联盟组合多样性及其与绩效维度的关系

基于480家机构的以自我为中心的网络数据,分析了联盟组合多样性和财务绩效、激进式创新绩效、渐进式创新绩效等三个重要绩效维度之间的关系.其中,联盟组合多样性与财务绩效负相关;而联盟组合多样性与激进式创新绩效呈现倒U形关系;联盟组合多样性与渐进式创新绩效呈现递减收益正相关.结果表明,管理者应该意识到联盟组合多样性的可能的消极影响,并且意识到不同水平的联盟组合多样性是最有益的.     

Ethical challenges in researching in group homes for people with severe learning difficulties: shifting the balance of power

Our aim in this paper is to open up debate about informed consent. We do this by presenting stories from group homes where staff have frustrated our research efforts and marginalised the interests of people with severe learning difficulties. We problematise normative ethics and argue that in some circumstances the basic principle of informed consent should be waived for employees of human service organisations. We maintain that, in such circumstances, researchers and an organisation’s senior managers can still act in a manner that is consistent with the broad aims of ethical regulation. We consider the role of Research Ethics Committees and suggest that in order to fully consider the conflicting interests of multiple stakeholders, the application of different ethical theories is required. A requirement for making balanced ethical judgements is to see outside the extant dominant view of ethical research standards and behaviour.     

The Hanging of Thomas Jeremiah: A Free Black Man's Encounter with Liberty

Based on new archival findings and new interpretations, this article presents new perspectives of the ‘Amistad case’, bringing it back into Caribbean and Atlantic history. The article demonstrates that the captain of the Amistad, Ramón Ferrer, and his crew were transatlantic slave traders and smugglers and provides proof that the Amistad was built in Cuba. Moreover, as a result of the enormous profits of the illegal slave trade, Ferrer bought more slave ships and invested much money in the modernization of plantation production. This article also critiques one of the most influential narratives about the Atlantic crossing of the Amistad captives: that they did so in a ‘Portuguese ship named Teçora’. As the harbor lists of Havana in 1839 show, the captives came in a ship named Hugh Boyle under the American captain, J.R. Brown. All this gives new insights into the American participation in the hidden Atlantic and the significance of Cuba as a provider of contraband captives for the American South.     

Sincere versus sophisticated voting when legislators vote sequentially

Elsewhere (Groseclose and Milyo 2010), we examine a game where each legislator has preferences over (i) the resulting policy and (ii) how he or she votes. The latter preferences are especially important when the legislator is not pivotal. We show that when the game follows the normal rules of legislatures—most important, that legislators can change their vote after seeing how their fellow legislators have voted—then the only possible equilibrium is one where all legislators ignore their policy preferences. That is, each legislator votes as if he or she is not pivotal. The result, consistent with empirical studies of Congress, suggests that legislators should tend to vote sincerely, rather than sophisticatedly. In this paper we examine how outcomes change if we change the rules for voting. Namely, instead of a simultaneous game, we consider a game where legislators vote sequentially in a pre-determined order. We show that, opposite to the simultaneous game, an alternative wins if and only if a majority of legislators’ policy preferences favor that alternative. Our results suggest that if Congress adopted this change in rules, then sophisticated voting would become frequent instead of rare.     

Children placed in long-term family foster care: A longitudinal study into the development of problem behavior and associated factors

Due to prior experiences of trauma and abuse, many foster children have behavioral problems. The placement of the child in a family foster home is expected to reduce the behavioral problems. However, this expectation is seldom met and mostly behavioral problems increase or remain stable during placement. Research on the development of behavioral problems in foster children is scarce. Moreover, most of the research results are situated on a group level, which obscures the development of problem behavior on a case level. This study investigated the development of problem behavior of 49 foster children on a case level and the association of global, contextual, familial and child factors with the increase or decrease of problem behavior. Over a two year period 18 foster children had more, 23 just as much and 8 less problem behavior. An increase was associated with the use of more negative parenting strategies by the foster mothers. A decrease was related to the use of supportive parenting. Support of foster parents aiming at reducing the use of negative discipline practices and promoting the use of supportive parenting may have a positive effect on the development of foster children.     

The effect of personalization on response rates and data quality in web surveys

Personalizing correspondence has often shown to significantly increase survey response rates in mail surveys. This study experimentally tests whether personalization of email invitations acts correspondingly to web survey response rates. Also, it is investigated whether personalization influences data quality. The results of the study, using a large student sample, show that personalization significantly increases the web survey response rate by 8.6 percentage points. The data quality does not appear to be affected in any major way by personalizing the email invitations. However, the analyses do show that respondents of the personalization condition tend to respond with more social desirability bias to sensitive questions. Therefore, it is concluded that personalization has positive effects on the survey response rate, but one should carefully consider whether or not to personalize when a survey on sensitive topics is conducted.     

Analyses of multiple types of online gambling within one provider: an extended evaluation framework of actual online gambling behaviour

The aim of this article is to extend previous publications of actual online gambling behaviour that neglected involvement across multiple types of gambling and did not provide levels of at-risk involvement. Behavioural data from 27,653 subscribers of an online gambling provider (bwin) in February 2005 were reanalysed across eight products over seven months. Established involvement levels of offline gambling segregated possible online at-risk gamblers. Forty-seven percent of the sample exceeded at least one of the two most conservative thresholds. Each additionally used gambling product increased the risk of transgressing involvement cut-offs by 3.06 to 4.27 times, but type-specific risks decreased strongly after adjusting for involvement in multiple gambling types. Only Poker and Live-action betting remained significant risk factors after adjustment. Taken together, cross-product analyses of gambling patterns lay the groundwork for an extended understanding of individual online gambling behaviour and overcome the methodological artefacts of isolated analyses.     

HIV/AIDS and Urbanization

It is well known that levels of HIV prevalence tend to be appreciably higher inurban areas. This article considers the reasons for this and shows that within world regions that are relatively homogeneous with respect to their experience of HIV/AIDS, variation in the level of urbanization corresponds to about one‐third of variation in estimated HIV prevalence. Furthermore, for populations in the world's worst‐affected area—eastern and southern Africa—there are signs that, partly by differentially raising urban death rates and depressing urban birth rates, HIV/AIDS is slowing the pace of urbanization. Finally, in countries with very high levels of HIV infection and relatively low birth rates, such as in South Africa, the urban sector will soon constitute a “demographic sink”—with death rates exceeding birth rates.     

DUST:

Following the perspective of "sociological miniaturism," proposed by Stolte, Fine, and Cook (2001), we examine the significance of dust in social life in order to examine the reverberations of the micro-features of everyday life on social structure. Through the examination of the routine, the unexamined, and the commonplace, we hope to gain some insight on how the taken-for-granted aspects of lived experience fit into the larger social order. Dust, by virtue of its "smallness," provides a window through which we can explore social structural issues using microsociological analysis. Specifically we examine how dust and techniques for its control are linked to issues of gender, work, political economy and nation.