Unringing the bell: Successful debriefing following a rich false memory study

Area of Science:

• Cognitive Psychology
• Memory Research

Background:

• False memory implantation studies aim to create memories of events that never occurred.
• Familial informants often assist in implanting vivid false memories.
• Debriefing is a technique used to retract implanted false memories.

Purpose of the Study:

• To assess the effectiveness of debriefing in retracting false memories.
• To determine the proportion of participants retaining false memories or beliefs post-debriefing.
• To investigate if richer, more detailed false memories are more resistant to retraction.

Main Methods:

• Replication of the "Lost in the Mall" false memory implantation protocol.
• Participants (N=123) underwent a false memory implantation procedure.
• Post-implantation, participants were debriefed and reassessed for memory and belief.

Main Results:

• Initially, 14% reported a false memory and 52% held a false belief.
• After debriefing, false memory rates dropped to 6% and false belief to 7%.
• Richer false memories were more resistant but still largely retracted; most persistent memories were nonbelieved.

Conclusions:

• Debriefing is effective in retracting implanted false memories.
• Even convincing and detailed false memories can be corrected.
• Participants can be "dehoaxed," returning to their pre-study state regarding the false event.