Dr.Valencia is considering conducting a study examining whether narcissistic people have poorer social interactions than those who are not narcissistic.One of her first tasks is to determine which of her participants are narcissistic and which are not.She decides to use the scale created by a colleague,the Mayo scale.Question 1 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.Valencia decides to test the internal reliability of her measure.Which of the following results would make her happy?
A)a = 0.10
B)a = -0.03
C)a = 0.95
D)a = -0.98

Question

Dr.Valencia is considering conducting a study examining whether narcissistic people have poorer social interactions than those who are not narcissistic.One of her first tasks is to determine which of her participants are narcissistic and which are not.She decides to use the scale created by a colleague,the Mayo scale.Question 1 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.Valencia decides to test the internal reliability of her measure.Which of the following results would make her happy?

-Dr.Valencia decides to test the internal reliability of her measure.Which of the following results would make her happy?
A)a = 0.10
B)a = -0.03
C)a = 0.95
D)a = -0.98

Quizplus · Accepted Answer

The internal reliability of a measure can be assessed using Cronbach's alpha coefficient, which ranges from 0 to 1. A higher alpha indicates a more reliable measure. Generally, an alpha of 0.7 or higher is considered acceptable, while values above 0.9 are excellent. Therefore, Dr. Valencia would be happy with an alpha of 0.95, as it indicates that the Mayo scale is a highly reliable measure for assessing narcissism in her participants. The other choices indicate negative or extremely low reliability, which would not be desirable for a research study.

DrValencia Is Considering Conducting a Study Examining Whether Narcissistic People