Hi I am developing and validating a clinical interview based tool which will be administered by clinicians.
To assess its qualitative face validity, I have done cognitive interviews with the target population of individuals diagnosed with addiction
However, I want to know if there is any way to assess face validity through quantitative scores. I have come across "impact scores" but they are mostly used for self-report scales.
Is it suggested to apply the same process for a clinician administered measure?
In this case, can some patients read the interview and score the importance of the items to assess face validity?
Thank you!