Comprehensive Study Guide for Introduction to Forensic Psychology

The Broad Domain of Forensic Science

• The term forensic refers to scientific activities pertaining or potentially pertaining to law, including civil, criminal, and to a lesser extent, administrative law.

• Forensic scientists participate in the investigation of major crimes (not exclusively violent ones) and are often present at accident scenes.

• Services provided in civil suits may include addressing claims of water contamination or challenging the effects of prescribed medications.

• Consultation with administrative agencies might involve providing health departments with research relating to drug addiction.

• Forensic science has become an all-encompassing professional activity and a popular career choice, with nearly every profession having a forensic specialization.

• Forensic fields share a common association with the law and a foundation in research and scientific principles.

Diverse Forensic Specialties and Disciplines

• Forensic Engineering: Application of engineering principles to legal matters.

• Forensic Linguistics: In-depth evaluation of language-related characteristics of text, including grammar, syntax, spelling, vocabulary, and phraseology.

• Forensic Pharmacy: Deep knowledge of drugs and their interactions in a legal context.

• Forensic Oceanography: Study of ocean processes relevant to law.

• Forensic Medicine: Medical applications to legal questions.

• Forensic Digital Investigation: Recovery and analysis of digital evidence.

• Forensic Social Work: Application of social work principles to legal issues.

• Forensic Nursing: Special training, often in emergency departments, for collecting evidence pertinent to crimes such as sexual assault.

• Forensic Pathology: A branch of medicine concerned with diseases and disorders of the body relating to court questions; pathologists examine crime victim bodies for clues regarding their demise.

• Forensic Anthropology: Identification of skeletal, badly decomposed, or otherwise unidentified human remains.

• Forensic Archaeology: Application of archaeological methods to legal investigations.

Forensic Laboratories and Document Examination

• Publicly Funded Labs: In $2020$, there were $423$ publicly funded forensic crime labs in the United States at municipal, county, state, and federal levels.

• State-run labs received $60\%$ of all requests in $2020$.

• Private Laboratories: Some operate in university settings, providing services to agencies on a contractual basis or employing scientists for independent research.

• Questioned Document Examination: Also known as forensic document examination, this science analyzes handwriting, fonts, signature authenticity, document alterations, charred/water-damaged paper, inks, papers, photocopying processes, writing instruments, and sequence of writing.

• Specific tasks for a Forensic Document Examiner (FDE):

  • Establishing authorship and authenticity of checks, threatening letters, hold-up notes, credit applications, wills, investment records, tax forms, or medical records.

  • Rendering opinions on writing found on building walls.

  • Recovering engraved or obliterated writing from various surfaces.

  • Determining the brand or model of typewriters, keyboards, printers, embossers, and printing processes.

Digital Investigative Analysis (DIA)

• DIA involves the seizure, search, and analysis of electronic media from various operating systems while ensuring data is recovered without modification.

• Scope of examination: Desktop computers, laptops, mobile devices (cell phones, tablets), GPS navigation devices, vehicle computer systems, and Internet of Things (IoT) devices.

• Recovery Capabilities: Most "lost" data—including email, text, and voice messages—can be recovered despite deletion or physical damage to equipment.

• Example: Following the $2015$ San Bernardino terrorist attack, analysts recovered evidence of planned attacks from smashed equipment.

• Challenges: New technologies like Artificial Intelligence (AI), cloud platforms, superapps, and digital immune systems increase the difficulty of recovery.

• Mobile Devices: These contain vast amounts of data regarding communication, socializing, banking, shopping, navigation, vehicle starts, health tracking, and home surveillance; security features are increasingly challenging to decipher.

Defining Forensic Psychology

• Historical Tension: Scholars originally disagreed on whether the definition should be narrow (clinical practice only) or broad (including research and application across all psychological sub-disciplines).

• Broad Definition Consensus: Endorsed by the American Psychology–Law Society (AP-LS), the American Board of Forensic Psychology (ABFP), and the Specialty Guidelines for Forensic Psychology (APA, $2013c$).

• Formal Definition: Forensic psychology refers to professional practice by any psychologist working within any sub-discipline of psychology (e.g., clinical, developmental, social, cognitive) when applying the scientific, technical, or specialized knowledge of psychology to the law to assist in addressing legal, contractual, and administrative matters.

• Scope of Activities:

  • Investigations, studies, evaluations, and advice to attorneys.

  • Advisory opinions, depositions, and courtroom testimony to resolve disputes relating to life or property.

  • Child custody evaluations, screening law enforcement candidates, and clinical services in correctional facilities.

  • Criminology research, intervention design for youthful offenders, and counseling crime victims.

Subspecialties of Forensic Psychology

• Police and Public Safety Psychology: Application of psychological principles to law enforcement and public safety agencies.

• Legal Psychology: Scientific study of a wide assortment of topics reflecting the relationship between psychology and the courts.

• Psychology of Crime and Delinquency: Science of behavioral and mental processes of adult and juvenile offenders.

• Victimology and Victim Services: Study of harm experienced by crime victims and the provision of support services.

• Correctional Psychology: Psychological practice and research within adult and juvenile correctional systems.

Historical Benchmarks in Forensic Psychology

• $1893$: J. McKeen Cattell (Columbia University) conducts the first psychological experiment on the psychology of testimony regarding memory variation.

• $1903$: Louis William Stern (Germany) establishes a periodical on the psychology of testimony.

• $1906$: George Frederick Arnold publishes Psychology Applied to Legal Evidence.

• $1908$: Hugo Münsterberg (Harvard) publishes On the Witness Stand; often considered the father of forensic psychology.

• $1908$: Social science brief submitted to the Oregon Supreme Court in Muller v. Oregon.

• $1909$: Grace M. Fernald and William Healy establish a clinic for juvenile offenders.

• $1911$: J. Varendonck testifies in a criminal trial in Belgium.

• $1913$: Eleanor Rowland offers the first psychological services in a U.S. correctional facility (New York State women’s reformatory).

• $1917$: William Marston develops the first "polygraph."

• $1917$: Lewis Terman uses psychological tests to screen law enforcement personnel.

• $1918$: New Jersey establishes the first inmate classification system and hires full-time correctional psychologists.

• $1921$: State v. Driver—the first time an American psychologist testifies as an expert witness.

• $1922$: Karl Marbe is the first psychologist to testify at a civil trial (Germany).

• $1922$: William Marston receives the first faculty appointment in forensic psychology at American University.

• $1924$: Wisconsin mandates psychological exams for all prison admissions and parole applications.

• $1929$: Donald Slesinger becomes the first psychologist granted faculty status in an American law school (Yale).

• $1931$: Howard Burtt publishes Legal Psychology—the first forensic textbook by a psychologist.

• $1954$: Brown v. Board of Education—U.S. Supreme Court cites social science research, including work by Kenneth and Mamie Clark.

• $1961$: Hans Toch edits Legal and Criminal Psychology.

• $1962$: Jenkins v. United States—Psychologists recognized as experts on mental illness by the D.C. Court of Appeals.

• $1964$: Hans J. Eysenck publishes Crime and Personality.

• $1968$: Martin Reiser is hired as the first full-time police psychologist for the LAPD.

• $1968$: First PsyD program established at the University of Illinois.

• $1972$: Correctional psychology recognized as a professional career via the AACP.

• $1973$: First interdisciplinary psychology and law program established at the University of Nebraska–Lincoln.

• $1977$: Law and Human Behavior journal begins publication.

• $1978$: ABFP provides board certification; APA approves clinical internship in corrections in Wisconsin.

• $1985$: ABPP recognizes forensic psychology as a specialty.

• $1991$: Specialty Guidelines for Forensic Psychologists published by AAFP and AP-LS.

• $2001$: APA formally recognizes forensic psychology as a specialty; recertified in $2008$.

• $2010$: Guidelines for Child Custody Evaluations published.

• $2013$: Police and public safety psychology (PPSP) recognized as an APA specialty.

• $2022$: Revised Guidelines for Child Custody Evaluations published.

Telepsychology and Artificial Intelligence

• Telepsychology: Delivery of psychological services via telecommunications technology (virtual meetings, videoconferences, chats, social media).

• Rise in Use: Adoption accelerated significantly during the COVID-$19$ pandemic due to social isolation and facility closures.

• Artificial Intelligence (AI) in Practice:

  • Training psychologists for witness interviews.

  • Preparing court reports and automating administrative tasks.

  • Assisting in bail recommendations and sentencing suggestions.

  • Reviewing research on sexual offending and domestic violence.

• Potential Benefits: Enhanced data gathering and interdisciplinary collaboration.

• Potential Harms: Biases (racial and age discrimination), misuse by minors, and ethical concerns regarding human neuron emulation in generalized AI.

• Discussion Topics: Validation of concerns regarding AI-assisted cheating in academia and the impact of AI usage on student interest.

Roles and Comparisons: Psychology, Psychiatry, and Social Work

• Forensic Psychiatrists: Medical doctors (MDs or DOs) specializing in prevention, diagnosis, and treatment of mental disorders. They traditionally held exclusive prescription privileges and are often preferred by courts for insanity determinations due to the medical model approach.

• Forensic Psychologists: Hold a PhD or PsyD. Traditionally unable to prescribe medication, though this changed starting with New Mexico in $2002$. Other regions with prescriptive authority include Louisiana (Medical Psychologists), Illinois, Iowa, Idaho, Colorado, Utah, Guam, and the military/federal health services.

• Forensic Social Workers: Typically hold a Master’s degree in Social Work (MSW) with a forensic concentration; some have doctorates. They counsel victims, participate in custody evaluations, and contribute to treatment teams in correctional facilities. Usually recognized as experts in civil cases but often not in criminal cases.

Ethical Issues and Bias in Forensic Psychology

• Common Ethical Issues: Dual relationships, psychopathy assessment, telepsychology, conflicts of interest, bias, confidentiality, and the tension between punishment and rehabilitation.

• Highly Critical Issues: Participation in military interrogations, custody recommendations, death penalty risk assessments, and labeling juveniles as psychopathic.

• Deaf Community Interfacing: Special attention is needed to avoid misinterpreting Deaf individuals as hostile or paranoid. Lack of understanding of eye contact or personal disclosure rules in Deaf culture can hinder forensic evaluations.

• Mandates: Psychologists must follow the Ethical Principles of Psychologists and Code of Conduct (EPPCC) and the Specialty Guidelines for Forensic Psychology.

• Types of Bias:

  • Hindsight Bias.

  • Confirmation Bias.

  • Bias Blind Spot.

  • Moral Disengagement.

  • Adversarial Allegiance.

  • Cultural, Racial, and Gender Bias.

• Addressing Bias: Biases can influence the measurement of constructs like anxiety or malingering (e.g., eye contact avoidance in some cultures). Psychologists must be alert to explicit or implicit biases held by law enforcement, correctional officers, judges, and lawyers.

Academic and Professional Pathways

• Education Levels:

  • Bachelor’s Degree: Basic foundation; insufficient for professional practice.

  • Master’s Degree: Minimum requirement for some roles; may lead to licensure as a Psychological Associate (LPA).

  • Doctoral Degree (PhD or PsyD): Entry-level credential for independent practice in most states.

• PhD vs. PsyD:

  • PhD (Doctor of Philosophy): Research-based; requires a dissertation based on original research.

  • PsyD (Doctor of Psychology): Clinical focus; designed for practitioners.

• Joint Degrees: Some students earn both a PhD and a Juris Doctor (JD) or Master’s in Legal Studies (MLS).

• Training Components (Table $1.3$):

  • Substantive psychology.

  • Research design/methodology and statistics.

  • Conducting original research.

  • Legal knowledge.

  • Law-psychology knowledge (testimony, assessment, treatment).

  • Ethics and professional issues.

  • Clinical-forensic training in supervised practice.

Professional Organizations

• American Psychological Association (APA): Based in Washington, DC; approximately $157,000$ members in $2023$.

• Association for Psychological Science (APS): Nonprofit dedicated to scientific psychology; $33,000$ members in $2023$.

• Canadian Psychological Association (CPA): Approximately $7,000$ members in $2022$; utilizes the category "criminal justice psychology."

• British Psychological Society (BPS): Approximately $65,000$ members and subscribers in $2022$.

Subspecialty Focus: Police and Public Safety Psychology (PPSP)

• Four Major Areas of PPSP Involvement:

  • Assessment: Personnel screening, fitness-for-duty evaluations (FFDEs), and special unit evaluations.

  • Clinical Intervention: Counseling for post-shooting incidents, line-of-duty deaths, and undercover stress.

  • Operational Support: Hostage negotiations and criminal activity analyses.

  • Organizational Consulting: Addressing gender/minority issues, excessive force, corruption, and workplace stressors.

• Statistics: As of $2016$, $98.5\%$ of law enforcement agencies used psychologists for pre-employment suitability screening.

• Terminology: The broaden term public safety includes deputy sheriffs, airport security, immigration agents, marshals, and wildlife agents.

Subspecialty Focus: Legal Psychology and Family Forensics

• Legal Psychology Topics: Legal rights comprehension, insanity defense, civil commitment, jury selection, judicial decision-making, and pretrial publicity.

• Psychology of False Confessions: Research explores why innocent suspects may confess due to fear, coercion, or the internal belief that they are guilty after skillful police manipulation.

• Family Forensic Psychology Focus:

  • Adoption and child support.

  • Divorce, relocation, and visitation risk assessments.

  • Elder law, estate planning, and guardianship.

  • Paternity and reproductive/genetic technologies.

• Legal Context: Significant cases include Obergefell v. Hodges ($2015$) for marriage equality and the Dobbs decision ($2022$) overturning Roe v. Wade ($1973$).

Subspecialty Focus: Psychology of Crime, Delinquency, and Victimology

• Crime and Delinquency Research: Focuses on how antisocial behavior is acquired and maintained based on cognitive versions of the world, learning principles, and social rejection.

• Risk Factors for Chronic Violence: Poor school performance, peer conflict, abusive parenting, and school environments lacking discipline.

• Victimology: Study of persons experiencing harm from crime; survivors often advocate for social and legal changes.

• Impact: Victimization can disrupt child development and cause pervasive emotional/cognitive problems in adults.

• Service Data: In $2019$, providers delivered an average of $27$ different services, with two out of three victims receiving case management.

Subspecialty Focus: Correctional Psychology

• Population Statistics: At the end of $2021$, $5,444,900$ adults were under correctional supervision in the U.S. ($1$ in $48$ adults).

• Mental Health in Corrections: Over $70\%$ of jail/prison inmates have a diagnosed mental illness or substance disorder; approximately one-third have a serious mental disorder.

• Declining Juvenile Populations: Incarcerated juveniles in adult prisons/jails dropped from $10,420$ in $2008$ to $2,250$ in $2021$.

• Tasks: Assessment for rehabilitation, parole risk decision-making, sexually violent predator assessments, and evaluating the effects of crowding or isolation.

• Organizations: American Correctional Association (ACA) and International Association for Correctional and Forensic Psychology (IACFP).

Questions & Discussion

• What are the most salient strengths and weaknesses of AI as it relates to the work of forensic psychologists?

• Some college professors say ChatGPT encourages students to cheat, and some professors cite research that students are less interested in a topic if they use AI to gather information. Are these valid concerns?

• How can the use of ChatGPT be controlled in writing essays or term papers?

• Questions for Review:

  • Contrast forensic psychology with other forensic sciences.

  • Identify the five subspecialties of forensic psychology covered in this text and provide illustrations of the contributions of forensic psychologists in each one.

  • Explain the difference between the PhD and PsyD degrees.

  • Give examples of any four ethical issues that might be faced by psychologists practicing forensic psychology.

Forensic science involves scientific activities related to law, aiding in crime investigations and civil suits. It offers diverse specializations including engineering, linguistics, pharmacy, and medicine, all tied to law. With 423 public forensic labs in the U.S. in 2020, forensic document examination plays a key role in establishing authorship and authenticity of documents. Digital Investigative Analysis (DIA) examines electronic media for evidence recovery. Forensic psychology, defined broadly by the American Psychological Association (APA), covers various psychological sub-disciplines as they apply to the law. This field engages in civil matters, criminal evaluations, and child custody. It has historical benchmarks dating back to 1893, showcasing its evolution into a recognized profession. Ethical issues and biases are vital considerations in practice, affecting assessments and judicial outcomes. Academic pathways include bachelor's, master's, and doctoral degrees, emphasizing research and clinical training. Professional organizations like the APA support the field, which encompasses subspecialties focused on police psychology, legal psychology, crime psychology, and correctional psychology, among others.