"Off with the old": mindfulness practice improves backward inhibition.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Clinical Psychology

Background:

• Mindfulness practice is associated with reduced depressive rumination.
• Mindfulness involves inhibiting irrelevant past information, akin to backward inhibition (BI).
• Impaired BI is linked to depressive rumination, while Competitor Rule Suppression (CRS) involves memory tagging.

Purpose of the Study:

• To investigate whether mindfulness training specifically improves backward inhibition (BI).
• To determine if mindfulness impacts Competitor Rule Suppression (CRS) differently than BI.
• To explore the role of task set inhibition in mediating mindfulness and reduced rumination.

Main Methods:

• A randomized controlled trial comparing a mindfulness training group (n=38) with a waiting list control group (n=38).
• An eight-session mindfulness intervention program.
• Assessment of backward inhibition (BI) and Competitor Rule Suppression (CRS) in task switching paradigms.

Main Results:

• The mindfulness training group showed significant improvement in backward inhibition (BI) compared to the control group.
• No significant improvement in Competitor Rule Suppression (CRS) was observed in the mindfulness group.
• Baseline levels of BI and CRS were similar between groups before the intervention.

Conclusions:

• Mindfulness practice specifically enhances task set inhibition, as measured by backward inhibition (BI).
• This improvement in BI may mediate the reduction in depressive rumination observed with mindfulness.
• Findings support the role of enhanced cognitive control in mindfulness, facilitating present-moment awareness.