TY - JOUR PY - 2017// TI - On the likelihood of "encapsulating all uncertainty" JO - Science and justice A1 - Martire, Kristy A. A1 - Edmond, Gary A1 - Navarro, Daniel J. A1 - Newell, Ben R. SP - 76 EP - 79 VL - 57 IS - 1 N2 - The assignment of personal probabilities to form a forensic practitioner's likelihood ratio is a mental operation subject to all the frailties of human memory, perception and judgment. While we agree that beliefs expressed as coherent probabilities are neither 'right' nor 'wrong' we argue that debate over this fact obscures both the requirement for and consideration of the 'helpfulness' of practitioner's opinions. We also question the extent to which a likelihood ratio based on personal probabilities can realistically be expected to 'encapsulate all uncertainty'. Courts cannot rigorously assess a forensic practitioner's bare assertions of belief regarding evidential strength. At a minimum, information regarding the uncertainty both within and between the opinions of practitioners is required.

Copyright © 2016 The Chartered Society of Forensic Sciences. Published by Elsevier Ireland Ltd. All rights reserved.

Language: en

LA - en SN - 1355-0306 UR - http://dx.doi.org/10.1016/j.scijus.2016.10.004 ID - ref1 ER -