Nikolai Haahjem Eftedal

• Kleppestø, Thomas Haarklau; Czajkowski, Nikolai Olavi; Vassend, Olav; Røysamb, Espen; Eftedal, Nikolai Haahjem; Sheehy-Skeffington, Jennifer; Kunst, Jonas R. & Thomsen, Lotte (2019). Correlations between social dominance orientation and political attitudes reflect common genetic underpinnings. Proceedings of the National Academy of Sciences of the United States of America.  ISSN 0027-8424.  116(36), s 17741- 17746 . doi: 10.1073/pnas.1818711116 Fulltekst i vitenarkiv.
• Kleppestø, Thomas Haarklau; Eftedal, Nikolai Haahjem & Thomsen, Lotte (2019). Social Dominance Orientation(SDO), In Shackelford Todd K. & Viviana A. Weekes-Shackelford (ed.),  Encyclopedia of Evolutionary Psychological Science.  Springer International Publishing.  ISBN 9783319169996.  Encyclopedia of Evolutionary Psychological Science.
• Prendergast, Claire Nicole; Eftedal, Nikolai Haahjem; Ikonomeas, Alexander Gustav Fredriksen; Brun, Aurora; Huth, Håkon & Bredesen, Marit (2019). The Norwegian version of the five factor narcissism inventory for vulnerable narcissism and the grandiose narcissism subscale of indifference: Psychometric properties of the long‐ and short‐form versions. Scandinavian Journal of Psychology.  ISSN 0036-5564.  60(5), s 492- 500 . doi: 10.1111/sjop.12569 Fulltekst i vitenarkiv.

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• Eftedal, Nikolai Haahjem; Kleppestø, Thomas Haarklau; Røysamb, Espen; Vassend, Olav; Ystrøm, Eivind & Thomsen, Lotte (2019). Moral opportunism: A unique genetic grounding associates lesser guilt from perpetrating injustice with greater sensitivity to being the victim of it..
• Kleppestø, Thomas Haarklau; Czajkowski, Nikolai Olavi; Vassend, Olav; Røysamb, Espen; Eftedal, Nikolai Haahjem; Kunst, Jonas R.; Sheehy-Skeffington, Jennifer & Thomsen, Lotte (2019). Social dominance orientation has both genetic and unique environmental influences, but only genetic pleiotropy accounts for its correlation with political attitudes..

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