Comprehensive Introduction to Forensic Science and Sub-Disciplines

Definition and Scope of Forensic Science

  • Forensic science represents the application of scientific or technical practices to the recognition, collection, analysis, and interpretation of evidence for several legal areas, including:

    • Criminal law.
    • Civil law.
    • Regulatory issues.
  • A distinction is drawn between scientific practices and technical practices. Throughout training, it is essential to understand that not every practice utilized in forensic science is rooted in the scientific method.

  • Historically, certain practices have been identified as lacking because they were not sufficiently rigorous and were not built upon the scientific method.

Etymology and Legal Purpose

  • The word forensic originates from the word fora.

  • Fora translates to "before the people" or "before the court" and is associated with being "subjected to a quorum."

  • The ultimate objective of forensic work is to place findings into a legal context. Examples of this work include:

    • Making an identification, such as a DNA analyst identifying a victim.
    • Excluding a specific suspect as the source of biological evidence, such as skin found underneath the fingernails of a victim.
  • Forensic science must be presented in a way that is understandable and explainable to a broad audience, regardless of their background.

Historical Origins and Multidisciplinary Nature

  • The foundations of forensic science, particularly from a Western-based perspective, were initially established by the Greeks and Romans.

  • Forensic science is inherently multidisciplinary because it applies to diverse contexts including law enforcement cases, criminal cases, civil matters, and various legal issues.

Branches and Organizations of Forensic Science

  • The American Academy of Forensic Sciences (AAFS) serves as the primary overarching organization for the field within the United States.

  • The sub-disciplines of forensic science are diverse and include, but are not limited to, the following:

    • Forensic Biology: Practiced at institutions like Western.
    • Forensic Chemistry: Practiced at institutions like Western.
    • Forensic Anthropology: Practiced at institutions like Western.
    • Forensic Psychology: Notably not available at all institutions, such as Western.
    • Criminalistics: A broad category covering various evidence types.
    • Pathology: Associated with the work of medical examiners.
    • Odontology: The application of dentistry to legal matters.
    • Toxicology: The study of drugs and poisons.
    • Wildlife Forensics: Specialized investigation of crimes involving animals and nature.
    • Forensic Accounting: Financial investigations for legal purposes.
    • Food Forensics: Includes specialized determinations, such as "wine and crap kind" determinations.

Specialized Domains and Death Investigation

  • Forensic pathology involves the determination of how a disease or an injury specifically led to the death of an individual.

  • In the United States, there are five banners of death utilized by medical examiners and investigators. These include:

    • Natural.
    • [Further banners follow in the classification system.]