I'd suggest the STIPO is a possibility, especially to measure the tendency of a person towards regression (http://www.personalitystudiesinstitute.com/pdf/Structured-Interview-of-Personality-Organization.pdf).
The non-existence of evidence-based out-comes of any sort, or psychological conditions of any sort which have been evaluated psychometrically in psychoanalytic terms or using such theory is the bane of the psychoanalytic school. You may have some greater success if you contact a school which is still teaching the theory. The Derner Institute at Adelphi University in Garden City, New York may be able to help you. Good luck.
I do not know of another statistically standardized instrument to measure regression, but simply observing the most evident, and the hightes level ego-defense mechanisms in use on that day would provide an easy-to use benchmark recognizeable by anyone trained to observe them. One could build such an instrument by focusing on the behavior of patients who share a single diagnosis, such as major depression, and score the ego defenses according to a simple rank-ordering such as Jerome Blackmun used in his text on the defenses. Measure depression severity with a standardized instrument such as BDI, MADRS or PHQ-9. One would expect higher level defenses to be availabale to patients who are less depressed, and lowel level defenses to those who are more depressed. If inter-rater reliability is high enough for the ego defenses, I would expect correlation to be as high as 0.65. However, Drs. Charder abd Marchand are correct. The Rorschach is already standardized,, and will tell you about the defenses in detail.
Dear colleagues, I thank you for the suggestions. However Frances Charder is wrong, today psychoanalysts have produced a vast amount of empirical evidence (eg. Studies Fonagy on mentalizion).
Thank you for informing me. I did say that I was not aware of any psychometrics or evidence-based studies regarding psychoanalysis, from my first response to you. I also referred you to an institute for added assistance. I would appreciate any further information you may have regarding this. I believe stating that I was "wrong" was an overstatement and quite rude. Thank you, Frances Charder
Dear Alessandro, I am not aware there is a "tool" in psychometric terms for the variable that you want to investigate. Regression is configurable as a construct that you can formalize quantitatively from its qualitative description, that you find in many dictionaries of Psychoanalysis. If you try it, let me know!
there is a most excellent tool - severely mistrusted by our evidence-debased friends, apparently - called an analyst.
This "tool" is able to use listening, intelligence, feeling, intuition, compassion and 100 years of psychoanalytic theory to fairly accurately predict and "measure" and to understand the degree and nature of regression in a particular person.
It is an expensive tool - little understood by the evidence-debased CBT-government health-fund alliance - but, it works. And updates are free, but require ongoing genuine interest in the human psyche and the world of the unconscious. To purchase a license requires great patience and curiosity and a mistrust of the usual forms of "evidence".
I totally agree with you: the analyst is the best clinical tool. However it is essential to develop research on psychoanalysis according to the criteria of the international scientific community. Otherwise the risk is to encourage those who want psychoanalysis outside institutions.
Check Peter Fonagy researches, he have a lot of experience with borderline patients that have this characteristics. He apply a test or interview to evaluate mentallization abilities that include the possibility to attribute mental and emotional states to others and to themselves.