Sidney Blatt
Sidney Blatt was an American clinical psychologist at Yale, Professor Emeritus of Psychiatry and Psychology, who set out the two-polarities model of depression: one form organised around the fear of losing people, and another organised around the fear of failing and being found wanting. The second of those established self-criticism as a lasting feature of personality rather than a passing mood, and it is the line of work everything on this site's self-criticism page descends from. He was born in 1928 and died in 2014.
Who they are
In plainer words, Blatt's claim was that depression does not come in one shape. Some people arrive at it through dependence and the dread of being left. Others arrive at it through the standards they hold themselves to, and the contempt they turn on themselves for missing them. Treating those as the same condition, he argued, obscures what is actually going on.
What his line of work is used for here is a boundary, not a diagnosis. Ordinary self-criticism is a way of talking. The heavier version Blatt described persists for weeks rather than hours, slides from having done a bad thing to being a bad person, interferes with sleep and work and relationships, and is not shifted by evidence. That is a matter for a doctor or a qualified therapist, and established therapies work on it directly.
Key papers
Blatt, S. J., & Zuroff, D. C. (1992). "Interpersonal relatedness and self-definition: two prototypes for depression", Clinical Psychology Review, 12(5), 527 to 562. The standard review citation for the vulnerability framework. The page range is unconfirmed and should be checked before publication.
Re-analyses of a large American depression treatment trial, on self-criticism measured before treatment began. Confirmed in outline through secondary summaries only. No single citable first author and year has been fixed, so these are not cited in body copy.
Key ideas
The finding that matters here: in that large treatment trial, self-criticism measured before treatment went with less symptom improvement, with more difficulty forming a working relationship with the therapist, and with worse coping, both at the end of treatment and eighteen months later. A fall in self-criticism during treatment was among the strongest predictors of lasting improvement.
These are predictive rather than experimental data. They say self-criticism travels with worse outcomes. They do not show that it causes them.
David Zuroff is the principal collaborator and the living half of the citation, and he is also a co-author on the goal-pursuit work that connects this clinical line to the everyday one.
Concepts on this site
Post-Traumatic Stress Disorder, neighbouring clinical territory, which has no page on this site yet
Find them elsewhere
Nothing confirmed. A search was run and no website or account could be tied to this person with enough certainty to publish. A name match on its own is not evidence, and a wrong link here would be worse than none.
Checked 2026-09-11. Handles and affiliations go out of date, so treat this block as a snapshot rather than a standing fact.
Sources
- Blatt, S. J., & Zuroff, D. C. (1992). Clinical Psychology Review, 12(5), 527 to 562. Page range flagged as unconfirmed.
- Vault verification record, 2026-09-11. Affiliation and dates confirmed. The treatment-trial re-analyses remain unfixed to a citable first author and year and are therefore not quoted in body copy anywhere on this site.