Instructor: Glenn Langenburg Course Description: In this course, we will apply the fundamental concepts highlighted in “Discriminating Power of Friction Ridge Arrangements”.  We will explore different examples of friction ridge patterns and arrangements, and demonstrate, using the power of a statistical model, which arrangements display a higher specificity than other arrangements.  We will see how various regions of the finger, different pattern types, different minutiae types, and clarity can all impact their discriminability.  Participants will have a chance to analyze latent prints and guesstimate specificity using their ‘training and experience’ factor (e.g. ‘subjective probability’). Then we will compare our predicted results to output results from a statistical model that uses an AFIS database (approximately 1 million fingerprints) to estimate the relative specificity for given configurations.  These are excellent practical exercises to calibrate your ability to assess specificity.  We also explore how these principles impact close non-matches and observe in a data-driven manner how close non-matches are designed to fool us from a specificity perspective. Length: 4 hours