Differential Neural Correlates Underlie Judgment of Learning and Subsequent Memory Performance

Area of Science:

• Cognitive Neuroscience
• Psychology

Background:

• Judgment of learning (JOL) is crucial for self-regulated learning.
• JOLs are generally accurate but can deviate from memory performance, especially when made immediately after learning.
• Neural processes of subjective JOL and objective memory require clearer dissociation.

Purpose of the Study:

• To investigate the neural correlates distinguishing subjective judgments of learning from actual memory performance.
• To understand the neural basis of metamemory bias.

Main Methods:

• Participants studied words and made immediate JOLs for half the items.
• Memory was tested 1 day later.
• Neural activity and functional connectivity were analyzed during encoding.

Main Results:

• Items judged as 'will be remembered' showed increased default-mode network activity (ventromedial PFC, posterior cingulate cortex) and weaker left dorsolateral PFC-visual cortex connectivity during encoding.
• Items actually remembered versus forgotten showed the opposite neural pattern.
• Neural patterns for JOLs differed from those for actual memory recall.

Conclusions:

• Distinct neural mechanisms underlie subjective judgments of learning and objective memory performance.
• These findings illuminate the neural basis of metamemory bias in humans.