Psychiatry Investig.  2020 Sep;17(9):880-888. 10.30773/pi.2019.0326.

Anger-Related Characteristics According to Chronotypes in Bipolar or Depressive Disorders

• Kang TU
• Moon E
• Choi Y
• Suh H
• Park JM
• Lee BD
• Lee YM
• Jeong HJ
• Kim SY
• Lee K
• Lim HJ
• Yoon M

• KMID: 2507263
• DOI: http://doi.org/10.30773/pi.2019.0326

Abstract

Objective
Though anger was highly associated with eveningness in general population, there is no study on the relationship between chronotype and anger-related characteristics in bipolar or depressive disorders. This study aimed to investigate the difference of anger-related characteristics according to chronotypes in bipolar or depressive disorders.
Methods
Patients with bipolar or depressive disorders (n=238) were included in this study. Their chronotypes and anger-related characteristics were assessed with a self-evaluation of the Composite Scale of Morningness (CSM), the State Trait Anger Expression Inventory (STAXI) and the Anger Coping Scale (ACS).
Results
The eveningness group in patients with mood disorders showed the highest scores of anger-trait (p<0.001), anger-expression (p=0.002) and anger-in (p<0.001) in STAXI subscales, verbal aggression (p=0.010) in ACS subscales among three groups, but the morningess group showed the lowest scores of these subscales among three groups. However, there were no significant differences in all subscales of the STAXI and ACS according to diagnostic subtypes in the Friedman test.
Conclusion
The results of this study suggested that eveningness in patients with mood disorders might be related to anger proneness and maladaptive anger coping. To manage anger emotion in the patients with mood disorders, therapeutic interventions to modulate eveningness might be helpful.

Keyword

Chronotype, Anger, Coping, Bipolar disorder, Depressive disorder