HOW TRADING INSTITUTIONS AFFECT FINANCIAL MARKET PERFORMANCE: SOME LABORATORY EVIDENCE

The effects of trading institutions on market efficiency and trading volume are examined. The trading institutions are computerized versions of continuous double auction and "clearinghouse" markets. Traders are experienced, profit-motivated undergraduates. The traded good is a financial asset whose monetary value is state- and trader type-contingent. Traders possess asymmetric private information on asset value. The results show that clearinghouse markets are as informationally efficient as double auction markets and almost as allocationally efficient; the double auction encourages greater trading volume but the clearinghouse provides greater depth; public orderflow information enhances double auction performance but impairs clearinghouse performance.     

Social work with Bosnian Muslim refugee children and families: a review of the literature

More than two million Bosnian Muslims were ethnically cleansed in the Balkan region; of these, 200,000 were killed while the others were forced to flee their homes and become refugees. This article focuses on the influence of societal and cultural values coupled with wartime experiences on the transition of Bosnian refugee families to their new countries. Consideration is given to culturally competent theoretical frameworks and practice principles social workers can use to assist Bosnian Muslim children and families in their adaptation process within their resettlement communities.     

Organising Services for People with Mental Handicap: The Californian Experience

The organisation of services for California's mentally handicapped population is outlined and critically examined. Its distinctive features are noted: a concern for rights, rather than needs; an underlying free market philosophy; an explicit attempt to combine public and private enterprise; and an elaborate system of checks and balances designed to restrain the welfare bureaucracies and ensure that they remain responsive to the changing nature of individual need. It is argued that, despite certain limitations, the Californian system does seriously address three problems that bedevil all attempts to develop a satisfactory system of care for people with mental handicaps: the inherent powerlessness of the client group; the diversity and fragmentation of services; and bureaucratic inertia.     

THE INFORMATION SOCIETY AS MEGA-MACHINE

Too often the history of information and communication technologies (ICTs) is wrenched out of the history of technology and presented as something altogether separate and therefore different, rendering previous analyses irrelevant. However, there are sufficient analytical tools to hand without the continual invention of new paradigms to understand the current stage of technological advance. To support this contention, in this article, the continuing relevance of Lewis Mumford is explored. Mumford's discussion of the megalopolis and the emergence of the invisible city as its most developed state make a direct link with the networked information society, establishing a link between the information society and Mumford'sanalysis of the previous history of technology.At the centre of Mumford'sdiscussion of this history is the dialectic interaction of authoritarian and democratic technics. Mumford's notion of technics stresses that technologies can not be divided from the social relations in which they appear. In the information society,this dialectical pair map onto the twin dynamics of enclosure and disclosure. The former dynamic represents the control of information through commodification and marketization, the latter the recognition of the empowering and emancipatory qualities of ICTs. Up until now,discussions of the information society have regarded only one or other dynamic as normal, whereas utilizing Mumford'sinsight, the contradictory character of the information society can be theorized without rendering the second dynamic abnormal. Thus, the article concludes that recourse to Mumford's ideas, to re-embed ICTs in the history of technology, allows a more nuanced and fruitful treatment of current developments in information society.     

Relative effect sizes for measures of risk

Effect sizes are an important component of experimental design, data analysis, and interpretation of statistical results. In some situations, an effect size of clinical or practical importance may be unknown to the researcher. In other situations, the researcher may be interested in comparing observed effect sizes to known standards to quantify clinical importance. In these cases, the notion of relative effect sizes (small, medium, large) can be useful as benchmarks. Although there is generally an extensive literature on relative effect sizes for continuous data, little of this research has focused on relative effect sizes for measures of risk that are common in epidemiological or biomedical studies. The aim of this paper, therefore, is to extend existing relative effect sizes to the relative risk, odds ratio, hazard ratio, rate ratio, and Mantel–Haenszel odds ratio for related samples. In most scenarios with equal group allocation, effect sizes of 1.22, 1.86, and 3.00 can be taken as small, medium, and large, respectively. The odds ratio for a non rare event is a notable exception and modified relative effect sizes are 1.32, 2.38, and 4.70 in that situation.     

Childcare and parental work schedules: a comparison of childcare arrangements among Finnish,British and Dutch dual-earner families

This study examined the association between parental work schedules and non-parental childcare arrangements among dual-earner families in Finland, the Netherlands and the UK. Data from the ‘Families 24/7’ web survey were used, including 937 parents with children aged 0–12 years. Results showed a negative association between non-standard work and formal childcare across all countries. A similar association was found for using a combination of formal and informal childcare, whereas solely using informal childcare was not associated with work characteristics. Country differences showed that, compared with Finland, the probability of using formal childcare was lower in the Netherlands, whereas the probability of using informal childcare was higher in the UK. Interaction effects showed that the negative association between non-standard work and formal childcare was stronger in the Netherlands, compared with Finland. Also, the positive association between working hours and formal childcare was weaker for Dutch and British parents. This study identified the challenges that parents face when arranging childcare outside of office hours. Although the supply of formal childcare seems to be insufficient, using informal childcare introduces other potential problems. Because a considerable proportion of employees work non-standard hours, governments should help these parents in meeting their need for high quality childcare.     

Exploring How an Elementary Teacher Plans and Implements Social Studies Inquiry

Social studies continues to be marginalized in elementary grades, yet the C3 Framework and its Inquiry Arc offer possibilities for high-quality elementary social studies instruction. However, the C3 Framework requires that teachers possess an adequate understanding of how to implement inquiry within the various social studies disciplines, which we argue is an aspect of the pedagogical content knowledge necessary for effective elementary social studies instruction. This single-case study follows an elementary teacher through her use of the C3 Framework, Inquiry Arc, and a related curriculum approach called the Inquiry Design Model as she conceptualized, planned, and implemented inquiries in her fifth-grade classroom. By incorporating this new knowledge into her existing understanding of social studies pedagogy, as well as her knowledge of her students and specific educational context, the teacher was able to successfully navigate some of the challenges associated with implementing social studies inquiry in elementary classrooms.     

The effect of exposure to a professor with a visible disability on students' attitudes toward disabilities

An exploratory study was conducted on a small convenience sample of undergraduate social work students. The Modified Issues in Disability Scale was used to collect data on attitudes toward disability. There was no statistically significant difference in the attitudes scores among students who had different levels of contact with persons with disabilities. There was, however, a statistically significant difference between students who had a professor with a disability and those who did not. The former had more positive attitudes toward disability. These findings suggest that schools of social work should recruit more professors with disabilities.