Artificial Intelligence Ratings Of Facial Feature Similarity As Predictors Of Eyewitness Performance, Agata K. Bugajczyk

Student Theses

Eyewitness identification plays an important role in the criminal justice system, yet it is often prone to error. Diagnostic Feature Theory (DFD) suggests that lineup fillers should match the eyewitness’s description of the suspect but be different in other ways (Wixted & Mickes, 2014). According to this theory, people remember faces using multiple features (e.g., age, race, face shape), some of which are useful for recognition and some that are not. This approach has been shown to improve the ability to tell the difference between guilty and innocent suspects (e.g., Colloff et al., 2021), but it also increases identification rates …

Risk Assessment And Sentencing Bias: The Role Of Socioeconomic Status And Mental Health, Lily A. Walsh

Student Theses

The current research examined the impact of risk assessment information in the sentencing of defendants of varying socioeconomic statuses (SES), and mental health statuses. A US sample of students studying law (N = 137) was assigned to view one of eight vignettes that manipulated the defendants SES (i.e., low or high), mental health status (i.e., schizophrenia diagnosis or no diagnosis), and the availability of risk data (i.e., present or absent). Participants sentenced the defendant to probation, short-term jail, or prison, and indicated the sentence length in years. An Ordinal Logistic Regression and a Three-way Factorial ANOVA indicated neither the availability …

Investigating The Links Between Iq, Emotion Dysregulation, And Respiratory Sinus Arrhythmia In Childhood Antisocial Behavior, Isley Jean-Pierre

Student Theses

This study examined relationships among cognitive ability, emotion dysregulation, physiological regulation, and antisocial behavior. Participants were 340 children ages 7-10. Caregivers reported on emotion regulation, aggression, and delinquency, and children completed cognitive assessments. Intellectual profiles were classified as even or uneven. No significant differences in aggression or delinquency were found between intellectual profiles. Emotion Regulation Checklist scores mediated relationships between VIQ and both aggression and delinquency. Resting RSA mediated the relationship between VIQ and delinquency, although the indirect effect was small, whereas RSA reactivity did not mediate either outcome. Overall, findings suggest that emotion regulation may be a more consistent …

The Moderating Effect Of Facial Recognition Ability On The Post-Identification Feedback Effect, Benjamin Martell

Student Theses

Abstract

Researchers have long understood the contaminating impact that feedback given to an eyewitness regarding their lineup identification has on a host of testimony-relevant retrospective judgments (Steblay et al., 2014; Wells & Bradfield, 1998). This phenomenon-the Post Identification Feedback Effect- has been influential in informing policy that seeks to reduce the number of false identifications and subsequent miscarriages of justice (Dysart et al., 2012). The present study aims to further our understanding and application of the post-identification feedback effect by investigating how a factor specific to the eyewitness, facial recognition ability, may moderate this effect. The present study failed to …

Real Bullets, Plastic Guns: Evaluating The Strength Of 3-D Printed Gun Parts, Maria Latenia Mayol

Student Theses

Privately made firearms (PMFs), often referred to as “ghost guns,” are firearms manufactured or assembled by individuals rather than federally licensed manufacturers. Although the terms are frequently used interchangeably, “ghost gun” more specifically describes an unserialized firearm, whereas PMFs include a broader range of firearms produced through nontraditional manufacturing methods. PMFs may be entirely 3-D printed, assembled from partially completed firearm kits, or constructed by integrating additively manufactured components with commercially manufactured firearm parts. The increasing accessibility of additive manufacturing and widespread dissemination of computer-aided design files have raised concerns about concealment, regulation, and forensic evasion, particularly when factory-manufactured components …

Assessing The Impact Dynamics Of Less Lethal Ammunition, Steven Bermejo

Student Theses

Less-lethal ammunition is widely used by law enforcement as an alternative to lethal force during crowd control, on-street confrontations, and other situations requiring force. Although these projectiles are intended to reduce risk of fatal injury, serious injuries and fatalities have been reported, highlighting the need to better understand the factors that influence their impact behavior. This study evaluated the impact dynamics of four types of 12-gauge less-lethal ammunition, including rubber buckshot, single rubber ball, double rubber ball, and Byrna kinetic projectile, using kinetic energy calculations derived from projectile mass and velocity measurements. In addition, Attenuated Total Reflectance Fourier Transform Infrared …

Effect Of Food Resource, Preservation Method, And Preservation Duration On Larval Size Of Forensically Important Fly Species (Order: Diptera), John Zukowski

Student Theses

Forensic entomology is a vital discipline that can aid in the proceedings of criminal cases. Larval age and development are important aspects to consider when utilizing blow flies (Family: Calliphoridae) for estimates pertaining to the initial time of colonization (TOC), which contributes to postmortem interval (PMI) estimations. Thus, it is important to understand the factors that influence larval size and development, since larval size is commonly used as a proxy for age. Larvae of three species of flies, Lucilia sericata (Meigen), Calliphora vicina (Robineau-Desvoidy), and Phormia regina (Meigen), were reared on five different food resources. Specimens of L. sericata and …

The Three (3) Eras Of Compstat, Through Cultural Change. Lessons From The Past, Present And Future, Kevin Brown

Student Theses

Abstract

Using data and information from respondent surveys of current and former NYPD police executives, this study examines the cultural change, impact, and effectiveness of the NYPD’s CompStat system from the perspective of superior officers who have participated in it since its inception. CompStat was introduced in 1994 by NYPD, Police Commissioner, William Bratton.  Achieving cultural change in any police organization can be a monumental task, requiring CompStat’s transformational methods of data-driven accountability and four core principles that are aligned with organizational transformation evidence: timely intelligence, rapid deployment, effective tactics, and relentless follow-up.  This research explores how these principles have …

Investigating Potential Bias In Public Acceptance Of Restorative Justice: The Influence Of Situational And Offender Characteristics, Kiara Haynes

Student Theses

Restorative Justice has been an emerging justice mechanism in the U.S. since the 1970s that advocates are working to expand more widely throughout the justice system. Due to victims and the broader community of the offender being an integral part of the Restorative Justice process, it is critical to consider the general public's support of this novel justice mechanism, as well as the influence that social biases among the public may have on the experience of defendants going through the system. The study conducted examined the effect that social biases toward an offender's personal characteristics have on attitudes and opinions …

The Security Of Llm-Generated Code, Christopher Brian Gonzalez Ayala

Student Theses

The rapid adoption of Large Language Models (LLMs) in software development has transformed coding practices by enabling automated code generation, completion, and optimization. Despite these advantages, concerns persist regarding the security and reliability of LLM-generated code. This study presents a comprehensive evaluation of both the functional correctness and security of code produced by three prominent LLMs as of early 2026. A total of 4,800 code snippets were generated using 100 security-focused programming prompts derived from the OWASP Top 10:2025, translated across eight natural languages and two phrasing styles (literal and natural developer-oriented prompts). To assess performance, a multi-stage experimental framework …

Forensic Analysis Of Temporary Tattoo Markers And Inks, Daniel J. G. Chasse Jr

Student Theses

As tattoos rise in popularity, some marker manufacturers have created temporary tattoo markers so that children and adults can experience tattoos without the permanence of a regular tattoo. These new products are marketed explicitly as ‘temporary tattoo markers’ and intended for direct application to the skin. This research aims to scientifically evaluate the inks from these temporary tattoo markers to elucidate their physical and chemical properties using wet chemistry, visual examination, ultraviolet-visible spectroscopy (UV/Vis), Fourier-transform infrared spectroscopy (FT-IR), attenuated total reflectance infrared spectroscopy (ATR-IR), thin layer chromatography (TLC), and diffuse reflectance infrared spectroscopy (DRIFTS) to analyze temporary tattoo markers and …

Adversarial Robustness Of Perceptual Hashing Systems: A Unified Security Evaluation Framework, Avijit Roy

Student Theses

Social network platforms, child safety organizations, and image provenance systems use perceptual hashing to identify known child sexual abuse material (CSAM), support content moderation and reverse image search, and verify image integrity. Perceptual hashing works by producing similar fingerprints for visually similar images, even after common transformations such as compression, resizing, or minor brightness changes. This useful similarity-preserving property also creates an adversarial attack surface, as attackers can use AI-assisted or conventional image manipulation techniques to move a hash across a matching threshold while maintaining visual similarity, often without access to specialized hardware.

The security failures produced by adversarial attacks …

The Comparative Chemical Analysis Of Colored Henna, Vani D. Bhagwandeen

Student Theses

Henna, a natural dye derived from Lawsonia inermis, is widely used for temporary body art, hair coloring, and cultural decorative practices such as Mehendi. Traditional henna produces a reddish-brown stain through lawsone, a naphthoquinone chromophore that binds to keratin in skin, hair, and nails (Badoni Semwal et al., 2014; de Groot, 2013; Kumar Singh et al., 2015). Commercial henna products have increasingly incorporated synthetic dyes, pigments, and glitter additives to produce a broader range of colors and effects (Blair et al., 2004; Manso et al., 2017; Blackledge & Jones, 2007). Despite their prevalence, limited forensic research has examined the …

Investigating The Detection Ability Of Presumptive Bloodstain Testing Through Concealment Obstacles, Skye E. Lehr

Student Theses

Bloodstain detection can provide valuable information on the ability of presumptive tests. When perpetrators seek to alter the scene of violent crimes to interfere with investigations or flee from justice, crime scene investigation becomes more complex. In this analysis, scenarios where bloodstain evidence is attempted to be removed by household cleaners and covered up by acrylic or oil-based paint, are tested using luminol and Kastle-Meyer direct testing. These bloodstains have been altered by bleach, dish soap or all-purpose cleaner and covered under multiple layers of acrylic or oil-based paint. Evidence is documented both photographically and visually to simulate crime scene …

A Qualitative And Quantitative Comparative Analysis Of Ballistic Bone Trauma From Frangible And Full Metal Jacket Projectiles, Hajar S. Hassan

Student Theses

Ballistic bone research is essential as 90% of homicides with the use of a firearm include injuries to bone. Forensic anthropologists use ballistic bone trauma to gather details and reconstruct an event, but ballistic bone trauma depends on many intrinsic and extrinsic factors. These factors include the type of bone, the type of firearm, and the type of ammunition. As new ammunition and firearms emerge, the literature on ballistic bone trauma remains limited. This novel study compares the bone trauma from the most common projectile, the full metal jacket, to a frangible projectile which is made to break upon impact. …

Beyond "Bad Apples": Political Identity, Moral Interpretation, And Institutional Response To Abuse, Laura Werner

Student Theses

This thesis examines how psychological explanatory frameworks and structural institutional response interact to shape how domestic violence and sexual abuse are understood and addressed. Drawing on behavioral design theory and John Dewey's transactional approach to experience, I argue that harm is interpreted through mental models that simultaneously shape both individual perception and institutional action. Using survey data from 736 participants, I demonstrate that endorsement of the "bad apples" explanatory framework, attributing abuse primarily to a small group of deviant individuals, is predicted by psychological essentialism, belief in a just world, social dominance orientation, and political conservatism. These findings suggest that …

Exploring Biogeographical Ancestry Inference Of New York Residents Using A 45 Indel Panel, Amanda Martinez

Student Theses

Biogeographical ancestry (BGA) inference is an important tool in forensic science, providing supplemental information when comparison/reference DNA is not available for traditional DNA analyses. Insertion/deletion polymorphisms (INDELs) have been used in the last decade as ancestry-informative markers (AIMs) for BGA inference because they can be easily adapted to forensic-type samples and are determined using low cost and easy processing methods. Limited research has attempted to estimate ancestry and admixture in United States (U.S.) populations. This study evaluated the effectiveness of a 45- and 21- INDEL panel to measure population admixture proportions of four different origins (African, European, East Asian and …

Trauma, Memory, And Decision-Making: How Covid-19 Shaped Autobiographical Memories And Risky Decision-Making In Young Adults, Rachel Seo

Student Theses

Autobiographical memory is a critical component of the memory process that guides future behaviors by relying on past personal experiences connected to major public events. This decision-making process is heavily influenced by trauma exposure and post-traumatic stress disorder (PTSD) symptoms, as they may guide individuals to riskier behaviors. The COVID-19 pandemic represents a global traumatic stressor that contributed to shifts in behavioral outcomes post-pandemic. Despite research showing associations between memory accessibility, traumatic symptoms, and decision-making, there is limited research on health-related behaviors and post-pandemic behavioral outcomes in individuals with high trauma exposure specifically from the pandemic. The present study investigates …

Lineup Construction Strategies In The Presence Of Within-Person Variability, Abbey M. Greenfield

Student Theses

Photographic lineups are used more frequently than live lineups, but photographs are not always reliable representations of a person’s appearance. Oftentimes, images used in lineups are drawn from mug books, passports, and driver’s license photographs—which may be outdated. As a result, even when a culprit is correctly identified for inclusion in a lineup, the photograph used may differ significantly from their appearance during the event due to natural changes in appearance (Jenkins et al., 2011). Further, the degree of suspect-filler similarity sufficient to achieve optimal discriminability remains a topic of debate (Fitzgerald et al., 2013). We examined the impact differing …

Estimator And Reflector Variables In Eyewitness Recall, Sakshi Mundra

Student Theses

Eyewitnesses are frequently asked to describe culprits following a crime, but how accurate and complete are such descriptions? This study examined eyewitness description completeness and accuracy by investigating estimator variables (Race and Gender), reflector variables (Confidence and Response Time), and elicitation methods (Free Recall and Prompted Recall). Participants viewed one mock-crime video featuring a culprit who varied in race (White or Black) and gender (Female or Male), then provided free recall descriptions followed by prompted descriptions of facial features. Prompted recall improved completeness beyond free recall, though with a minor reduction in accuracy. Descriptions were more complete for same-race and …

Moderating Effects Of Defense Mechanisms On The Link Between Dark Triad Traits And Stress: A Replication With Addition Of Early Trauma, Ngayin Cheng

Student Theses

Literature suggested Dark Triad traits, comprised of narcissism, Machiavellianism, and psychopathy, are linked to adverse childhood environment and maladaptive coping that contribute to negative mental health outcomes, but Richardson and Boag's study (Richardson & Boag, 2016) was one of the few studies that first found Dark Triad traits are associated with immature defenses and higher perceived stress simultaneously. This replicated study aims to verify the original findings of their research by examining how defense mechanisms moderate the relationship between Dark Triad traits and perceived stress. A sample of 199 participants completed self-report measures assessing the Dark Triad traits, defense styles, …

A Meta-Analysis On Joinder Effects: Do They All Have The Same Magnitude?, Amelia M. Tisk

Student Theses

The present meta-analysis examined whether different forms of joinder and procedural consolidation produce varying levels of prejudice in adjudicative decision-making. Although joinder procedures improve judicial efficiency, psychological research has suggested that combining charges, defendants, or plaintiffs within a single proceeding may increase conviction likelihood, liability judgments, and broader perceptions of wrongdoing. A random-effects meta-analysis was conducted across 22 independent study effects examining charge joinder, defendant consolidation, plaintiff consolidation, multiple-complainant procedures, and related aggregation paradigms. Effect sizes were converted to Pearson’s r whenever possible. Overall, procedural aggregation produced a moderate effect on adjudicative outcomes, r = .27, 95% CI [.22, .32]. …

Chemical Variability In The Unregulated Opioid Supply In The South Bronx, Yeireline Rodriguez

Student Theses

The unregulated drug supply in the United States has become increasingly unpredictable, contributing to persistently high overdose mortality, particularly in structurally marginalized communities such as the South Bronx. While drug adulteration has long been present in illicit markets, the number and pharmacological diversity of adulterants remained limited for much of the twentieth century. Over the past decade, however, the drug supply has undergone a significant transformation marked by the proliferation of potent synthetic opioids such as fentanyl and its analogues, frequently combined with novel sedatives and chemically diverse adulterants. These shifts have introduced increasing chemical complexity into the street drug …

Adaptable Psychopathic Traits: Military And Para-Military Organizations, Mariana Ramirez

Student Theses

Although culturally distinct, both military and law enforcement careers demand individuals to operate effectively in high-risk environments; a characteristic shaped through processes of military and para-military occupational socialization, reinforced by an adaptable personality. Understanding the distinctions between military and law enforcement cultures provides a foundation for examining individual-level factors such as personality, behavior, and mental health. Recent research (e.g. Anestis et al., 2019; Batastini et al., 2023; Falkenbach et al., 2017; Falkenbach et al., 2018; McKinley & Verona, 2023; Patton et al., 2018; Preston et al., 2020; Roșca et al., 2021) has increasingly applied a psychopathic framework to study these …

Method Development And Optimization For The Detection Of Synthetic Cannabinoids In Hair Using Lc-Msms, Linda K. Obeng

Student Theses

Synthetic cannabinoids represent one of the most prevalent and high-risk classes of New Psychoactive Substances (NPS), continuously evolving in structure and potency. Their widespread presence in seized materials and toxicology casework underscores the growing need for reliable analytical methods capable of detecting these compounds in biological matrices. Hair offers several advantages for drug testing, including a long detection window, minimal invasiveness, and resistance to adulteration; however, detecting synthetic cannabinoids in hair remains challenging due to their low incorporation levels and structural diversity. This study focuses on the method development and optimization of an LC-MS/MS technique for the detection of selected …

Fast & Forensic: Rapid Detection & Quantitation Of 30 + Emerging Novel Psychoactive Substances In Hair Using Lc-Ms/Ms, Seokjin Hwang

Student Theses

The continuous emergence of novel psychoactive substances (NPS) poses a significant challenge for forensic and clinical toxicologists, due to their structural diversity, rapid turnover on the illicit drug market, and limited toxicological information. Hair is a powerful matrix for retrospective drug exposure assessment and monitoring NPS worldwide. Not only does it provide a broad window of detection but also a simple sample exchange amongst laboratories. However, the extraction of multi-class NPS in a single method remains an analytical challenge. Therefore, there is an urgent need for extraction techniques and analytical methods that are both rapid and capable of multi-class quantitation …

Understanding Mental Health Crisis Response Through The Lens Of First Responders, Ella Gibson

Student Theses

Responses to mental health crises are becoming an increasingly contentious topic as cases of extreme police violence or fatality during a crisis are publicized in the media. Although first responders’ experiences with mental health crisis response have been explored in prior literature, there remains a lack of research that gathers data from multiple first responder roles and compares their experiences across groups. There is also a significant gap in research examining the perspectives of co-response teams. This study sought to gather qualitative data on the experiences of police officers, EMTs/paramedics, and co-response team members, and to explore their perceptions of …

Eyewitness Consent To Be Video Recorded: Implications For Identification Accuracy And Confidence, Sarah Argüelles

Student Theses

Recently, a recommendation has emerged for law enforcement to record the full eyewitness identification procedure, recognizing the critical role eyewitness testimony plays in the justice system (Wells et al., 2020). However, in some states, such as New York, law enforcement is required to seek consent from witnesses before recording (Municipal Police Training Council & Division of Criminal Justice Services, 2017). Since this practice is relatively new, there has been limited research on how obtaining consent may affect eyewitness accuracy. It was hypothesized that obtaining consent to video record could be linked to a witness’s confidence in their identification, with higher …

Rape Myth Acceptance, Pretrial Publicity, And Decision-Making: An Examination Of Perceptions Of Victim Credibility And Perpetrator Guilt In A Real-World Sexual Assault Case, Lindsey Strouse

Student Theses

This study explores how the media narratives and political perspective of pretrial publicity (PTP) can influence jurors’ perceptions in sexual assault cases, raising significant concerns about justice in courtrooms. Specifically, it examines whether media framing of a real-life sexual assault case — through varying media narratives, with media that either challenges or endorses rape myths, and media source (liberal vs. conservative) — affects mock jurors’ rape myth acceptance (RMA), views of victim credibility, and judgements of perpetrator guilt. Participants first completed a RMA scale, then read mock news articles varying in media narrative and political affiliations (media source), followed by …

Cross-Cultural Validity Of The Ppi-R In U.S. College Students, Cassidy Liang

Student Theses

Psychopathy has traditionally been studied using Hare's Psychopathy Checklist-Revised (PCL-R) but self-report measures like the Psychopathic Personality Inventory-Revised (PPI-R) have gained popularity due to comparative ease, speed of administration, and its broader applicability to the general population. However, the validity of the PPI-R across cultures has produced mixed results, particularly in non-Western and non-English speaking participants. This study examined racial/ethnic and gender differences in the PPI-R in a diverse sample of 536 college students. The internal and external validity of the PPI-R was good. The PPI-R correlated with the Triarchic Psychopathy Measure (TriPM), as well as trait anxiety, and empathy …