Is ROC analysis a tool that should replace probative analysis in studying lineups?

2016 ◽  
Vol 6 (1) ◽  
pp. 42-48 ◽  
Author(s):  
Avraham Levi
Keyword(s):  
Malignant Tumor ◽  
Design Methodology ◽  
Roc Analysis ◽  
Roc Curves ◽  
Content Type ◽  
Inappropriate Use ◽  
Confidence Judgments ◽  
Innocent Suspect

Purpose – The purpose of this paper is to explain why ROC analysis is an inappropriate replacement for probative analysis in lineup research. Design/methodology/approach – Taking as the medical example comparing two methods to detect the presence of a malignant tumor (Mickes et al., 2012), and operationally defining ROC analysis: radiologists are shown the results from two methods. Their confidence judgments create a graph of correct identifications by mistaken ones. The author can compare the methods on radiologists’ ability to differentiate sick from healthy. Lineup researchers create two distinct lineups. In target-present lineups, witnesses differentiate between the target and the foils, not the target and the innocent suspect. In target-absent lineups, witnesses cannot even differentiate between innocent suspects and foils, having seen none. Findings – Eyewitness ROC curves are similar to probative analysis, but provide less useful information. Research limitations/implications – Researchers ware warned against using ROC when conducting lineup research. Originality/value – Preventing inappropriate use of ROC analysis.

The power of impossible

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Alexandre Asselineau ◽  
Gilles Grolleau
Keyword(s):  
Competitive Advantage ◽  
Mental Model ◽  
Design Methodology ◽  
Competitive Advantages ◽  
Content Type ◽  
Inappropriate Use ◽  
The World ◽  
Sustainable Competitive Advantages ◽  
Practical Implications ◽  
A Current

Purpose Labeling something as “impossible” can be performative and deprive businesses from promising ideas, by activating limiting mental models and self-fulfilling prophecies. Adopting an “everything may be(come) possible” thinking as the default option can lead businesses to discover unexpected and valuable directions and make the world a better place. This paper aims to propose practical insights to harness the power of “impossible” thinking such as considering impossibility as a current and temporary state, adopting an unconventional mindset and redirecting the reflection on what is needed to make the idea possible. Falling in love with any impossible target is obviously not without downsides. Design/methodology/approach This paper discusses conceptually how adopting an impossible thinking approach can help business to discover unexpected and valuable directions. Findings The authors caution managers on the inappropriate use of the “impossible” label that can be performative, activate a limiting mental model, lead to a self-fulfilling prophecy and deprive businesses from promising ideas. This paper proposes ways by which the power of impossible thinking can be harnessed to make a difference. Research limitations/implications Discarding impossible ideas seems perfectly justified from a logical or cultural viewpoint while constituting simultaneously a bad decision from a business viewpoint. The generalization of authors’ insight must be undertaken with caution, given that harnessing the power of impossible does not mean to fall in love with any impossible idea. Practical implications Learning to not neglect seemingly impossible options and sometimes to reveal them can lead to sustainable competitive advantages. Social implications While generating a competitive advantage for the concerned companies, implementing impossible ideas can also contribute to make the world a better place. Originality/value The authors identify some mechanisms that can make impossible thinking beneficial and profitable for companies. These insights can help managers to nurture an environment that facilitates the emergence of pathbreaking advances.

scholarly journals The potential uses and abuses of a power of entry for social workers in England: a re-analysis of responses to a government consultation

2016 ◽  
Vol 18 (5) ◽  
pp. 256-265 ◽  
Author(s):  
Caroline Norrie ◽  
Jill Manthorpe ◽  
Stephen Martineau ◽  
Martin Stevens
Keyword(s):  
At Risk ◽  
Social Workers ◽  
Design Methodology ◽  
Legal Framework ◽  
Community Dwelling ◽  
Third Party ◽  
Policy Makers ◽  
Content Type ◽  
Inappropriate Use ◽  
Decision Making Capacity

Purpose Whether social workers should have a power of entry in cases where individuals seem to be hindering safeguarding enquiries for community-dwelling adults at risk is a topical question in England. The purpose of this paper is to present the findings of a re-examination of relevant sections of the 2012 Government Safeguarding Power of Entry Consultation. Design/methodology/approach Re-analysis of responses to question three of the 2012 Government’s Safeguarding Power of Entry Consultation was undertaken in late 2015-early 2016. The consultation submissions were located and searched for information on views of the prevalence of the situations where access to an adult at risk (with decision-making capacity) is being hindered by a third party and the nature of examples where a new power of entry might be considered appropriate by consultation respondents. Findings The majority of respondents to the consultation generally reported that situations when a new power of entry would be required were not encountered regularly; however a minority of respondents stated these situations occurred more frequently. Examples of situations where third parties appeared to be hindering access were given across the different categories of adults at risk and types of abuse and current practices were described. Respondents observed that the risks of excessive or inappropriate use of any new powers needed to be considered carefully. Originality/value This re-analysis sheds light on the prevalence and circumstances of the problems encountered about access to adults at risk. The legal framework of adult safeguarding continues to be of interest to policy makers, researchers and practitioners.

SEC intensifies scrutiny of fee-based accounts and reverse churning

2014 ◽  
Vol 15 (1) ◽  
pp. 48-51
Author(s):  
Daniel A. Nathan ◽  
Lauren A. Navarro
Keyword(s):  
Risk Analysis ◽  
Financial Services ◽  
Design Methodology ◽  
Appropriate Use ◽  
Content Type ◽  
Practical Advice ◽  
Inappropriate Use ◽  
The Past ◽  
Problematic Behaviors ◽  
Practical Implications

Purpose – To explain the SEC's focus on the appropriate use of fee-based accounts and disciplinary efforts to identify and prevent “reverse churning.” Design/methodology/approach – Describes the quantitative analytics used in the SEC's Risk Analysis Examinations (RAEs) to identify reverse churning and other problematic behaviors, explains why the inappropriate use of fee-based or “wrap fee” accounts and “double charging” can be unfair to investment clients, summarizes prior NASD and FINRA guidance and enforcement regarding fee-based account supervision, and recommends account monitoring actions that firms should take to ferret out reverse churning. Findings – The SEC's continuing interest in reverse churning and double-charging, and its use of new examination and investigation tools, together suggest that the future will see more investigations and enforcement actions against firms who place clients in a fee-based or “wrap-fee” account without having adequate supervisory procedures to determine and monitor whether such accounts are appropriate for those clients. Practical implications – Monitoring accounts to ferret out reverse churning has proven difficult for firms in the past, since spotting inactivity might be more challenging than detecting excessive trades (known as “churning”). However, it seems that the SEC and its staff are enhancing their ability to identify and address these violations. Originality/value – Practical advice from experienced financial services lawyers.

scholarly journals Vulnerable adults in police custody

2019 ◽  
Vol 22 (1) ◽  
pp. 5-8
Author(s):  
Ian Cummins
Keyword(s):  
Design Methodology ◽  
Research Literature ◽  
Police Custody ◽  
England And Wales ◽  
Content Type ◽  
Increased Risk ◽  
Vulnerable Adults

Purpose The purpose of this paper is to discuss the recent National Appropriate Adult Network (NAAN) report on the role of the appropriate adult. Design/methodology/approach This paper is based on the NAAN report and a review of relevant policy and research literature. Findings There to Help 2 highlights that there are still significant gaps in the provision of appropriate adult schemes across England and Wales. These gaps potentially place vulnerable adults at increased risk. Originality/value This paper is a review of recent research.

Co-workers’ perceptions of and reactions to employee’s involuntary demotion

2019 ◽  
Vol 41 (4) ◽  
pp. 740-757 ◽  
Author(s):  
Sophie Hennekam ◽  
Subramaniam Ananthram ◽  
Steve McKenna
Keyword(s):  
Design Methodology ◽  
Emotional Responses ◽  
Emotional Reaction ◽  
Content Type ◽  
Informational Justice ◽  
Behavioural Responses ◽  
Behavioural Reaction ◽  
Three Stages ◽  
Depth Interviews ◽  
The Way

Purpose The purpose of this paper is to investigate how individuals perceive and react to the involuntary demotion of a co-worker in their organisation. Design/methodology/approach The authors draw on 46 semi-structured in-depth interviews (23 dyads) with co-workers of demoted individuals. Findings The findings suggest that an individual’s observation of the demotion of a co-worker has three stages: their perception of fairness, their emotional reaction and their behavioural reaction. The perception of fairness concerned issues of distributive, procedural, interpersonal and informational justice. The emotional responses identified were feelings of disappointment/disillusion, uncertainty, vulnerability and anger. Finally, the behavioural reactions triggered by their emotional responses included expressions of voice, loyalty, exit and adaptation. Originality/value Perceptions of (in)justice perpetrated on others stimulate emotional and behavioural responses, which impacts organisational functioning. Managers should therefore pay attention to the way a demotion is perceived, not only by those directly concerned, but also by co-workers as observers.

Consumer value creation through WhatsApp use

2019 ◽  
Vol 32 (4) ◽  
pp. 455-471
Author(s):  
Jorge Cruz-Cárdenas ◽  
Jorge Guadalupe-Lanas ◽  
Ekaterina Zabelina ◽  
Andrés Palacio-Fierro ◽  
Margarita Velín-Fárez ◽  
...  
Keyword(s):  
Latin American ◽  
Value Creation ◽  
Emotional Support ◽  
Design Methodology ◽  
Instant Messaging ◽  
Role Performance ◽  
Content Type ◽  
Consumer Value ◽  
Depth Interviews ◽  
Practical Implications

Purpose The purpose of this paper is to understand in-depth how consumers create value in their lives using WhatsApp, the leading mobile instant messaging (MIM) application. Design/methodology/approach The study adopts the perspective of customer-dominant logic (CDL) and uses a qualitative multimethod design involving 3 focus groups and 25 subsequent in-depth interviews. The research setting was Ecuador, a Latin American country. Findings Analysis and interpretation of the participants’ stories made it possible to identify and understand the creation of four types of value: maintaining and strengthening relationships; improving role performance; emotional support; and entertainment and fun. In addition, the present study proposes a conceptual model of consumer value creation as it applies to MIM. Practical implications Understanding the way consumers create value in their lives using MIM is important not only for organizations that offer MIM applications, but also for those companies that develop other applications for mobile phones or for those who wish to use MIM as an electronic word-of-mouth vehicle. Originality/value The current study is one of the first to address the topic of consumer behavior in the use of technologies from the perspective of CDL; this perspective enables an integrated qualitative vision of value creation in which the consumer is the protagonist.

scholarly journals Advantages and potential challenges of data management in e-maintenance

2019 ◽  
Vol 25 (3) ◽  
pp. 378-396 ◽  
Author(s):  
Arian Razmi-Farooji ◽  
Hanna Kropsu-Vehkaperä ◽  
Janne Härkönen ◽  
Harri Haapasalo
Keyword(s):  
Data Management ◽  
Design Methodology ◽  
Management Practices ◽  
Future Research ◽  
Conceptual Approach ◽  
Content Type ◽  
Different Types ◽  
Maintenance Systems ◽  
Industry Leader ◽  
Practical Implications

Purpose The purpose of this paper is twofold: first, to understand data management challenges in e-maintenance systems from a holistically viewpoint through summarizing the earlier scattered research in the field, and second, to present a conceptual approach for addressing these challenges in practice. Design/methodology/approach The study is realized as a combination of a literature review and by the means of analyzing the practices on an industry leader in manufacturing and maintenance services. Findings This research provides a general understanding over data management challenges in e-maintenance and summarizes their associated proposed solutions. In addition, this paper lists and exemplifies different types and sources of data which can be collected in e-maintenance, across different organizational levels. Analyzing the data management practices of an e-maintenance industry leader provides a conceptual approach to address identified challenges in practice. Research limitations/implications Since this paper is based on studying the practices of a single company, it might be limited to generalize the results. Future research topics can focus on each of mentioned data management challenges and also validate the applicability of presented model in other companies and industries. Practical implications Understanding the e-maintenance-related challenges helps maintenance managers and other involved stakeholders in e-maintenance systems to better solve the challenges. Originality/value The so-far literature on e-maintenance has been studied with narrow focus to data and data management in e-maintenance appears as one of the less studied topics in the literature. This research paper contributes to e-maintenance by highlighting the deficiencies of the discussion surrounding the perspectives of data management in e-maintenance by studying all common data management challenges and listing different types of data which need to be acquired in e-maintenance systems.

An exploratory empirical study of whistleblowing and whistleblowers

2020 ◽  
Vol 27 (3) ◽  
pp. 755-770
Author(s):  
Maria Krambia-Kapardis
Keyword(s):  
Statistical Analysis ◽  
Design Methodology ◽  
Research Topic ◽  
Due Date ◽  
Content Type ◽  
Unethical Behaviour ◽  
Eu Member States ◽  
European Directive ◽  
Original Survey ◽  
Practical Implications

Purpose The purpose of this study is to develop a profile of whistleblowers and to determine whether whistleblowing legislation would encourage those individuals to bring to light some illegal or unethical behaviour that otherwise would remain in the shadows. Design/methodology/approach Having identified whistleblowing correlation, a survey was carried out in Cyprus of actual whistleblowers and could-have-been whistleblowers. Findings Males between 46 and55 years of age, regardless of whether they have dependents or hold senior positions in organizations are significantly more likely to blow the whistle. However, could-have-been whistleblowers did not go ahead because they felt that the authorities would not act on their information. Research limitations/implications Because of the sensitive nature of the research topic and the fact that only whistleblowers or intended whistleblowers could participate in the study, the sample size is limited as a result. This, in turn, limits both the number of respondents in each category (actual and intended) as well as constrains the statistical analysis that could be carried out on the data. Practical implications It remains to be seen whether EU Member States shall implement the European Directive 2019/1937 on the protection of persons who report breaches of Union Law, in its entirety by the due date, namely December 2021. Originality/value This study provides a literature review of whistleblowing and reports an original survey against the backdrop of the European Directive.

Interest rate option hedging portfolios without bank account

2019 ◽  
Vol 37 (1) ◽  
pp. 134-142
Author(s):  
Alberto Bueno-Guerrero
Keyword(s):  
Design Methodology ◽  
Contingent Claim ◽  
Necessary And Sufficient Condition ◽  
Barrier Option ◽  
Bank Account ◽  
Content Type ◽  
Option Hedging ◽  
Hedging Portfolio ◽  
Necessary And Sufficient ◽  
First Time

Purpose This paper aims to study the conditions for the hedging portfolio of any contingent claim on bonds to have no bank account part. Design/methodology/approach Hedging and Malliavin calculus techniques recently developed under a stochastic string framework are applied. Findings A necessary and sufficient condition for the hedging portfolio to have no bank account part is found. This condition is applied to a barrier option, and an example of a contingent claim whose hedging portfolio has a bank account part different from zero is provided. Originality/value To the best of the authors’ knowledge, this is the first time that this issue has been addressed in the literature.

Understanding decoupling in response to corporate governance reform pressures

2015 ◽  
Vol 23 (4) ◽  
pp. 369-382 ◽  
Author(s):  
Mario Krenn
Keyword(s):  
Corporate Governance ◽  
Design Methodology ◽  
Good Governance ◽  
Regulatory Change ◽  
Compliance Monitoring ◽  
Governance Reform ◽  
Firm Level ◽  
Content Type ◽  
Good Corporate Governance ◽  
Actual Use

Purpose – The purpose of this article is to explain under what circumstances firm-level adoption of codes of good corporate governance will more likely be superficial rather than substantive in nature. The article contains lessons for any agency or country that attempts to implement deep and lasting changes in corporate governance via codes of good corporate governance. Design/methodology/approach – The article reviews the literature on compliance with codes of good corporate governance and develops a conceptual model to explain why some firms that have formally adopted a code of good governance decouple this policy from its actual use. Findings – Decoupling in response to the issuance of codes of good corporate governance will be more attractive to firms and also more sustainable under the following conditions: firms’ compliance costs are relatively high firms’ costs of outright and visible non-compliance are relatively high and outsiders’ compliance monitoring costs are relatively high. Originality/value – The article contributes to the debate on compliance and convergence and provides policymakers with a conceptual framework for assessing the likelihood of successful regulatory change in corporate governance.

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