scholarly journals Estimating the reliability of eyewitness identifications from police lineups

2015 ◽  
Vol 113 (2) ◽  
pp. 304-309 ◽  
Author(s):  
John T. Wixted ◽  
Laura Mickes ◽  
John C. Dunn ◽  
Steven E. Clark ◽  
William Wells
Keyword(s):  
Eyewitness Identification ◽  
Police Department ◽  
The United States ◽  
Law Enforcement Agencies ◽  
Eyewitness Confidence ◽  
Detection Model ◽  
Simultaneous Lineups ◽  
Simultaneous Procedure ◽  
Mock Crime ◽  
Eyewitness Identifications

Laboratory-based mock crime studies have often been interpreted to mean that (i) eyewitness confidence in an identification made from a lineup is a weak indicator of accuracy and (ii) sequential lineups are diagnostically superior to traditional simultaneous lineups. Largely as a result, juries are increasingly encouraged to disregard eyewitness confidence, and up to 30% of law enforcement agencies in the United States have adopted the sequential procedure. We conducted a field study of actual eyewitnesses who were assigned to simultaneous or sequential photo lineups in the Houston Police Department over a 1-y period. Identifications were made using a three-point confidence scale, and a signal detection model was used to analyze and interpret the results. Our findings suggest that (i) confidence in an eyewitness identification from a fair lineup is a highly reliable indicator of accuracy and (ii) if there is any difference in diagnostic accuracy between the two lineup formats, it likely favors the simultaneous procedure.

scholarly journals The Relationship Between Eyewitness Confidence and Identification Accuracy: A New Synthesis

2017 ◽  
Vol 18 (1) ◽  
pp. 10-65 ◽  
Author(s):  
John T. Wixted ◽  
Gary L. Wells
Keyword(s):  
Eyewitness Identification ◽  
Police Department ◽  
Field Studies ◽  
Information Value ◽  
Identification Accuracy ◽  
High Confidence ◽  
Testing Conditions ◽  
Eyewitness Confidence ◽  
New Synthesis ◽  
Mock Crime

Summary The U.S. legal system increasingly accepts the idea that the confidence expressed by an eyewitness who identified a suspect from a lineup provides little information as to the accuracy of that identification. There was a time when this pessimistic assessment was entirely reasonable because of the questionable eyewitness-identification procedures that police commonly employed. However, after more than 30 years of eyewitness-identification research, our understanding of how to properly conduct a lineup has evolved considerably, and the time seems ripe to ask how eyewitness confidence informs accuracy under more pristine testing conditions (e.g., initial, uncontaminated memory tests using fair lineups, with no lineup administrator influence, and with an immediate confidence statement). Under those conditions, mock-crime studies and police department field studies have consistently shown that, for adults, (a) confidence and accuracy are strongly related and (b) high-confidence suspect identifications are remarkably accurate. However, when certain non-pristine testing conditions prevail (e.g., when unfair lineups are used), the accuracy of even a high-confidence suspect ID is seriously compromised. Unfortunately, some jurisdictions have not yet made reforms that would create pristine testing conditions and, hence, our conclusions about the reliability of high-confidence identifications cannot yet be applied to those jurisdictions. However, understanding the information value of eyewitness confidence under pristine testing conditions can help the criminal justice system to simultaneously achieve both of its main objectives: to exonerate the innocent (by better appreciating that initial, low-confidence suspect identifications are error prone) and to convict the guilty (by better appreciating that initial, high-confidence suspect identifications are surprisingly accurate under proper testing conditions).

Screening the Police

2021 ◽  
Author(s):  
Noah Tsika
Keyword(s):  
United States ◽  
New York ◽  
Law Enforcement ◽  
Police Department ◽  
Film History ◽  
The United States ◽  
Law Enforcement Agencies ◽  
Local Law Enforcement ◽  
State And Local ◽  
American Police

American police departments have presided over the business of motion pictures since the end of the nineteenth century. Their influence is evident not only on the screen but also in the ways movies are made, promoted, and viewed in the United States. Screening the Police explores the history of film’s entwinement with law enforcement, showing the role that state power has played in the creation and expansion of a popular medium. For the New Jersey State Police in the 1930s, film offered a method of visualizing criminality and of circulating urgent information about escaped convicts. For the New York Police Department, the medium was a means of making the agency world famous as early as 1896. Beat cops became movie stars. Police chiefs made their own documentaries. And from Maine to California, state and local law enforcement agencies regularly fingerprinted filmgoers for decades, amassing enormous records as they infiltrated theaters both big and small. Understanding the scope of police power in the United States requires attention to an aspect of film history that has long been ignored. Screening the Police reveals the extent to which American cinema has overlapped with the politics and practices of law enforcement. Today, commercial filmmaking is heavily reliant on public policing—and vice versa. How such a working relationship was forged and sustained across the long twentieth century is the subject of this book.

scholarly journals JUDICIAL UNDERSTANDING OF THE RELIABILITY OF EYEWITNESS EVIDENCE: A TALE OF TWO CASES

2016 ◽  
Vol 19 ◽  
pp. 1
Author(s):  
Lirieka Meintjes
Keyword(s):  
South Africa ◽  
Supreme Court ◽  
Eyewitness Identification ◽  
Human Memory ◽  
The United States ◽  
Legal Standards ◽  
The Us ◽  
The Usa ◽  
Research Findings ◽  
Eyewitness Identifications

One of the most significant consequences of the use of post-conviction DNA testing in the criminal justice system has been the growing recognition that eyewitness identification testimony is simply not as reliable as it was previously considered to be. In approximately 75% of DNA exonerations in the United States, mistaken eyewitness identifications were the principal cause of wrongful convictions. Notwithstanding scientific advances regarding human memory and other factors that could influence identifications by eyewitnesses, courts have not shown eagerness in utilising such scientific knowledge in reaching legal decisions. Two cases have been chosen for discussion in this article. In S v Henderson 27 A 3d 872 (NJ 2011) the New Jersey Supreme Court was the first in State and Federal jurisdictions in the US that adopted a science-based approach to the evaluation of eyewitness evidence. The other case under discussion is S v Mdlongwa 2010 2 SACR 419 (SCA),a South African Supreme Court of Appeal judgment, where the identification of the perpetrator was based on an eyewitness account and the evidence of an expert on CCTV images. In part one of this article the research findings with regard to estimator variables that were acknowledged in S v Henderson are discussed. Part two specifically scrutinizes S v Mdlongwa to determine the extent to which psychological eyewitness research findings are recognised in South Africa as having an influence on the reliability of eyewitness evidence. In Henderson the court recognised that the legal standards governing the admissibility and use of identification evidence lagged far behind the findings of numerous studies in the social sciences. The new wave introduced by S v Henderson has not gone unnoticed in other State courts in the USA. In Massachusetts, for example, the Justices of the Supreme Judicial Court convened a study group on Eyewitness Evidence and the resulting report inter alia recommended judicial notice of modern psychological principles, revised jury eyewitness identification instructions and continuous education of both judges and lawyers. Recognition and education pertaining to these factors can and should be incorporated in South Africa.

scholarly journals Eyewitness Identification and Distinctive Features: When Similarity Matters

2020 ◽  
Author(s):  
Jamal K. Mansour ◽  
Jennifer L Beaudry
Keyword(s):  
Eyewitness Identification ◽  
Identification Accuracy ◽  
Correct Identification ◽  
Sequential Lineups ◽  
Distinctive Features ◽  
Simultaneous Lineups ◽  
Innocent Suspect ◽  
Mock Crime

In four experiments, we investigated theoretical and practical issues around eyewitness identification accuracy and confidence for tattooed suspects. We varied how tattoos were treated in lineups (Experiments 1 and 2) and the match between the suspect’s tattoo the perpetrator’s tattoo (Experiments 3 and 4). We replicated the finding that modifying lineup photographs to prevent a tattooed suspect from standing out mitigates the risk of innocent suspect identifications. We also demonstrated that sequential lineups (cf. simultaneous) do not mitigate the risk of biased lineups when the suspect stands out because of a tattoo. Contrary to previous research in which biased lineups did not impact correct identification rates differentially by lineup type, we found that biased lineups decreased correct identifications in sequential, but not simultaneous, lineups. Additionally, we found that the tattoo worn by an innocent suspect need not be identical to that of the perpetrator—similar placement and designs also inflate innocent suspect identifications, although a tattoo in a different location with a different design protected innocent suspects. Finally, our data indicate that when researching distinctive marks in lineups, researchers should request descriptions from the eyewitness-participants following the mock crime in order to determine whether the witness noticed the distinctive mark.

Interjurisdictional Law Enforcement Data Sharing Issues

2005 ◽  
pp. 25-44
Author(s):  
Mark R. Leipnik ◽  
Donald P. Albert
Keyword(s):  
Law Enforcement ◽  
Data Sharing ◽  
Police Department ◽  
The United States ◽  
Geospatial Data ◽  
Public Works ◽  
Comprehensive Planning ◽  
Law Enforcement Agencies ◽  
Technical Issues ◽  
Municipal Police

This chapter discusses the use of geographic information systems (GIS) to create and disseminate geospatial data among multiple law enforcement agencies in the same metropolitan area, county, region, state and nation. Cooperation between different agencies of government, such as between a municipal police department and a comprehensive-planning, information technology or public works department, with GIS expertise will be discussed. The benefits derived from sharing human and technical resources, from using a common set of geospatial data and a common crime records database schema, and from the centralization of activities, such as geocoding, will be emphasized. Issues impeding interjurisdictional use of GIS, such as technical issues of interoperability, confidentiality concerns and cost-sharing problems, are presented. Multiple examples drawn from the United States and several other countries illustrate the universality of interjurisdictional issues and the value of using GIS to facilitate data sharing and cooperation among multiple law enforcement and government agencies.

Racializing Crimmigration

2016 ◽  
Vol 3 (1) ◽  
pp. 82-95 ◽  
Author(s):  
Amada Armenta
Keyword(s):  
United States ◽  
Law Enforcement ◽  
The United States ◽  
Immigration Enforcement ◽  
Law Enforcement Agencies ◽  
Local Law Enforcement ◽  
Local Jail ◽  
Colorblind Ideology ◽  
Local Actors ◽  
Local Law

Deporting “criminal aliens” has become the highest priority in American immigration enforcement. Today, most deportations are achieved through the “crimmigration” system, a term that describes the convergence of the criminal justice and immigration enforcement systems. Emerging research argues that U.S. immigration enforcement is a “racial project” that subordinates and racializes Latino residents in the United States. This article examines the role of local law enforcement agencies in the racialization process by focusing on the techniques and logics that drive law enforcement practices across two agencies, I argue that local law enforcement agents racialize Latinos by punishing illegality through their daily, and sometimes mundane, practices. Investigatory traffic stops put Latinos at disproportionate risk of arrest and citation, and processing at the local jail subjects unauthorized immigrants to deportation. Although a variety of local actors sustain the deportation system, most do not see themselves as active participants in immigrant removal and they explain their behavior through a colorblind ideology. This colorblind ideology obscures and naturalizes how organizational practices and laws converge to systematically criminalize and punish Latinos in the United States.

Building Bridges Between Researchers and Police Practitioners in Small and Midsize Law Enforcement Agencies in the United States

2021 ◽  
pp. 104398622199988
Author(s):  
Janice Iwama ◽  
Jack McDevitt ◽  
Robert Bieniecki
Keyword(s):  
United States ◽  
Law Enforcement ◽  
The United States ◽  
Law Enforcement Agencies ◽  
Local Police ◽  
Police Agencies

Although partnerships between researchers and police practitioners have increased over the last few decades in some of the largest police agencies in the United States, very few small agencies have engaged in a partnership with a researcher. Of the 18,000 local police agencies in the United States, small agencies with less than 25 sworn officers make up about three quarters of all police agencies. To support future collaborations between researchers and smaller police agencies, like those in Douglas County, Kansas, this article identifies challenges that researchers can address and explores how these relationships can benefit small police agencies across the United States.

Challenging the Ordinality of Police Use-of-Force Policy

2021 ◽  
pp. 088740342110383
Author(s):  
Scott M. Mourtgos ◽  
Ian T. Adams ◽  
Samuel R. Baty
Keyword(s):  
United States ◽  
Use Of Force ◽  
Police Department ◽  
The United States ◽  
Physical Force ◽  
Police Use Of Force ◽  
Lethal Force ◽  
Police Agencies ◽  
Municipal Police ◽  
Force Data

Most use-of-force policies utilized by U.S. police agencies make fundamental ordinal assumptions about officers’ force responses to subject resistance. These policies consist of varying levels of force and resistance along an ordinally ranked continuum of severity. We empirically tested the ordinal assumptions that are ubiquitous to police use-of-force continua within the United States using 1 year’s use-of-force data from a municipal police department. Applying a quantitative technique known as categorical regression with optimal scaling, we found the assumptions of ordinality within the studied department’s use-of-force continuum (which is similar to many police use-of-force continua within the United States) are not met. Specifying physical force as a “lower” force option than less-lethal tools is associated with increased officer injury and decreased subject injury. Our findings call into question use-of-force continua featuring ordinal rankings for varying categories of less-lethal force.

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