Heather Flowe

University of Birmingham · School of Psychology

Research about intoxicated witnesses and criminal suspects is surprisingly limited, considering the police believe that they are quite ubiquitous. In the present study, we assessed the involvement of intoxicated witnesses and suspects in the investigation of rape, robbery, and assault crimes by analyzing cases that were referred by the police to a...

We addressed the question of whether felony case dispositions are associated with eyewitness identification evidence. Toward this end, 725 felony cases (rape, robbery, and assault) were randomly sampled from the archives of a District Attorney's Office in a large south-western city in the United States. A positive identification was present more of...

Mock witnesses sometimes report using criminal stereotypes to identify a face from a lineup, a tendency known as criminal face bias. Faces are perceived as criminal-looking if they appear angry. We tested whether matching the emotional appearance of the fillers to an angry suspect can reduce criminal face bias. In Study 1, mock witnesses (n = 226)...

We examined the influence of alcohol on remembering an interactive hypothetical sexual assault scenario in the laboratory using a balanced placebo design. Female participants completed a memory test 24 hours and 4 months later. Participants reported less information (i.e., responded "don't know" more often to questions) if they were under the influ...

Accurate witness identification is a cornerstone of police inquiries and national security investigations. However, witnesses can make errors. We experimentally tested whether an interactive lineup, a recently introduced procedure that enables witnesses to dynamically view and explore faces from different angles, improves the rate at which witnesse...

Participation in, and attendance at, court often positions people amid a charged emotional environment, where the evidence frequently involves distressing accounts and the stakes of decision-making are high. Research has explored the impact of this environment on various court protagonists. What this research has failed to consider in detail, howev...

Introduction This study investigated the effects of face angle congruency across stages of a misinformation paradigm on lineup discrimination accuracy. Methods In a between-subjects design, participants viewed a mock crime with the perpetrator’s face from the front or profile angle. They then read a news report featuring an innocent suspect’s imag...

This study examined the effects of bystander or victim intoxication during a crime on juror perceptions and decision-making. Mock jurors (N = 261) read testimony from a bystander or victim to an assault, who mentioned that they had consumed alcohol, cannabis, amphetamines, or no substances prior to the crime. Participants delivered a verdict, rated...

Introduction Gender-based violence (GBV) is under-reported to the authorities owing to the stigma, shame, and fear of reprisal that surrounds these crimes. To address this, there has been an influx of technologies, including mobile phone and online applications that allow victim-survivors (hereafter, victims) to document and report GBV (hereafter r...

Globally, over 200 million women and girls have been subjected to Female Genital Mutilation (FGM). This practice, illegal in most countries, often happens in unsanitary conditions and without clinical supervision with consequent bleeding and infection. However, little is known about its contribution to the global epidemiology of child mortality. We...

In many societies around the world, alcohol and other drug use and abuse pose major health and safety problems. There is a clear link between alcohol consumption and lack of impulse control and an increased risk of violence, which leads to a high prevalence of intoxicated victims, witnesses, and suspects – especially in relation to violent crimes....

Sexual violence (SV) is a widespread public health and human rights problem, with countries in East Africa having higher rates than the global average. Prosecutions of SV in East Africa are rare, and survivors face many challenges accessing medico-legal justice and services. Developing initiatives that support survivors in navigating the criminal j...

Domestic abuse is a widespread problem that has far reaching and grave consequences. To date, very little systematic data have been gathered on the relationship between domestic abuse and victim suicide. To address this gap, we conducted three strands of research, including: 1) Rapid evidence review. The review examined the long- and short-term cau...

This study evaluated the impact and economic benefit of Cautioning and Relationship Abuse (CARA), an intervention which aims to reduce re-offending of first-time low-level domestic violence and abuse perpetrators. The analysis was based on two samples drawn from separate UK police force areas. CARA’s impact was assessed using a matched sample of si...

Objective To test whether acute alcohol intoxication and alcohol expectancy affects how accurately women remember consensual and non-consensual sexual activity that occurred during an interactive hypothetical dating scenario. Design A balanced placebo randomized study that varied alcohol dose (mean Breath Alcohol Content; BrAC = 0.06%) and alcohol...

Sexual and gender-based violence (SGBV) is a leading cause of physical, emotional, and psychosocial problems around the world, with many countries in East Africa having rates above the global average. Despite the high prevalence in the region, service provision for post-SGBV care is often poorly funded, difficult to access, or simply nonexistent. T...

The COVID-19 pandemic (and its aftermath) highlights a critical need to communicate health information effectively to the global public. Given that subtle differences in information framing can have meaningful effects on behavior, behavioral science research highlights a pressing question: Is it more effective to frame COVID-19 health messages in t...

The COVID-19 pandemic has increased negative emotions and decreased positive emotions globally. Left unchecked, these emotional changes might have a wide array of adverse impacts. To reduce negative emotions and increase positive emotions, we tested the effectiveness of reappraisal, an emotion-regulation strategy that modifies how one thinks about...

Gender-based violence (GBV) significantly and substantially threatens women's health. The COVID-19 pandemic has exacerbated existing risks and patterns of GBV. The impact of COVID-19 on GBV is not inevitable, however, and can be mediated by the policies of governments. In this study we developed the Government GBV Response Index to systematically e...

In many countries, data collection on sexual violence incidents is not integrated into the healthcare system, which makes it difficult to establish the nature of sexual offences in this country. This contributes to widespread societal denial about the realities of sexual violence cases and the collective oppression of survivors and their families....

The current paper seeks to solve theoretical and well-being ambiguities presented by the concept of valuing happiness by proposing that extant assessment represents a two-factor model situated within goal type theory. Exploratory and confirmatory factor analyses of the valuing happiness scale among UK and US student and adult samples confirmed stru...

Significance Communicating in ways that motivate engagement in social distancing remains a critical global public health priority during the COVID-19 pandemic. This study tested motivational qualities of messages about social distancing (those that promoted choice and agency vs. those that were forceful and shaming) in 25,718 people in 89 countries...

Police interviews gather detailed information from witnesses about the perpetrator that is crucial for solving crimes. Research has established that interviewing witnesses immediately after the crime maintains memory accuracy over time. However, in some contexts, such as in conflict settings and low-income countries, witness interviews occur after...

This project found that the CARA (Cautioning and Relationship Abuse) Service has a significant impact on recidivism. On average, the CARA Service reduced offences by 81% in the first six months and by 56% in the first 12 months for West Midlands. CARA reduced offences by 39% in the first six months and by 41% in the first 12 months for Hampshire. T...

The pursuit of justice increasingly relies on productive interactions between witnesses and investigators from diverse cultural backgrounds during investigative interviews. To date, the role of cultural context has largely been ignored by researchers in the field of investigative interviewing, despite repeated requests from practitioners and policy...

Background and objectives Maladaptive metacognitive beliefs are associated with the development of post-traumatic stress disorder (PTSD) symptoms following trauma, however it remains unclear whether training people to adopt healthy metacognitive beliefs helps to protect against the development of PTSD symptoms. We developed and tested a new cogniti...

Eyewitness identifications play a key role in the justice system, but eyewitnesses can make errors, often with profound consequences. We used findings from basic science and innovative technologies to develop and test whether a novel interactive lineup procedure, wherein witnesses can rotate and dynamically view the lineup faces from different angl...

Children are frequently witnesses of crime. In the witness literature and legal systems, children are often deemed to have unreliable memories. Yet, in the basic developmental literature, young children can monitor their memory. To address these contradictory conclusions, we reanalyzed the confidence-accuracy relationship in basic and applied resea...

Objectives This study examined patterns of sexual violence against adults and children in Kenya during the COVID-19 pandemic to inform sexual violence prevention, protection, and response efforts. Design A prospective cross-sectional research design was used with data collected from March to August 2020. Setting Kenya. Participants 317 adults, 2...

Over half of British Members of Parliament (MPs) were found to have overclaimed on their expenses in the 2009 expenses scandal. We conducted an exploratory analysis of whether the facial appearance of the MPs (N = 636) is associated with overclaiming, as research has found that facial appearance is correlated with behavioural outcomes. Participants...

In this chapter, we discuss the implications of the research presented in earlier chapters for interviews with complainants who were alcohol intoxicated during the crime. We set out evidence-based guidance about alcohol and memory in rape and other serious sexual offences to assist policy and decision makers. On the basis of mounting scientific evi...

This chapter examines the existing interviewing-guidelines from around the world pertaining to interviewing victims in sexual violence investigations. We note that there is a dearth of guidance that deals explicitly with the issue of interviewing complainants who were alcohol intoxicated at the time of the assault, let alone evidence-based guidance...

Victims of rape were often alcohol intoxicated during the attack. Complainant alcohol intoxication negatively impacts case processing at every stage of the legal system. There is no guidance around the world to inform investigators as to how to interview victims and witnesses who were acutely intoxicated when they witnessed the crime. This book rev...

This chapter reviews the literature in psychology on acute alcohol intoxication and memory. Special emphasis is placed on empirical studies that have systematically examined alcohol’s effects on memory performance in forensic contexts. Three aspects of memory performance are considered, including memory accuracy (i.e. the ability of the complainant...

Research into juror perceptions regarding the impact of intoxication on eyewitness memory and credibility is scarce for substances other than alcohol. However, jurors are frequently told to draw on their personal beliefs and experience with intoxicating substances to infer their impact on the case. It is therefore important to investigate laypeople...

The COVID-19 pandemic has increased negative emotions and decreased positive emotions globally. Left unchecked, these emotional changes might have a wide array of adverse impacts. To reduce negative emotions and increase positive emotions, we tested the effectiveness of reappraisal, an emotion-regulation strategy that modifies how one thinks about...

The COVID-19 pandemic has increased negative emotions and decreased positive emotions globally. Left unchecked, these emotional changes might have a wide array of adverse impacts. To reduce negative emotions and increase positive emotions, we tested the effectiveness of reappraisal, an emotion-regulation strategy that modifies how one thinks about...

We examined how encoding view influences the information that is stored in and retrieved from memory during an eyewitness identification task. Participants watched a mock crime and we varied the angle from which they viewed the perpetrator. In Experiment 1, participants (N = 2904) were tested with a static photo lineup; the viewing angle of the lin...

We comment on Kloft et al.’s (2021) review of the effects of alcohol and other drugs on false memory reporting. Across studies, problems of internal and external validity and methodological consistency preclude any blanket conclusions and recommendations regarding alcohol’s effects on false memory reporting and suggestibility in witnesses. We argue...

We comment on Kloft et al.’s (2021) review of the effects of alcohol and other drugs on false memory reporting. Across studies, problems of internal and external validity and methodological consistency preclude any blanket conclusions and recommendations regarding alcohol’s effects on false memory reporting and suggestibility in witnesses. We argue...

Unfamiliar simultaneous face matching is error prone. Reducing incorrect identification decisions will positively benefit forensic and security contexts. The absence of viewindependent information in static images likely contributes to the difficulty of unfamiliar face matching. We tested whether a novel interactive viewing procedure that provides...

Eyewitness identification plays a crucial role in criminal investigations, but errors can lead to wrongful convictions and missed opportunities to identify the guilty. This paper introduces interactive lineups, an innovative procedure allowing witnesses to actively engage with lineup members' faces. Drawing from basic face recognition research, we...

Background Sexual and gender-based violence (SGBV) is an epidemic that continues to affect both men and women in East Africa. Despite the high prevalence of SGBV in this region, sexual offense policies are often unclear, poorly enforced, or completely lacking. When policies do exist practitioners who assist survivors in the aftermath of the violati...

Gender inequality and sexual violence (SV) are rampant in Kenya. However, survivors infrequently report sexual violence to the police, and among those who do, their cases are unlikely to be thoroughly investigated, correctly documented and successfully prosecuted. This chapter discusses factors that have limited our progress in understanding more a...

Research documents a decline in risk-taking during peak fertility, which has been taken to suggest that fertile women may have inherent rape-avoidance adaptive mechanisms, particularly during the ovulatory phase. However, it cannot be known from previous research whether the decline in risk taking is specific to situations of increased risk of rape...

This article discusses the latest research that reveals that children seem to be facing new risks of sexual violence in Kenya during the COVID-19 pandemic. Patterns of sex offending against children coinciding with the implementation of lockdowns, curfews, and school closures may be shifting since the pandemic began. In particular, emerging evidenc...

This article discusses the latest research that reveals that children seem to be facing new risks of sexual violence in Kenya during the COVID-19 pandemic. Patterns of sex offending against children coinciding with the implementation of lockdowns, curfews, and school closures may be shifting since the pandemic began. In particular, emerging evidenc...

This article discusses the latest research that reveals that children seem to be facing new risks of sexual violence in Kenya during the COVID-19 pandemic. The evidence suggests there have been changes in patterns of sexual offenses against children coincident with lockdowns, curfews, and school closures. In particular, emerging evidence from Kenya...

Over the past 10 years, Oosterhof and Todorov’s valence–dominance model has emerged as the most prominent account of how people evaluate faces on social dimensions. In this model, two dimensions (valence and dominance) underpin social judgements of faces. Because this model has primarily been developed and tested in Western regions, it is unclear w...

This book examines how alcohol intoxication impacts upon the memory of rape victims and provides recommendations for how best to investigate and prosecute such rape complaints. An estimated 75% of victims are under the influence of alcohol during a sexual assault and yet there is surprisingly little guidance on conducting interviews with complainan...

We compare patterns of sexual violence against adults (n = 317) and children (n = 224) in Kenya during the COVID-19 pandemic in order to inform sexual violence prevention and protection efforts. The data we analyse were coded from interviews conducted by human rights defenders who were assisting survivors in obtaining vital services. We found that...

Research into juror perceptions regarding the impact of intoxication on eyewitness memory and credibility is scarce for substances other than alcohol. However, jurors are frequently told to draw on their personal beliefs and experience with intoxicating substances to infer their impact on the case. It is therefore important to investigate laypeople...

The public is increasingly exposed to news about eyewitness memory errors. This study draws from the strategic memory regulation framework [Goldsmith, M., Koriat, A., & Weinberg-Eliezer, A. (2002). Strategic regulation of grain size memory reporting. Journal of Experimental Psychology: General, 131(1), 73–95. https://doi.org/10.1037/0096-3445.131.1...

Fertile women may have inherent rape-avoidance mechanisms according to past research, with women differentially responding to a scenario implying rape compared to a control scenario when fertile (Petralia & Gallup, 2002). However, it is unclear whether these results mean that fertile women are responding to rape cues specifically, or physical dange...

Unfamiliar simultaneous face matching is error prone. Reducing incorrect identification decisions will positively benefit forensic and security contexts. The absence of view-independent information in static images likely contributes to the difficulty of unfamiliar face matching. We tested whether a novel interactive viewing procedure that provides...

Children, particularly girls, have heightened vulnerability to sexual violence committed by non-stranger perpetrators (e.g., neighbours) at private residences during the daytime, owing to school closures and a lack of alternative safe venues.Women have heightened vulnerability to sexual and physical violence at all times of day, with attacks by str...

This research report explores the impacts of the COVID-19 pandemic on patterns of sexual and gender-based violence (SGBV) in Kenya. The research entailed conducting interviews across the 47 counties of Kenya, including in informal settlements, to document sexual violence and other violations of adults and children during the COVID-19 pandemic. The...

This research report explores the impacts of the COVID-19 pandemic on patterns of sexual and gender-based violence (SGBV) in Kenya. The research entailed conducting interviews across the 47 counties of Kenya, including in informal settlements, to document sexual violence and other violations of adults and children during the COVID-19 pandemic. Ther...

Eyewitness identifications play a key role in the justice system, but eyewitnesses make errors, often with profound consequences. Errors are more likely when the witness is of a different race to the suspect, due to a phenomenon called the Own Race Bias (ORB). ORB is characterized as an encoding-based deficit, but has been predominantly tested usin...

Recently, the field of eyewitness identification has undergone a radical transformation, using signal-detection theory, models, and associated analyses to answer the important applied question of how police should test a witness’s memory of a criminal perpetrator. Here, we used these analytical techniques and the basic science of face memory to exa...

Implied precedence (i.e., the persons involved having had a prior sexual relationship) increases sexual coaxing and coercion (SCC). We examined whether General personality, the Dark Tetrad (Psychopathy, Narcissism, Machiavellianism, Sadism) and mating effort, influenced this association. HEXACO personality, Mating Effort (ME), Short Dark Triad (SD3...

General Audience Summary During a police investigation, an eyewitness may be presented with a lineup. If the suspect is identified, and if that suspect becomes the defendant in a court of law, judges and jurors should know the likelihood that an eyewitness identification of the defendant is accurate. One indicator of accuracy is confidence. That is...

Over the last ten years, Oosterhof and Todorov’s valence-dominance model has emerged as the most prominent account of how people evaluate faces on social dimensions. In this model, two dimensions (valence and dominance) underpin social judgments of faces. Because this model has primarily been developed and tested in Western regions, it is unclear w...

Children are frequently victims and witnesses of crime. In the witness identification literature, children are deemed to have unreliable memories. Yet, in developmental research, even young children display appropriate metacognitive cues that reflect their accuracy. To address these contradictory findings, we asked children in young- (4–6 years), m...

Sexual and gender based violence (SGBV) is notoriously difficult to investigate and prosecute. SGBV occurs in varied contexts and requires flexibility in the investigative approach in order to develop a strong evidence base to enable successful prosecutions. In this paper we focus on the need for innovation and development of training protocols for...

The present study sought to determine whether witness memory for duration could be improved. In three studies, we examined the effects of unpacking (breaking an event into its component parts), anchoring (supplying participants with a reference duration), and summation (summing component estimates). Participants watched a video-recorded mock crime...

How can lineups be designed to elicit the best achievable memory performance? One step toward that goal is to compare lineup procedures. In a recent comparison of US and UK lineup procedures, discriminability and reliability was better when memory was tested using the US procedure. However, because there are so many differences between the procedur...

How can lineups be designed to elicit the best achievable memory performance? One step toward that goal is to compare lineup procedures. In a recent comparison of US and UK lineup procedures, discriminability and reliability was better when memory was tested using the US procedure. However, because there are so many differences between the procedur...

We experimentally examined the effects of alcohol consumption and exposure to misleading post event information on memory for a hypothetical interactive rape scenario. We used a 2 beverage (alcohol versus tonic water) x 2 expectancy (told alcohol versus told tonic) factorial design. Participants (N = 80) were randomly assigned to conditions. They c...

There is widespread belief in the legal system that alcohol impairs witness testimony. Nevertheless, most laboratory studies examining the effects of alcohol on witness testimony suggest that alcohol may affect the number of correct but not incorrect details recalled. However, it is difficult to draw conclusions because sample sizes, testing paradi...