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Ansiktsigenkänning: Effekter av kort- och långtidsretention
Umeå University, Faculty of Social Sciences, Department of Psychology.
Umeå University, Faculty of Social Sciences, Department of Psychology.
2019 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [sv]

Igenkänning av ansikten har främst undersökts i form av korttidsretention. Via sådan forskning har det kunnat påvisas att människor generellt har en bättre förmåga till igenkänning av ansikten jämfört med visuella stimulus av liknande komplexitet. Det har även påvisats effekter av extraversion och kön på förmågan att känna igen ansikten. Denna studie undersökte långtidsretention av ansikten och detta i relation till extraversion och kön. Utöver detta undersökte studien relationen mellan igenkänning av ansikten och annat visuellt stimulus (hundar). Detta studerades genom en experimentell inomgruppsdesign där deltagarna utförde ett datorbaserat igenkänningstest direkt och 24 timmar efter inlärning. Extraversion mättes med självskattningsformuläret Revised NEO Personality Inventory (NEO-PI R). Studien inkluderade 51 deltagare (31 kvinnor, 19 män, en icke-binär, M = 27.69 år). Resultaten visade en fördel för igenkänning av ansikten, men kunde inte påvisa någon skillnad i nedgång stimulusen emellan. Vidare visade resultaten en signifikant stimulus × kön interaktion, där kvinnor presterade bättre än män på igenkänning av ansikten men inte på igenkänning av hundar. En effekt av extraversion hittades enbart i extremgrupperna på kontinuumet extraversion. Slutligen visade studien att det inte fanns något signifikant samband mellan prestation på igenkänning av hundar och ansikten vid det första testtillfället. I studien diskuteras implikationerna ett holistiskt processande verkar ha på inlärning men inte på minneskonsolidering över tid. Studien belyser också brister i tidigare studier som undersökt extraversion i relation till ansiktsigenkänning och fördjupar sig i eventuella orsaker till uppmätta könsskillnader.

Abstract [en]

Face-recognition has foremost been studied with a focus on short-term retention. This research has concluded that in general people are a better in recognizing faces in comparison to recognition of stimuli with matching complexity. Studies have also shown that extraversion and sex affect face-recognition ability. This study investigated long-term memory retention of faces in relation to extraversion and sex. In addition, this study explored the relationship between recognition of faces, and another visual stimulus (dogs). This was conducted by using an experimental within-subjects-design in which the participants performed a computer-based recognition-test both immediately after the study phase, as well as 24 hours later. Revised NEO Personality Inventory (NEO-PI R) was used to measure extraversion. The study had 51 participants (31 women, 19 men, one non-binary, M = 27.69 years). The results showed an advantage in recognition of faces but failed to show a difference in decline between stimuli. There was a stimulus × sex interaction, where women showed an advantage compared to men in recognition of faces but not regarding recognition of dogs. Extraversion was shown to have an effect on the performance only when the most and least extraverted was compared. Finally, there was no relationship between face-recognition and recognition of dogs in the short-term retention test. The study highlights shortcomings in earlier studies investigating extraversion in relation to face recognition and discusses possible reasons for the obtained sex differences. The study also discusses whether holistic processing is implicated in learning, but not with respect to long-term memory consolidation.

Place, publisher, year, edition, pages
2019. , p. 14
Keywords [en]
Face-recognition, long-term retention, extraversion, sex differences, holistic processing, NEO-PI R
Keywords [sv]
Ansiktsigenkänning, långtidsretention, extraversion, könsskillnader, holistiskt processande, NEO-PI R
National Category
Psychology
Identifiers
URN: urn:nbn:se:umu:diva-159459OAI: oai:DiVA.org:umu-159459DiVA, id: diva2:1318621
Subject / course
Examensarbete i psykologi
Educational program
Study Programme for University Diploma in Psychology
Presentation
2019-05-23, BT215, Umeå, 11:20 (Swedish)
Supervisors
Examiners
Available from: 2019-06-04 Created: 2019-05-28 Last updated: 2019-06-04Bibliographically approved

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