Autonomic evidence that avoidance matters in the mourning process: A prospective observational study in Japan

Area of Science:

• Psychology
• Psychophysiology
• Grief Research

Background:

• Prolonged grief is a debilitating condition.
• Targeting avoidance shows therapeutic potential.
• The link between avoidance, grief, and stress resilience (measured by HRV) is unclear.

Purpose of the Study:

• To investigate if avoidance interferes with mourning via altered stress resilience.
• To examine the relationship between avoidance, grief symptoms, and heart rate variability (HRV).

Main Methods:

• Prospective, observational study of 35 adults with prolonged grief.
• Assessed grief symptoms (Complicated Grief Questionnaire) and HRV (HF-HRV) over six months.
• Used principal component analysis to differentiate avoidance from grief.

Main Results:

• A nonlinear relationship was found between avoidance and HF-HRV.
• Lower avoidance correlated with lower HF-HRV.
• Grief improved longitudinally only in the low-avoidance group, driven by increased HRV.

Conclusions:

• Avoidance, despite short-term relief, may maintain grief longitudinally.
• This maintenance is linked to reduced autonomic resilience to stress.
• Targeting avoidance could be key for improving stress resilience in prolonged grief recovery.