When personality meets surprise: individual differences in memory for unexpected events.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Personality Psychology

Background:

• Expectation influences memory encoding, with unexpected stimuli typically leading to better recall.
• The impact of individual personality traits on this expectation-memory relationship is not well understood.

Purpose of the Study:

• To investigate how personality traits modulate memory encoding for expected versus unexpected events.
• To determine if dispositional factors shape the recollection benefit for unexpected stimuli.

Main Methods:

• Two experiments were conducted involving participants learning symbol-stimulus contingencies.
• Contingencies were violated for some stimuli during encoding, followed by a recognition memory test.
• Experiment 1 measured state/trait anxiety and risk-taking; Experiment 2 assessed the Big Five personality traits.

Main Results:

• Unexpected events consistently improved recollection in both experiments.
• The magnitude of this recollection benefit was moderated by personality traits.
• Low trait anxiety and risk-taking, and low extraversion/high negative emotionality, were associated with a diminished recollection advantage for unexpected events.

Conclusions:

• Personality traits dynamically shape the influence of expectation on memory formation.
• Individual differences in dispositional factors interact with cognitive processes like memory encoding.
• Findings offer insights into memory theory and have potential applied implications.