Aims. Assessment of changes in the severity of symptoms in patients with neurotic and personality disorders using the Clark and Watson's tripartite model of anxiety and depression. Material and methods. In total 77 patients were included in the study, 20 men and 57 women in the age range from 20 to 56 years old (median 33 years old). Assessments were done before and after treatment in an outpatient ward for patients diagnosed with neurotic and personality disorders. The treatment took the form of 12 weeks of group psychodynamic therapy. The severity of symptoms was assessed using the SCL-90-R (Symptom Checklist-90-Revised) and PSE (Present State Examination from SCAN 2.0) questionnaires. Results. The mean ratings of both subjective (SCL-90-R) and objective (PSE) measures of the elements in the tripartite model decreased during treatment. These decreases are statistically significant for all the scales, although they are small. A greater decrease was noticed in the LPA ratings according to the PSE questionnaire. The pattern of changes was similar for all the elements of the tripartite model. Slightly less than 2/3rd of the respondents showed an improvement, the ratings of about 25% rose and the ratings of the remaining 10% did not change. Conclusion. The results indicate that the usefulness of the tripartite model of anxiety and depression in the group of patients is limited. The differences between the first and second assessment were similar in all three dimensions, so they are exchangeable.