What effect do jurors often desire, referred to as the "CSI effect"?

The "CSI effect" refers to the phenomenon where jurors, influenced by crime television shows like "CSI: Crime Scene Investigation," develop an expectation for scientific evidence in legal cases. This creates a tendency for jurors to believe that forensic evidence is not just desirable but necessary for a conviction, often leading to higher demands for concrete scientific proof before reaching a verdict. This effect can impact trial outcomes, as jurors might discredit cases that lack such evidence, regardless of other compelling factors such as witness testimony or circumstantial evidence. Understanding this effect is essential for legal professionals, as it highlights the growing influence of popular media on juries' perceptions of justice and the efficacy of law enforcement.