This study investigates changes in latent mental structures along the anaclitic and introjective dimensions in relation to outcomes in 14 cases of publicly financed psychoanalysis. The method of prototype matching was adapted for personality assessment, and multiple outcome measures were applied. For the anaclitic cases, symptom reduction was accompanied by more mature integration of anaclitic and introjective personality dimensions, while the introjective cases showed symptom reduction without such improvement. This could indicate that sustainable change in latent mental structures is more difficult to achieve in introjective than in anaclitic patients. Further research is needed to validate these preliminary results.