A College Professor in a Childhood Disorders Class Gives Extra

Multiple Choice

A college professor in a childhood disorders class gives extra credit on the basis of who answers questions correctly on an 80s-music quiz at the start of the class.Which of the following is likely NOT true of this approach?

A) This approach has low content validity because 80s music is not relevant to childhood disorders.
B) This approach would likely have low convergent validity with exam scores in childhood disorders.
C) This approach would likely have low predictive validity of future exam scores in childhood disorders.
D) This approach would likely have low test-retest reliability because multiple students might give different answers to the same question.