With sadness comes accuracy; with happiness, false memory: mood and the false memory effect

Area of Science:

• Cognitive Psychology
• Affective Science

Background:

• The Deese-Roediger-McDermott (DRM) paradigm is a well-established method for inducing false memories in laboratory settings.
• The affect-as-information hypothesis suggests that mood states can influence cognitive processing, potentially impacting memory formation.

Purpose of the Study:

• To investigate the influence of experimentally induced positive and negative moods on the DRM false memory effect.
• To determine whether mood effects on false memories occur during memory encoding or retrieval.

Main Methods:

• Two experiments were conducted using the DRM paradigm.
• Participants were induced into positive, negative, or neutral mood states.
• Experiment 2 included inclusion instructions to differentiate encoding from retrieval effects.

Main Results:

• Individuals in negative moods exhibited significantly fewer false memories compared to those in positive or neutral moods.
• Moods were found to influence the accessibility of critical lures during the encoding phase.
• Evidence suggests mood does not significantly alter monitoring processes during retrieval.

Conclusions:

• Induced mood states, particularly negative ones, can significantly reduce the likelihood of forming false memories.
• The findings support the affect-as-information hypothesis by demonstrating that mood impacts encoding processes, specifically lure accessibility.
• Moods influence memory formation by altering cognitive processing strategies during encoding, rather than by affecting retrieval monitoring.