Oxford mathematician Peter Donnelly reveals the common mistakes humans make in interpreting statistics -- and the devastating impact these errors can have on the outcome of criminal trials.

In the first example, the expert, Dr Jodie Witkowski, makes the statement that suggests uncertainty about her material. No eye contact to the judge. The second example, the expert clearly and carefully articulates her information in an...

In this first example, the expert, Dr Jodie Witkowski is flustered, causing the barrister to prompt her. The second example, the expert crisply delivers her statement with assurance, with occasional glances towards the judge/ jury.

In this scenario, the barrister is asking the expert about a sample taken from a corridor in a crime scene. The expert is being asked to explain the process of taking a control sample to verify that a positive reaction (indicating the...

A comparison between a question asked in an unclear manner by the lawyer, and a clearly asked question. In this scenario, the lawyer is attempting to undermine the expert witness’s credibility. The expert is being asked how frequently he...

This case study likewise involves the contrast between well-presented and poorly presented evidence. In this scenario, the expert is being asked to explain the likelihood of DNA being accidentally transferred onto a train platform. The...

This case study examines the error of acting outside one’s area of expertise. The expert is being asked to explain the process of ouchterlony, an immunological technique used to detect the presence of human haemoglobin. The expert is...

In this video, we explore the incredible world of forensic science and how DNA technology is helping to solve some of the most complex crimes. From the basics of how DNA works, to the cutting-edge techniques used to extract, analyze,...

DNA profiling is one of the world's most powerful forensic tools, but how was it developed and how does it work? Biology - Cells And DNA - Learning Points. DNA profiling helps us to link individuals to crimes and free those that are...

El genetista Alec Jeffreys de la Universidad de Leicester desarrolló una técnica llamada huella genética en 1985. Permite comparar muestras de ADN de diferentes personas para encontrar similitudes y diferencias. Es útil para resolver...

Dive into a hands-on forensic training session with four future detectives in Ecully near Lyon, exploring the precision of fingerprint analysis, DNA extraction, and the unique method of odorology. Discover how modern techniques rapidly...

CREDITS Animation & Design: Waldi Apollis Narration: Dale Bennett Script: Bethan Parry & Helen Stamp What is DNA fingerprinting or DNA profiling? Leicester University geneticist Alec Jeffreys developed a technique called DNA...