and competence regarding gay affirmative approaches.  相似文献   
899.
This article examines dependency on cross-border labor and marriage along the international frontier in the Kelabit Highlands of Sarawak, Malaysia (Borneo) and some local efforts to restrict outsiders. The international border in this remote region of Borneo is highly permeable, and border-crossing activities, including seasonal migrant wage labor and cross-border marriage, are crucial both to the local political economy and to the reproduction of the Kelabit family and farm. This article explores the unique position of the Kelabit as they attempt to appropriate aspects of state power or use the rhetoric of state power in their efforts to maintain a status quo with regard to neighboring, and closely related, migrant workers from across the border.  相似文献   
900.
Research findings on comorbidity and pathological gambling are non–existent in Chinese communities. The objectives of this study were to: (a) determine the prevalence of comorbid mood and adjustment disorders among pathological gamblers seeking treatment in Hong Kong; (b) compare demographic profiles and clinical features in pathological gamblers with and without comorbid mood and adjustment disorders; and (c) explore the association and temporal relationship between pathological gambling and comorbid mood and adjustment disorders. Assessment instruments included demographic data, BSI, SCID-I, ASI and LIFE-RIFT. Results showed that about two-thirds (63.7%; n = 128) of 201 participants reported lifetime comorbid psychiatric disorders. Most common comorbid disorders were mood disorders (29.4%; n = 59) and adjustment disorders (20.9%; n = 42). Pathological gamblers with comorbid mood or adjustment disorders showed more severe levels of psychopathology, impairment in psychosocial functioning and gambling problems. This study is important because it is the first scientific comorbidity study among pathological gamblers in a Chinese context.  相似文献   
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