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Book part
Publication date: 3 June 2008

James C. Cox and Glenn W. Harrison

Attitudes to risk play a central role in economics. Policy makers should know them in order to judge the certainty equivalent of the effects of policy on individuals. What…

Abstract

Attitudes to risk play a central role in economics. Policy makers should know them in order to judge the certainty equivalent of the effects of policy on individuals. What might look like a policy improvement when judged by the average impact could easily entail a welfare loss for risk averse individuals if the variance of expected impacts is wide compared to the alternatives.

Details

Risk Aversion in Experiments
Type: Book
ISBN: 978-1-84950-547-5

Article
Publication date: 7 December 2015

Glenn Porter and Robert Ebeyan

The ability to distinguish between “original” and “copied” images has been a persistent forensic imaging difficulty and can be of some importance to certain criminal and…

Abstract

Purpose

The ability to distinguish between “original” and “copied” images has been a persistent forensic imaging difficulty and can be of some importance to certain criminal and civil investigations. The purpose of this paper is to introduce a novel assessment criteria method that incorporates visual and metadata-based information for the purpose of determining whether images are original or second-generation duplicates (copies made by rephotographing the original hardcopy).

Design/methodology/approach

The study reflects difficulties raised from forensic cases and is modelled on fraud investigation that involved images sourced from camera phones. The method involved a new assessment-based criteria approach and the results were evaluated through their application to a sample set of second-generation images.

Findings

The evaluation confirmed the validity of several theorised detection artefacts resulting in the articulation and presentation of 17 detection criteria considered useful for supporting image analysis.

Originality/value

The result of this study is an expansion of the tools available to examiners for addressing complex image authentication problems. The criteria approach also assists with transparently communicating the details of the photo interpretation processes for review and scrutiny.

Details

Journal of Criminological Research, Policy and Practice, vol. 1 no. 4
Type: Research Article
ISSN: 2056-3841

Keywords

Content available
Book part
Publication date: 3 June 2008

Abstract

Details

Risk Aversion in Experiments
Type: Book
ISBN: 978-1-84950-547-5

Content available
Book part
Publication date: 3 June 2008

Abstract

Details

Risk Aversion in Experiments
Type: Book
ISBN: 978-1-84950-547-5

Content available
Article
Publication date: 7 December 2015

Glenn Porter

112

Abstract

Details

Journal of Criminological Research, Policy and Practice, vol. 1 no. 4
Type: Research Article
ISSN: 2056-3841

Article
Publication date: 7 December 2015

Vanessa Rose Spiteri, Glenn Porter and Richard Kemp

Passport photographs are routinely incorporated onto official travel documentation to ascertain an individual’s identity. In Australia, passport photographs may be…

Abstract

Purpose

Passport photographs are routinely incorporated onto official travel documentation to ascertain an individual’s identity. In Australia, passport photographs may be provided by a range of retail suppliers and photographed to a set of standards developed by the Department of Foreign Affairs and Trade. Whether these standards can provide consistency between craniofacial representation and other parameters throughout individual subjects is unknown. The paper aims to discuss this issue.

Design/methodology/approach

This study tests the consistency of passport images with regard to parameters that are likely to affect suitability for use as passport documents. These parameters include, space and dimensionality, craniofacial representation, image sharpness, exposure and colour rendition.

Findings

The examination found there was a significant degree of variation among the test results despite being completed using the same instructional guidelines designed to produce uniformity.

Originality/value

The paper identifies a significant degree of variation among test results and suggests further review.

Details

Journal of Criminological Research, Policy and Practice, vol. 1 no. 4
Type: Research Article
ISSN: 2056-3841

Keywords

Content available
Book part
Publication date: 3 June 2008

Abstract

Details

Risk Aversion in Experiments
Type: Book
ISBN: 978-1-84950-547-5

Book part
Publication date: 3 June 2008

Glenn W. Harrison and E. Elisabet Rutström

We review the experimental evidence on risk aversion in controlled laboratory settings. We review the strengths and weaknesses of alternative elicitation procedures, the…

Abstract

We review the experimental evidence on risk aversion in controlled laboratory settings. We review the strengths and weaknesses of alternative elicitation procedures, the strengths and weaknesses of alternative estimation procedures, and finally the effect of controlling for risk attitudes on inferences in experiments.

Details

Risk Aversion in Experiments
Type: Book
ISBN: 978-1-84950-547-5

Book part
Publication date: 3 June 2008

Steffen Andersen, Glenn W. Harrison, Morten I. Lau and E. Elisabet Rutström

We review the use of behavior from television game shows to infer risk attitudes. These shows provide evidence when contestants are making decisions over very large…

Abstract

We review the use of behavior from television game shows to infer risk attitudes. These shows provide evidence when contestants are making decisions over very large stakes, and in a replicated, structured way. Inferences are generally confounded by the subjective assessment of skill in some games, and the dynamic nature of the task in most games. We consider the game shows Card Sharks, Jeopardy!, Lingo, and finally Deal Or No Deal. We provide a detailed case study of the analyses of Deal Or No Deal, since it is suitable for inference about risk attitudes and has attracted considerable attention.

Details

Risk Aversion in Experiments
Type: Book
ISBN: 978-1-84950-547-5

Book part
Publication date: 3 June 2008

Abstract

Details

Risk Aversion in Experiments
Type: Book
ISBN: 978-1-84950-547-5

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