Effects of modifying interpretation bias on transdiagnostic repetitive negative thinking

Area of Science:

• Psychology
• Clinical Psychology
• Cognitive Behavioral Therapy

Background:

• Repetitive negative thinking (RNT), such as worry and rumination, is prevalent in emotional disorders.
• Interpretation bias, the tendency to interpret ambiguous situations negatively, is linked to RNT.
• Cognitive bias modification of interpretations (CBM-I) has shown promise in reducing RNT and improving mood in diagnosed populations.

Purpose of the Study:

• To investigate if CBM-I is effective for individuals with high levels of worry or rumination, regardless of diagnosis.
• To determine if enhancing emotional engagement in CBM-I, through positive resolution generation and imagery, increases its effectiveness.

Main Methods:

• Community volunteers with excessive worry/rumination were randomly assigned to an active control, standard CBM-I (CBM_RNT), or enhanced CBM-I (CBM_ENH) group.
• Participants completed 10 internet-based sessions over one month.
• Interpretation bias, RNT, worry, and mood were assessed pre- and post-intervention, with follow-up assessments for RNT and mood.

Main Results:

• Both CBM-I conditions reduced negative intrusions and improved interpretations compared to the control group.
• At 1-month follow-up, CBM-I significantly reduced anxiety, depression, RNT, and recent worry compared to the control.
• The enhanced CBM-I showed greater improvements in interpretations and reduced negative intrusions immediately post-training, and reduced trait rumination at follow-up, but did not enhance effects on anxiety or depression.

Conclusions:

• Interpretation bias plays a role in maintaining transdiagnostic RNT.
• Internet-based CBM-I is a viable approach for reducing longer-term RNT.
• Enhancing emotional engagement in CBM-I may offer additional benefits for specific RNT components.