NetherlandsForensicInstitute/evidential_value_of_expert_witness_statements

Code to compute evidential value of expert witness statements from several large scale studies

This repository provides code to compute LRs from forensic expert statements on prepared same-source and different-source samples.

Data are taken from the literature sources listed below. When these were given in non-downloadable form the numbers have been manually copied. Otherwise, urls of files are provided in the scripts - these should be included in a 'data' folder for the scripts to run. If your current setup allows the code will download the files for you, otherwise you will have to manually provide them.

Data

Bloodstains

Data are from

Hicklin et al (2021) FSI

https://doi.org/10.1016/j.forsciint.2021.110856 https://www.sciencedirect.com/science/article/pii/S0379073821001766

Data S3. Figure 4. responses to classifications

Footwear

From Hicklin et al (2022) FSI

https://www.sciencedirect.com/science/article/pii/S0379073822002481

Handwriting

From Hicklin et al (2022) PNAS

https://www.pnas.org/doi/10.1073/pnas.2119944119

Suppl dataset 02

Fingerprints

Data are manually copied from

Ulery et al (2011)

https://www.pnas.org/doi/full/10.1073/pnas.1018707108

table S5 in the SI Appendix

Firearms (Bullets and cartridges)

Data are from Scott Chumbley, L. et al. Accuracy, Repeatability, and Reproducibility of Firearm Comparisons Part 1: Accuracy. arXiv [stat.AP] (2021)

https://arxiv.org/ftp/arxiv/papers/2108/2108.04030.pdf

Table 2