Asking such a question is like saying "Do you consider yourself to be stupid?". You can expect the aggregate result to reflect ego more than anything else. Just

Asking such a question is like saying "Do you consider yourself to be stupid?". You can expect the aggregate result to reflect ego more than anything else. Just like objective tests are needed to measure intelligence, you would need objective tests to measure evilness, or the inverse of altruism. On another note, you would need to define the types of evil with which you are concerned.