Individualized rating scales. You could work with the mother and the son to enumerate separate, individually tailored sets of targets relevant to the quality of the relationship, and to develop the...

Individualized rating scales. You could work with the mother and the son to enumerate separate, individually tailored sets of targets relevant to the quality of the relationship, and to develop the most appropriate dimensions on which to rate the targets. Also, you could construct a scale for your own use that would include the targets you perceived as most important and the dimensions on which to rate these targets.