Introduction to Forensic Anthropology Comprehensive Study Guide

Definition and Scope of Forensic Anthropology

Forensic Anthropology is defined as the study of anthropology specifically dealing with the analysis of human skeletal remains to assist within the medical and legal fields.
Forensic anthropologists are often called upon to assist in the identification of remains that are considered normally ‐‐unidentifiable.‐‐
These cases generally involve an unexplained death.

Historical Foundations and Professional Recognition

Thomas Dwight: Recognized as the first to apply the principles of anatomy to forensic investigations. In $1878$ , he published ‐‐Identification of the Human Skeleton.‐‐ During his lifetime, he conducted extensive research into methods for determining the age, sex, and height of an individual from skeletal remains.
Professional Recognition: Forensic Anthropology was officially recognized by the American Academy of Forensic Sciences (AAFS) in $1972$ .
Certification: The American Board of Forensic Anthropology (ABFA) was established in $1977$ .

The Role of the Forensic Anthropologist

Their primary role is to assist the police and forensic pathologists in the analysis of suspicious deaths.
Search and Recovery: They utilize archaeological excavation techniques for the recovery of human remains.
Biological Profile: The ultimate task of the forensic anthropologist is to produce a comprehensive biological profile to identify the deceased.

Components of the Biological Profile and Identification

Anthropologists must determine the following specific factors: - Age - Sex - Ancestry - Stature - Trauma - Manner of Death - Post Mortem Interval (PMI)
The identification process also utilizes all available materials, including: - Dental Records - Medical Reports and X-Rays - DNA analysis

Formative Period Case Study: The George Parkman Death (1849)

Location and Context: Boston, early autumn of $1849$ .
The Incident: Dr. George Parkman, a high-status businessman who frequently lent money, went missing. One of his debtors was John Webster, a lecturer at Harvard Medical College. Webster was indebted to Parkman for an amount totaling over $10,000$ in today‐‐s currency.
Disappearance: Parkman was seen entering Webster‐‐s office but was never seen leaving.
Investigation: Janitor Littlefield suspected murder. Littlefield investigated by tunneling through the wall of Webster‐‐s private bathroom while his wife stood guard. Despite the stench of the privy, Littlefield found a human pelvis, a dismembered thigh, and a lower leg.
Retrieval: Littlefield alerted his wife and another trusted Harvard professor, who then notified the police and coroner. Men returned to the tunnel to retrieve the remaining body parts. Parkman‐‐s dentures were discovered in a furnace.
Analysis: Anatomy professors Wendell Holmes I and Jeffries Wyman from Harvard University were asked to investigate. They reassembled the body and determined the remains belonged to a white male, approximately $5\text{ foot } 10\text{ inches}$ tall, aged between $50$ and $60$ years at the time of death.
Legal Outcome: This $1850$ court case was the first to involve forensic anthropology, forensic odontology, and a forensic document analyst (who analyzed notes Webster claimed proved repayment). Webster was convicted of murder and hanged a year later in $1851$ .

Formative Period Case Study: The Leutgert Case (1897)

Context: Chicago, $1897$ . Adolph Leutgert, known as the ‐‐sausage-king‐‐ and owner of a factory, was accused of killing his second wife, Louisa.
Evidence: The body had been placed in a vat of potash in the factory and was almost entirely dissolved. However, four small bone fragments and Louisa‐‐s wedding ring remained.
Identification: Anthropologist George Dorsey proved that the fragments belonged to a human hand, foot, and rib.
Social Impact: The case had such a significant public impact that bratwurst consumption reached a record low.
Technical Detail: A sesamoid bone was positively identified as human and displayed in its life position; it was examined at actual size and magnified during investigations.

Historical Eras of Forensic Anthropology

Consolidation Period: - Two main events brought the field to the forefront: World War I and the Korean War. - World War I: The difficulty of identifying remains led the US Army to establish the Central Identification Laboratory in Hawaii (CILHI). - Korean War: Similar identification challenges led to the establishment of another identification laboratory in Japan. - Wilton Krogman: Known for his work with the FBI and his manual on skeletal identification, which was one of the first texts dedicated to skeletal-based identification. - T. Dale Stewart and Mildred Trotter: Responsible for identifications at CILHI post-WWI. Trotter‐‐s metrical methods of identification are still in use today.
Modern Period: - Began with the establishment of the Physical Anthropology section of the AAFS in $1972$ and the subsequent founding of the ABFA. - Ellis Kerley and Clyde Snow: Instrumental in establishing the Physical Anthropology section of the AAFS and the ABFA. - William Bass: Established the ‐‐Body Farm‐‐ at the University of Tennessee to assist in the identification of the Post Mortem Interval (PMI).

Related Forensic Fields

Forensic Archaeology: Focused on the location and recovery of human remains. Many consider this part of forensic anthropology because practitioners must be knowledgeable in archaeology.
Forensic Entomology: The study of insects on human remains to assist in determining the PMI.
Forensic Odontology: Use of dentition (teeth) by dentists to identify human remains.
Forensic Botany: The study of plant life in relation to a crime scene.
Forensic Pathology: Focuses on autopsies and determining the actual cause of death.

Data Collection and Analysis Methods

Methods to obtain data: Forensic anthropologists categorize collection through two primary lenses: morphological and metrical assessments.
Anthroposcopy: A visual assessment of the human body. This is the most common method of data collection.
Osteometry: A metrical (measurement-based) assessment of the human body.
Tools for Osteometry: Includes the osteometric board, sliding calipers, and spreading calipers. Measurements are recorded in $millimeters$ and $centimeters$ .
Statistical Analysis: Measurements are applied to regression equations or discriminant functions (statistical formulas based on collected population data). These allow for the determination of sex, stature, or ancestry.
Decision Making: All final identifications are based on charts, formulas, and statistical data. A final consensus is reached after recording multiple answers from various methods.

Professional Requirements and Ethics

Educational Background: Forensic anthropologists are anthropologists trained in all sub-fields (from religion to archaeology) with a particularly strong background in skeletal biology.
Ethical Pillars: Ethics are critical due to the sensitive nature of the work. The three main aspects are: - Respect - Confidentiality - Honesty

Current State and Future of the Field

Though historically viewed by some as an ‐‐illegitimate‐‐ field because it is applied rather than ‐‐pure‐‐ research, advancements have solidified its status as the official field for dealing with human remains.
Career Reality: Most forensic anthropologists hold other related careers; there is not a significant enough volume of work to practice forensic anthropology exclusively full-time.
Case Load Statistics (Cook County Morgue, Illinois, 2012-2022): - Over a $10\text{-year}$ period, only $132$ cases consulted a Forensic Anthropologist. - Of these, fewer than $100$ involved skeletonized or partially skeletonized remains. - This averages to approximately $13\text{ cases}$ per year. - Not all cases were forensically involved; many were archaeological. - During $2020$ , there were only $8\text{ cases}$ .