Key Takeaways:
- Expert testimony helps to clarify complicated evidence in an involuntary manslaughter suit.
- Crime scene analysts, toxicologists, forensic pathologists, and ballistics experts are all frequently used in cases involving manslaughter.
- In Canada, expert witnesses are qualified through a multi-step Mohan test and then assessed for admissibility by the judge.
- Signing on with a skillful criminal lawyer is essential when constructing a robust defence for involuntary manslaughter.
Table of Contents:
- What is Expert Testimony?
- What is the Importance of Witnesses in a Case?
- Types of Expert Witnesses Used in Involuntary Manslaughter Defence
- Examples of Expert Testimony
- How Expert Witness Testimony Strengthens an Involuntary Manslaughter Defence
- Who Determines Whether an Expert Witness is Used?
- Find a Criminal Lawyer in Toronto to Defend Your Manslaughter Case
Individuals who have been charged with involuntary manslaughter in Canada face monumental penalties. The legal consequences for this offence range from probation and fines to multi-year prison sentences. Defending clients against manslaughter charges often requires legal professionals to lean on expert testimony.
If you’re new to this concept, you might wonder:
- What is expert testimony?
- Why is testimonial evidence important?
- What is the role of a witness?
Learning the significance of professional statements can be eye-opening for the accused and their loved ones. Read on as we cover the basics of expert testimony, common expert witness types, and more.
What is Expert Testimony?
Expert testimony can be defined as a professional opinion that a qualified, unbiased expert delivers under oath during a deposition or trial. They transform complex topics and information into layman’s terms so they’re easier for the court or jury to understand.
What is the Importance of Witnesses in a Case?
Why are witnesses important? The answer is clear. Testimonial witnesses lend insight and understanding to a case’s issues, especially those that are technical, mechanical, or medical. To properly defend a case, it’s up to the defence to ensure that all legal arguments are supported. And evidence from experts can be instrumental in contributing to the establishment of facts and informed decisions.
Types of Expert Witnesses Used in Involuntary Manslaughter Defence
In the case of involuntary manslaughter, murder lawyers may call on various expert witnesses. The table below outlines the most common experts used in manslaughter defence cases:
| Expert Type | Details |
|---|---|
| Crime Scene Analysts | Professionals who examine crime scene information (fingerprints, DNA, etc.) and photo and video case evidence to figure out how a crime unfolded. |
| Forensic Pathologists | Fully trained doctors specializing in forensic medicine. They draw upon death investigation information from autopsies, tissue analysis, etc. Leveraging that information, they give an educated opinion on the circumstances surrounding a death. |
| Toxicologists | Experts who examine how certain medications, illicit drugs, and other potentially dangerous substances affect people’s health. In cases involving overdose or intoxication, a toxicologist’s expert statement may be used to decide whether a given substance caused or contributed to the victim’s death. |
| Ballistics Experts | Specialists who look at ballistics-related evidence (the flight and impact of projectiles from a gun or other weapon). From their findings, the court or jury can better understand how a violent incident progressed. |
Examples of Expert Testimony
Understanding expert testimony without having witnessed it can be difficult. Here are a few examples of expert witness testimony in involuntary manslaughter cases to help in that regard:
- Medical — An emergency room patient passes away after receiving an incorrect dose of medication from their doctor. A medical expert might explain to the court whether the doctor’s actions lined up with accepted medical practices. They may also state whether they believe the error was intentional or negligent.
- Technical — At a wedding, several people lose their lives after a balcony suddenly collapses. To yield insight into why this might have occurred, a structural engineer may review the case and present his opinion. Before testifying, they may consider the building code standards and details concerning how the structure was built or maintained.
- Mechanical — A driver loses control of their car and strikes and kills a pedestrian. A mechanical engineer could offer their specialized opinion focusing on issues like mechanical issues/defects, maintenance issues, and other crash contributors.
How Expert Witness Testimony Strengthens an Involuntary Manslaughter Defence
Leveraging expert testimony can fortify an involuntary manslaughter defence in several ways. First, it can be used to demystify the accused’s mindset at the time of the incident. This information may not be readily decipherable just by looking at the evidence. For example, a psychologist’s expert testimony may convince a jury that a defendant’s state of mind was compromised at the time of the accident. They may also state that the defendant shouldn’t be held liable as a result.
In addition to that, the right expert witness can help juries do their jobs better. Unless the jury has a full understanding of the defence, they won’t be able to fairly and thoroughly evaluate the case’s details. Addressing ambiguity or abstract concepts through an impartial witness is a great way to get the jury on the defence’s side.
Who Determines Whether an Expert Witness is Used?
The lawyer can propose that an expert witness be used in a certain capacity. But they don’t ultimately decide whether that person is allowed to testify.
An individual must be recognized by the court as an expert and proper notice must be given to the opposing party. They must also pass the Mohan test. Then, the judge will make the final decision on whether that witness will be used.
Find a Criminal Lawyer in Toronto to Defend Your Manslaughter Case
Hiring a dependable, qualified criminal lawyer in Newmarket, Scarborough, Brampton, Mississauga, or anywhere else in the GTA can help you win your involuntary manslaughter case. The legal experts at Vilkhov Law are well-versed in fighting exceedingly difficult involuntary manslaughter charges for Torontonians. They’ll craft a well-informed defence strategy and utilize expert witness testimony as necessary to counter challenging prosecution theories. Book a free consultation today to get started.
