The California Courts of Appeal 6th Appellate District recently ruled that a trial’s court refusal to allow any expert testimony as to a defendant’s actual mental state at the time of the offense is prejudicial abuse of discretion. Leopoldo Alejandro Cortes was convicted of 1st degree murder. At trial, the defense attempted to have an expert testify to what the defendant’s mental state was at the time of the offense. The judge denied this during evidentiary ruling. The defendant appealed.
The appeals court ruled that the denial of this testimony was abuse of discretion and prejudicial. They limited this ruling to cases where the defendant’s mental state is an element to the crime. Here, the defendant was facing 1st degree murder which requires “pre-meditation and deliberation”. This is a specific mental state, and to exclude defense evidence such as an expert to that mental state at the time of the offense strips the defendant of making his defense.
The significance of this ruling is key to consider when any case is going to trial and the specific mental state of the defendant is at issue.
