The prosecution rejected the defense's argument that Dahmer was insane. Forensic psychiatrist Dr. Phillip Resnick testified that Dahmer did not suffer from primary necrophilia because he preferred live sexual partners as evidenced by his efforts to create unresistant, submissive sexual partners devoid of rational thought and to whose needs he did not have to cater. Another prosecution expert to testify, Dr. Fred Fosdel, testified to his belief that Dahmer was without mental disease or defect at the time he committed the murders. He described Dahmer as a calculating and cunning individual, able to differentiate between right and wrong, with the ability to control his actions. Although Fosdel did state his belief that Dahmer suffered from paraphilia, his conclusion was that Dahmer was not a sadist.