Ethics in Forensic Science

The Pillars of Forensic Scientists

Forensic scientists must be honest, ethical, detail-oriented, collaborative, and objective, serving as teachers and speaking for the evidence.

Ethics

Integrity, defined as moral uprightness, is crucial. Forensic scientists are not required to be 100% perfect or correct, and a difference of opinion is not unethical. QA/QC, accreditations, and SOPs ensure quality. Ethics in forensic science draw from criminal justice, business, and general science standards. There is no single universal code of ethics.

Violation Spectrum and Basic Definitions

Violations range from criminal to personal ethical breaches. Ethics involve rules of conduct for specific groups (e.g., medical, forensic science) guiding the application of science to criminal investigations. Key components include written rules, defining violations, and specifying consequences.

Different Ethical Standards

Standards include:

  • Legal Standard: Laws and regulations.

  • Ethical Standard: High standards of honesty and honorable conduct.

  • Professional Requirement: Moral standards.

  • Personal Choice: Generally accepted customs.
    These are often defined by professional organizations and agencies like NIST, SWGDAM, and the FBI.

Common Ethical Issues

Common issues include misrepresenting qualifications, pressured testimony (adrenaline factor), omitting unfavorable information, falsifying data, negligence, and biased examination. Bias is prejudice for or against something, often unfairly, while the Adrenaline Factor refers to emotional pressure during cross-examination leading to defending beyond one's capacity.

Bullying and Agency-Level Ethical Issues

An example involved a Boston ADA allegedly pressuring a forensic pathologist in a child abuse case. Agency-level ethical issues include discrepancies in guidelines, unclear violation determinations, lack of training, and the need for a disciplinary Forensic Ethics Board.

Ethical Standards (Key Points)

Core ethical standards involve accurate representation of qualifications, maintaining evidence integrity, true/accurate data, clear documentation, impartiality in examination and testimony, confidentiality, disclosure, and reporting colleagues' violations. Scientists are human and can be influenced by prestige and resources, as noted by J.C. Upshaw Downs, MD.

In Short

Scientific facts exist, but interpretations can vary, and ego/experience can affect outcomes. Most forensic scientists are ethical, but a few fraudulent individuals can taint cases and public trust.

Simulated Ethical Scenarios

Discussions on ethical issues in various cases, distinguishing unethical practices, and identifying gray areas.

Potential Solutions

Solutions include understanding discrepancies across communities, disciplines, and agencies; providing proactive training for new and current scientists; and open discussions of real and simulated case situations.

Policy Recommendations

CASE STUDY #1: Bullet Lead Analysis

  • FBI's Lead Analysis: Used from 1963 to link crime scene bullets to suspects based on a theory of unique elemental makeup in each batch.

  • The 2004 NAS report found the science unreliable, and narratives in testimony often overstated links. The FBI abandoned the analysis a year later but did not reassess past misstatements.

  • Brought to Light: Documents showed FBI concerns from 1991, brought to light by former FBI metallurgist William Tobin. Post-NAS, the FBI notified legal parties, leading to over 250 reviewed cases and 12 reversals/questions of innocence.

  • Was the Science Wrong?: The FBI measured elements correctly, but problems arose from faulty statistical calculations declaring matches and overstating the significance of those matches. A 1991 FBI study showed accurate matches under specific conditions, but findings of differing lead compositions within a single box undercut the batch-uniqueness theory.

CASE STUDY #2: Microscopic Hair Comparison Analysis

  • FBI Hair Analysis History: Prior to 2000 (when mDNA became routine), flawed testimony by examiners often overstated matches, favoring prosecution (Prosecutorial Bias). Re-examinations showed 90-95% of cases had examiners overstating findings.

  • How Did This Come to Light?: A 2012 federal investigation, triggered by a Washington Post report, revealed widespread systematic error.

  • Hair Reinvestigation Findings: FBI admitted to exaggeration under oath due to lack of national standards, insufficient research, and cognitive biases:

    • Confirmation Bias: Focusing on evidence supporting a theory while ignoring contradictory evidence.

    • Outcome Bias: Preferring decisions leading to favorable outcomes.

  • Outcomes of Flawed Testimony (500 cases): Of 268 cases using hair analysis, 96% had erroneous statements. This impacted 33/35 death penalty cases, with 9 executed and 5 dying on death row. The Innocence Project overturned 74 wrongful convictions by DNA, where other evidence may have contributed.

  • Next Steps Proposed by DOJ-FBI-Innocence Project: Independent investigation of FBI protocols, review processes, and encouraging states to conduct independent reviews.

  • FBI – Next Steps?: Offers free DNA testing with court orders or prosecution requests, and the DOJ will not object to new trial petitions due to faulty evidence.

CASE STUDY #3: Bombing of Madrid Train Systems (Brandon Mayfield Case)

  • The Analysis: Fingerprints from a bomb bag were shared with the FBI, who identified Brandon Mayfield using AFIS. Mayfield was arrested despite Spanish police indicating no match.

  • What Went Wrong: Investigators' biases and circular reasoning influenced conclusions, identifying 10 points of unusual similarity driven by confirmation bias. Mayfield's Muslim faith and past associations also contributed to him being branded a suspect.

  • Outcome: Mayfield was released and awarded $$2 million after suing the U.S. Government.

Final Reflections

As Martin Luther King, Jr. stated: “The ultimate measure of a man is not where he stands in moments of comfort and convenience, but where he stands at times of challenge and controversy.”