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This paper empirically assesses the determinants of conditional stock index autocorrelation with particular emphasis on the impact of return volatility that are theoretically linked through the behaviour of feedback traders.

The S&P 100, 500 and the NASDAQ 100 index are considered and volatility in each series is captured using option‐implied estimates taken from the Chicago Board Options Exchange. A seemingly unrelated regression approach is used in which trading volume and volatility are simultaneously modelled.

The results of this study suggest that low or even negative return autocorrelations are more likely in situations where: return volatility is high; price falls by a large amount; traded stock volumes are high; and the economy is in a recessionary phase.

The results confirm that previous related work showing a link between autocorrelation and volatility is not induced by a mechanical relation.

Usage of endogenously determined volatility measures in this area of the literature is justified.

This study provides a robustness test of the autocorrelation/volatility relation, as well as a further exploration of the utility inherent in option‐implied volatility.

Background: the increased incidence of psychosis in African‐Caribbeans in the UK compared to the white British population has been frequently reported. The cause for this is unclear; social factors are said to account for this increase and one factor that is often cited is discrimination.Aims and method: we have looked at two groups of psychotic patients, blacks of Caribbean origin and white British, and present a qualitative comparison of the individual's experience of unfair treatment and its perceived cause.Results: the African‐Caribbean patients did not describe more perceived discrimination than their white counterparts but were more likely to claim that their distress was due to racial discrimination perpetrated by the psychiatric services and society in general. The white patients were more likely to attribute perceived discrimination to their mental illness.Conclusion: this mismatch of explanatory models between black patients and their doctors may account for some inequalities in their treatment, their relative non‐engagement and adverse outcome.Declaration of interest: none.

The purpose of this paper is to help inform the ongoing policy and training debates over use of the Taser and its proper role in the use of force continuum.

This paper qualitatively analyzes all reported court decisions (n=53 as of January 31, 2007) in which a Taser was used by a law enforcement officer.

The majority of reported cases have resulted in the dismissal of claims against officers and municipalities for alleged Taser‐related excessive force violations. In most cases, plaintiffs were unable to show the existence of an unconstitutional policy or custom to support municipal liability. As for the liability of individual officers, most cases were decided in the officer's favor on summary judgment, particularly when the suspect was exhibiting physical resistance. In a few cases, summary judgment was denied to officers when the plaintiff alleged that he or she was fully compliant when the Tasering occurred.

This analysis was confined to reported court decisions, which do not necessarily represent a random sample of all Taser‐related lawsuits filed in the courts. Likewise, Taser‐related lawsuits appear to be increasing as the use of the Taser proliferates among law‐enforcement agencies. Thus, the trends and patterns in Taser liability identified in the analysis may change and evolve with newly decided cases.

The analysis suggests that agencies should review their policy and training guidelines on Taser usage to remain compliant with emerging legal standards. Officers should be trained to articulate a physical threat or potential threat before using a Taser against a verbally resistant subject.

Civil liability is always of concern to law enforcement officials, particularly when an emerging technology is involved. At the time of this writing, there were no published analyses of Taser‐related excessive force claims.

This article aims to propose that increased guidance on the implementation of social marketing principles for sustainability issues can advance both implementation and empirical evaluation. The primary goal of this paper is to ignite further empirical investigation of social marketing for sustainability by first presenting benchmark criteria for one social marketing model – community-based social marketing (CBSM) – and second, applying this framework to the case study of musician Jack Johnson’s “All at Once” (AAO) campaign.

The research design is twofold. First, based on Doug McKenzie-Mohr’s CBSM model, a series of 21 benchmarks for assessing the key components of an effective CBSM initiative was developed. Second, this tool was applied to information gathered from Jack Johnson’s extensive outreach promoting AAO initiatives including reports, videos as well as interviews and in-person meetings with the Jack Johnson team.

Application of the benchmark criteria to the Jack Johnson case study showed that seven out of the 21 benchmarks were integrated into the AAO campaign; seven were partially integrated and seven were not integrated in the program’s design. In particular, the use of commitments, incentives, norms and social diffusion was clearly present as was a final evaluation of the full-scale implementation of the campaign.

The CBSM benchmarks are meant as a starting point to further assess and compare the effectiveness of CBSM initiatives. Further research should be done to explore how criteria should be weighted and which of the 21 principles need to be present in the design and implementation of an effective CBSM program.

Analysis of organizational decline has become central to the study of economy and society. Further advances in this area may fail however, because two major literatures on the topic remain disintegrated and because both lack a sophisticated account of how social structure and interdependencies among organizations affect decline. This paper develops a perspective which tries to overcome these problems. The perspective explains decline through an understanding of how social ties and resource dependencies among firms affect market structure and the resulting behavior of firms within it. Evidence is furnished that supports the assumptions of the perspective and provides a basis for specifying propositions about the effect of network structure on organizational survival. I conclude by discussing the perspective's implications for organizational theory and economic sociology.

Personal acknowledgements are commonplace in the scholarly communication process. The scale and significance of the phenomenon vary from field to field, and from journal to journal. Variation in practice is revealed in a twenty‐year analysis of acknowledgements in four of the top‐ranked information/library science journals (1971–1990). A small number of individuals are highly acknowledged; a majority are mentioned infrequently, if ever. The concentration is similar to that found in citation analyses of research productivity. There is a positive rank order correlation between frequency of acknowledgement and citation frequency. The implications for both institutional and individual evaluation are discussed.

July 26, 1967 Building and construction — Safety Regulations — Breach — Causation — Failure to provide suitable scaffold — Whether workman would have used scaffold if provided — Whether failure to provide cause of fall — Construction (General Provisions) Regulations, 1961 (S.I. 1961, No. 1580), reg.7(2).

The purpose of this paper is to discuss the following questions: what is the origin of the concepts of documents and documentation? Are there a need for these concepts in every culture? Who gives the terms for their definitions, and what are the consequences of different terminology?

The authors use interdisciplinary methodology, combining document and information theory and Sámi linguistics. The aim of this paper is to discuss documentation from the perspective of the Sámi, with some examples from other indigenous groups.

Oral accounts, legends, traditional songs and traces in the landscape are seen as documents and documentation in Sámi and other indigenous cultures. The paper presents different theories in order to interpret and understand the specific information content in indigenous forms of documentation.

Indigenous ways of documentation have been accepted as valid proof of ownership or the right to extensive use of land resources. When no written records exist, oral testimonies and the landscape itself can be seen as documenting traditional use and has been accepted as evidence in high courts in Norway and Canada. The authors have also seen that the rich Sámi snow terminology is used as concepts in different fields of natural sciences.

The Sámi understanding of the concepts of document and documentation contributes to the traditional information and documentation disciplines by introducing ways of seeing natural phenomenon as fundamental forms of information.

In recent years, guides to hiking trails and wilderness areas have enjoyed an increase in popularity. Here, Douglas J. Ernest and Lewis B. Herman evaluate more than 100 such books.

Describes the proposed “a history of the book in Britain” project to be published in seven volumes by Cambridge University Press. Describes the background to the project in relation to the disparate nature of studies of the history of the book in Britain and work already done. Presents an outline of the structure of the proposed publication.