In 2005, California State University's Media Psychology Lab surveyed 1,166 people Americans aged from 16 to 91 on the psychological appeal of movie monsters. Many of the characteristics associated with Jason Voorhees were appealing to the participants. In the survey, Jason was considered to be an "unstoppable killing machine." Participants were impressed by the "cornucopic feats of slicing and dicing a seemingly endless number of adolescents and the occasional adult." Out of the ten monsters used in the survey—which included vampires, Freddy Krueger, Frankenstein's monster, Michael Myers, Godzilla, Chucky, Hannibal Lecter, King Kong and the Alien—Jason scored the highest in all the categories involving killing variables. Further characteristics that appealed to the participants included Jason's "immortality, his apparent enjoyment of killing his superhuman strength."