The Role of Emotion Regulation and Loss-Related Coping Self-efficacy in an Internet Intervention for Grief: Mediation Analysis
Authors: Brodbeck Jeannette , Berger Thomas , Biesold Nicola , Rockstroh Franziska , Schmidt Stefanie J , Znoj Hansjoerg 
Published: December 2021

Background
Internet interventions for mental disorders and psychological problems such as prolonged grief have established their efficacy. However, little is known about how internet interventions work and the mechanisms through which they are linked to the outcomes.

Objective
As a first step in identifying mechanisms of change, this study aimed to examine emotion regulation and loss-related coping self-efficacy as putative mediators in a randomized controlled trial of a guided internet intervention for prolonged grief symptoms after spousal bereavement or separation or divorce.

Methods
The sample comprised older adults who reported prolonged grief or adaptation problems after bereavement, separation, or divorce and sought help from a guided internet intervention. They were recruited mainly via newspaper articles. The outcome variables were grief symptoms assessed using the Texas Revised Inventory of Grief and psychopathology symptoms assessed using the Brief Symptom Inventory. A total of 6 module-related items assessed loss-focused emotion regulation and loss-related coping self-efficacy. In the first step, path models were used to examine emotion regulation and loss-related coping self-efficacy as single mediators for improvements in grief and psychopathology symptoms. Subsequently, exploratory path models with the simultaneous inclusion of emotion regulation and self-efficacy were used to investigate the specificity and relative strength of these variables as parallel mediators.

Results
A total of 100 participants took part in the guided internet intervention. The average age was 51.11 (SD 13.60) years; 80% (80/100) were separated or divorced, 69% (69/100) were female, and 76% (76/100) were of Swiss origin. The internet intervention increased emotion regulation skills (β=.33; P=.001) and loss-related coping self-efficacy (β=.30; P=.002), both of which correlated with improvements in grief and psychopathology symptoms. Path models suggested that emotion regulation and loss-related coping self-efficacy were mediators for improvement in grief. Emotion regulation showed a significant indirect effect (β=.13; P=.009), whereas coping self-efficacy showed a trend (β=.07; P=.06). Both were confirmed as mediators for psychopathology (β=.12, P=.02; β=.10; P=.02, respectively). The path from the intervention to the improvement in grief remained significant when including the mediators (β=.26, P=.004; β=.32, P≤.001, respectively) in contrast to the path from the intervention to improvements in psychopathology (β=.15, P=.13; β=.16, P=.10, respectively).

Conclusions
Emotion regulation and loss-related coping self-efficacy are promising therapeutic targets for optimizing internet interventions for grief. Both should be further examined as transdiagnostic or disorder-specific putative mediators in internet interventions for other disorders.

Trial Registration
ClinicalTrials.gov NCT02900534; https://clinicaltrials.gov/ct2/show/NCT02900534

International Registered Report Identifier (IRRID)
RR2-10.1186/s13063-016-1759-5