P3 2

This three-day workshopis dedicated to the friction ridge skin of the palms. The palms display regional variation in the crease densities and ridge flows that can be exploited to determine the anatomical sub-region, left/right handedness, and distal orientation of partial impressions (e.g. latent prints).  Additionally, deltas and patterns on the palms have distributions within the population that inform the rarity of these macroscopic features during the ACE-V (Analysis, Comparison, Evaluation, and Verification) process.

How is this course different from other palm print classes? This course includes: practice on actual latent prints, establishment of uncertainties related to the assignment of search parameters (where and how to look), the use of the inconclusive decision, population data regarding the frequency of combinations of patterns and deltas, and strategies for performance testing trainees.

The cost for this course in the United States and Canada is $450 USD per student (the rate will be adjusted to accommodate taxes if applicable). For inquiries outside of the United States or Canada, please contact the instructor at Alice@EvolveForensics.com. Host agencies receive a 10% discount for all host agency registrations!

This course focuses on the analysis of latent prints to establish search parameters for the comparison process. Attendees will learn the following and apply their knowledge in practical exercises:

  • Embryological development of the hands with emphasis on the biological basis for shared macroscopic features (classifiable features) of the palms
  • Embryological development of the friction ridge skin with emphasis on biological basis for distinguishing microscopic features (identifiable features) of the palms
  • Pattern and delta distributions within the three sub-regions of the palms
  • Diagnostic ridge flows and crease densities within the three sub-regions of the palms
  • Expected reproducibility of the following friction ridge features on the palms: primary flexion creases, secondary creases, wrinkles, and ridges/furrows
  • Shapes of latent prints created by contact of the palms with flat surfaces
  • Establishment of search parameters (distal orientation, left/right, and sub-region) for latent palm prints using the most diagnostic information
  • Uncertainty and documentation of search parameters
  • Decision-making during the Evaluation phase of ACE-V with a focus on Inconclusive versus Exclusion decisions
  • Strategies for supervisors/trainers to test performance of trainees in palm print exercises

This course also summarizes original palm print data published by Alice White in the Encyclopedia of Forensic Science Please find the article on the Evolve Forensics website:  https://evolveforensics.com/publications/

Please bring loupes and ridge counters to perform the comparison exercises. Each attendee receives one notebook to take home with the lecture content and “unknowns” and a second notebook to use during class with the exemplar palm prints for comparison.