Crime laboratory Essay Example

to the case? The U.S Supreme Court charge the judge of ensuring that the expert’s testimony was relevant to the case to the trial judge, because of the Federal Rules of Evidence rule 702.

5. What is the main difference between the testimony given by an expert witness and that given by a lay witness? The main difference between an expert witness and a lay witness is that an expert witness is someone who can establish to the satisfaction of the trail judge that he or she possesses a particular knowledge in a trade or profession that will aid the court in determining the truth of the matter at issue. While a lay or “ordinary” witness is simply someone who must testify to the events they observed during the time of questioning.

6. Describe the advantages of incorporating an evidence collection unit into the organizational structure of the crime laboratory. Some advantages are that the evidence techs are on call 24 hours for police agencies and crime labs to help collect evidence, rather than a detective or regular police officer. They also have the proper tools and supplies to collect and preserve evidence. Another advantage is that unlike detectives and police officers they regularly work closely with crime labs for maximum use of their skills.