Behavioral and Social Sciences Expert Witnesses in California

California

Behavioral and Social Sciences, Police Practices & Procedures - Discrimination, Disparate Impact, Disparate Treatment, Racial Bias, Racial Profiling, Police Benchmarking, Stop Disparities, Search Disparities, Force Disparities, Selective Enforcement, Fourth Amendment, Consent Decree, Pattern & Practice, Racial Justice Act & RIPA, Section 1983, Monell Claim, Econometrics, Statistics, Long Motion

Professional Overview Dr. Matthew B. Ross is a nationally recognized authority in the quantitative analysis of administrative policing data and its application in high-stakes civil rights litigation. As an Associate Professor of Public Policy & Economics at Northeastern University, Dr. Ross’s scholarship bridges the gap between high-level econometric research and practical legal application. He specializes in identifying and mitigating racial and ethnic disparities within the criminal justice system through the implementation of advanced statistical modeling and causal inference. Dr. Ross received his PhD in Economics from the University of Connecticut in 2016. Dr. Ross offers clients a rigorous, peer-reviewed econometric approach designed to withstand the most intensive Daubert and Frye challenges. His reputation is built on a dual ability to maintain scientific integrity while providing a communication style that translates complex statistical findings into a digestible, compelli...

Scotts Valley, California

Mental Health, Substance Abuse - Forensics, Homelessness, Chronic Mental Illness, Crisis Intervention, Dual Diagnosis, Substance Use Disorder, Psychosocial Assessments, LPS holds, Conservatorship, Coordinated Care, Jail Mental Health, Social Work, Treatment Planning, Multidisciplinary Teams, Hospital, Psychiatric Inpatient, Behavioral and Social Sciences

Licensed Clinical Social Worker (LCSW) – Forensic & Community Mental Health Specialist I am a Licensed Clinical Social Worker with 17 years of experience in behavioral health, homelessness, substance use, and forensic mental health, including 9 years of post-MSW clinical practice. My professional background spans high-acuity settings such as correctional facilities, psychiatric units, and community-based programs, where I’ve provided direct clinical services, crisis intervention, and care coordination for some of the most vulnerable populations. As a former Mental Health First Aid Instructor for Santa Cruz County Mental Health, I trained county agencies and community-based partners in identifying, understanding, and responding to signs of mental illness and substance use disorders. This role highlights my dedication to community education and building mental health literacy across systems of care. My expertise includes: Crisis intervention and de-escalation Psychiatric risk ass...

Los Angeles, California

Marketing, Behavioral and Social Sciences - Consumer Behavior, Marketing Strategy, Marketing Research, Marketing Management, Lanham Act, Confusion, Dilution, Secondary Meaning, Genericism, Right of Publicity, Celebritys, Statistician, Surveys, Creativity

From January 1, 2018 until I retired on June 30, 2020, I was Director of Online Programs and Visiting Full Professor of Marketing at the Peter F. Drucker Graduate School of Management at Claremont Graduate University. As of September 2021, I took an appointment as Adjunct Full Professor of Marketing at California State University Northridge (CSUN) teaching Undergraduate Marketing Research and Graduate Marketing Management where I remain on a part-time basis (as needed) today. Prior to my appointment at Drucker, I served as Director of Research, Full Professor and Area Head of Marketing with tenure at the Harriman School of Business at Stony Brook University-SUNY for eleven years. At Stony Brook, I exclusively taught courses in marketing at the graduate level, including Marketing Research, Marketing Management, and Marketing Strategy. Prior to my position at Stony Brook, I was an Associate Professor of Marketing, with tenure, at the Marshall School of Business Administration (Univer...

Los Angeles, California

Behavioral and Social Sciences, Psychology - coercive control, human trafficking, domestic violence, abuse dynamics, psychological coercion, undue influence, grooming, witness credibility, victim behavior, inconsistent statements, return to abuser, compliance under threat, exploitation, false confession, pressured statements, intimidation, fear-based compliance, manipulation

Dr. Felicia Rosario provides behavioral analysis in trafficking and abuse cases involving coercive control, psychological pressure, fear, dependency, and power imbalance. Attorneys retain her to explain how these dynamics shape disclosure, decision-making, communication, and testimony in legal settings. Her work clarifies behavior that courts and juries often misread—such as inconsistent statements, return to abusers, compliance under threat, and apparent passivity or emotional flatness—by situating it within coercive environments rather than individual pathology. She has been retained in criminal, family law, and domestic violence matters in state and federal proceedings. Dr. Rosario holds an MD from Columbia University College of Physicians and Surgeons and completed a psychiatry internship at LAC+USC Medical Center, one of the nation's busiest public psychiatric emergency systems. She is a member of Harvard Medical School's Program in Psychiatry and the Law (PIPATL), an interdis...

Newport Beach, California

Behavioral and Social Sciences - domestic violence, collective violence, homicide, gang violence, forensic interviewing, IPV, radicalization, terrorism, hate crimes, stalking, grievances, intimate partner violence, cycle of violence, coercive control, bias-motivated violence, child abuse

Dr. April Gould provides expert analysis, consultation, and testimony in criminal and civil cases involving domestic violence/intimate partner violence, hate crimes, gang violence, and homicide. She is a Criminology Expert at Park Dietz & Associates. She has been retained as an expert witness or consulting expert in more than 20 criminal and civil matters, involving homicides, domestic violence, gang violence, bias-motivated violence, and death penalty cases. Dr. Gould specializes in helping attorneys and juries understand the behavioral dynamics underlying violent crime. Her areas of expert opinion include the dynamics of domestic violence and coercive control, risk and lethality assessment in intimate partner violence, hate crime and terrorism motivation and radicalization pathways, gang violence, and child abuse and neglect. She has developed and presented continuing legal education programs for the National District Attorneys' Association on topics such as lethality risk asses...

Santa Monica, California

Social Work, Behavioral and Social Sciences - Social Work, Mental Health, Traumatic Brain Injury (TBI), Social Consequences of TBI, Psychosocial Damages, Personal Injury, Workers' Compensation, Employment & ADA, Criminal Defense, Standard of Care, Behavioral Health, Homelessness, Substance Use, Emotional Distress, Causation, Damages

Dr. Stephanie Chassman is a Ph.D.-level Licensed Clinical Social Worker (LCSW) and one of the few expert witnesses whose published research specifically focuses on the social consequences of Traumatic Brain Injury — including its effects on employment, housing stability, intimate relationships, social identity, and community functioning. With over 12 years of clinical and research experience and a three-manuscript doctoral dissertation on TBI and homelessness, Dr. Chassman bridges the gap that neurologists and neuropsychologists cannot fill: she explains not just what happened to a person's brain, but what happened to their life. Her peer-reviewed publications document how TBI disrupts social integration, substance use patterns, housing, and access to resources — exactly the downstream harms that drive damages in personal injury, workers' compensation, criminal defense, and employment matters. Dr. Chassman holds a Ph.D. in Social Work from the University of Denver and an MSW from ...