The CSI effect is a phenomenon that describes the influence of crime television shows, such as CSI: Crime Scene Investigation, on public perception of forensic science and its use in criminal trials. The term "CSI effect" was coined in reference to the alleged phenomenon of CSI raising crime victims and jury members real-world expectations of forensic science, especially crime scene investigation and DNA testing. The exaggerated portrayal of forensic science on these shows can lead to unrealistic expectations of forensic evidence in criminal cases, with jurors placing a heavy emphasis on forensic science and believing that forensic evidence is 100% accurate and should be produced in every criminal case. Prosecutors have claimed that jurors may be reluctant to vote to convict if the police were unable to recover any forensic evidence from the crime scene. However, some studies have shown that the CSI effect has no significant influence in criminal trials, despite the various actors in the criminal justice system operating as if this effect needs to be overcome. Although the CSI effect is a controversial topic, it has changed the way many trials are presented today, with prosecutors pressured to deliver more forensic evidence in court.