Evaluating Individual Differences in Patients with Major Depressive Disorder focused on Nine Types Temperament Model

Abstract

Major depresif bozukluk tanılı hastaların bireysel farklılıkları üzerine dokuz tip mizaç modeli odaklı bir inceleme Evaluating individual differences in patients with major depressive disorder focused on nine types temperament model SUMMARY Objective: The aim of this study is to investigate the relationship of Major Depressive Disorder (MDD) and MDD specifiers with temperament and personality traits with a perspective focused on Nine Type Temperament Model (NTTM). Method: 203 healthy participants who are matched with the 208 MDD participants group between 18-60 years old and in at least eight weeks remission period and treatment in progress, without an additional diagnosis were included in the study. Socio-demographic data form, Nine Types of Temperament Scale (NTTS) and Temperament Character Inventory (TCI) were applied to all participants, and in addition, Hamilton Depression Rating Scale (HDRS) were applied to the subjects with MDD. MDD specifiers were evaluated using follow-up data files. Results: According to results, both Nine Type Temperament (NTT) Model's types, which are NTT1, NTT2, NTT3, NTT4, NTT6 and NTT8, and Psychobiological Personality Model's dimensions which are consisted of the cooperation, persistence, harm avoidance and selfmanagement were found to be associated with MDD. From the point of MDD determinants; anxiety-distressing characteristics are associated with NTM2, NTM3, NTM6, NTM9; melancholy characteristics is concerned with NTT1, NTT5 and NTT6; seasonal characteristics are related to NTT4; mixed features are relevant with NTT4 and NTT7; and atypical features are associated with NTT5, NTT7, NTT9. As a result, MDD determinants are found to be associated with temperament types which are coming from NTTM. Discussion: It is seen that temperament, which constitutes the structural basis of personality, is an effective parameter both in the diagnosis and in the individual-specific recognition of symptomatology in MDD patients. In addition, it can be said that temperament can be a discriminating factor in defining MDD specifiers. The development of temperament-oriented diagnosis and treatment strategies in future studies may be beneficial for the practice.