Extraversion and short-term memory for chromatic stimuli: an event-related potential analysis.

Stauffer, Corinne; Indermühle, Rebekka; Troche, Stefan J.; Rammsayer, Thomas H. (2012). Extraversion and short-term memory for chromatic stimuli: an event-related potential analysis. International journal of psychophysiology, 86(1), pp. 66-73. Elsevier 10.1016/j.ijpsycho.2012.07.184

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The present study investigated extraversion-related individual differences in visual short-term memory (VSTM) functioning. Event related potentials were recorded from 50 introverts and 50 extraverts while they performed a VSTM task based on a color-change detection paradigm with three different set sizes. Although introverts and extraverts showed almost identical hit rates and reaction times, introverts displayed larger N1 amplitudes than extraverts independent of color change or set size. Extraverts also showed larger P3 amplitudes compared to introverts when there was a color change, whereas no extraversion-related difference in P3 amplitude was found in the no-change condition. Our findings provided the first experimental evidence that introverts' greater reactivity to punctuate physical stimulation, as indicated by larger N1 amplitude, also holds for complex visual stimulus patterns. Furthermore, P3 amplitude in the change condition was larger for extraverts than introverts suggesting higher sensitivity to context change. Finally, there were no extraversion-related differences in P3 amplitude dependent on set size. This latter finding does not support the resource allocation explanation as a source of differences between introverts and extraverts.

Item Type:

Journal Article (Original Article)

Division/Institute:

07 Faculty of Human Sciences > Institute of Psychology > Personality Psychology, Differential Psychology and Diagnostics
10 Strategic Research Centers > Center for Cognition, Learning and Memory (CCLM)

UniBE Contributor:

Stauffer, Corinne; Indermühle, Rebekka; Troche, Stefan and Rammsayer, Thomas

Subjects:

100 Philosophy > 150 Psychology
300 Social sciences, sociology & anthropology > 370 Education

ISSN:

0167-8760

Publisher:

Elsevier

Language:

English

Submitter:

Andrea Stettler

Date Deposited:

30 May 2014 15:07

Last Modified:

19 Nov 2014 14:22

Publisher DOI:

10.1016/j.ijpsycho.2012.07.184

PubMed ID:

22871484

URI:

https://boris.unibe.ch/id/eprint/53247

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