If a researcher measures self-esteem with the Rosenberg Self-Esteem Scale, will another researcher get the same results measuring self-esteem with the Harter SelfEsteem Measure? This is a question of...

If a researcher measures self-esteem with the Rosenberg Self-Esteem Scale, will another researcher get the same results measuring self-esteem with the Harter SelfEsteem Measure? This is a question of

a. external validity.

b. internal validity.

c. reliability.

d. accuracy