Propensity evidence, as defined under section 40 of the Evidence Act 2006, is evidence that show a person’s tendency to act in a particular way. It is not evidence of an act that is not an element of the offence or cause of action.
So, what exactly are we talking about? Imagine someone accused of fraud. If they have a documented history of similar fraudulent activities, that past conduct might be introduced as propensity evidence at their trial. The idea isn’t to say, “They did it before, so they must have done it again!” That would be unfair. Instead, it suggests that the current allegations align with a demonstrable pattern of behavior – the defendant’s modus operandi.
Why is it so tricky to use?
The reason courts approach propensity evidence with such caution is because of its highly prejudicial nature. There’s a real risk that a jury or judge could be swayed by a defendant’s past, rather than focusing solely on the evidence presented for the current case. Nobody wants to be judged purely on their reputation or old mistakes.
That’s why strict admissibility tests are in place under the Evidence Act 2008. Courts usually consider propensity evidence only when it has significant probative value. This means it needs to be genuinely relevant and helpful in proving a key fact, like a person’s motive, or to counter a claim of accident. For example, if a defendant argues an incident was purely accidental, evidence of them having caused a string of similar “accidents” could be admitted, challenging their defence. It’s also often used to demonstrate a peculiar modus operandi, which is a distinct way of operating that links someone to the alleged actions.
Balancing probative value and prejudice
Judges play a crucial role in the admission of propensity evidence as they are constantly balancing the probative value of the evidence against its potential for unfair prejudice. The greater the risk of unfairly swaying opinion based on past bad character, the more compelling and relevant that propensity evidence must be. This often means the past incidents need to share striking similarities or unusual features with the current allegations, going far beyond just general bad character.
Think of it as ensuring the evidence serves a legitimate purpose. It should genuinely help the court understand the facts rather than simply painting the defendant in a negative light. Safeguards are always in place to maintain this fairness.
Summary
Propensity evidence is a powerful yet controversial tool within our legal system. It offers valuable context by revealing established tendencies, but its application is meticulously scrutinised to guard against unfair bias.
Our courts should continuously strive to balance the need for a comprehensive picture of the facts with every defendant’s fundamental right to be judged solely on the merits of their current case.
The first step in getting support is to talk with a lawyer from Frontline Law about your situation and see what options we can offer you. Contact Frontline Law for a free initial consultation.
*The information in this blog post is general in nature and is not legal advice. If you need advice, you should contact us about your specific situation.
