Author Question: For a scale that is measuring eating disorder likelihood to have good _______________, it needs to ... (Read 37 times)

casperchen82 · **on:** Jun 21, 2018

For a scale that is measuring eating disorder likelihood to have good _______________, it needs to be able to differentiate between those who will get eating disorders versus those who will not.

A) external validity
B) interrater reliability
C) predictive validity
D) test-retest reliability

Question 2

We are designing a new instrument to measure happiness. If we ask participants to complete the same instrument of happiness over several days, we are testing this new instrument's ______________.

A) external validity
B) interrater reliability
C) predictive validity
D) test-retest reliability