Dr. Rodriquez is considering conducting a study examining whether narcissistic people have poorer romantic relationships than those who are not narcissistic. To measure narcissism, she uses a narcissism scale created by a colleague. Question 1 of the scale reads, I tend not to think about other people as much as I think about myself. Question 2 reads, I do not have a high opinion of myself. Question 3 reads, I think other people think I am really special. Dr. Rodriquez is concerned whether the scale will really measure narcissism or if it will measure some other related concept. In short, she is concerned about the scale s .