While assessment of clinical symptoms and feedback on treatment response are important components of effective therapy, it is my opinion that this petition would not be an effective way to ensure that they are implemented.  Two specific concerns are:

1-There is no single measure that would effectively assess symptoms for all patients and diagnoses.

2-Patients are entitled to refuse any aspect of treatment, including completing assessment measures.  This could potentially create a conflict between the patients' wishes and a mandate to assess pre-and post-treatment. 

For these and other reasons, I believe this petition should be denied.