2d:4d, Big Fives and Aggression in Young Men of Caucasian, Ural and Asian Origin

Abstract

According to modern views on human bio-sociality, Big Five personality traits have been shaped in the process of human evolution and their expression is an outcome of the complex interaction of prenatal predispositions and cultural environment. Present study investigates the impact of prenatal androgenization and cultural norms on the personality traits in adult men from four ethnic groups living on the territory of Russian Federation. The study was conducted on 263 young men (age range 17-30 years), including Russians, Armenians, Ob-Ugric and Buryats. The results revealed significant population differences in 2D:4D ratios on both hands, with lowest ratios for Asian sample, increasing in populations to the West. Significant ethnic differences were found for Openness to New Experience, Conscientiousness, and Neuroticism. Positive association between 2D:4D ratios on the right hand and Agreeableness in men with no respect to population origin was detected. This relationship becomes stronger, when controlling for aggressiveness.

Oxytocin receptor gene polymorphism (rs53576) and digit ratio associates with aggression: comparison in seven ethnic groups

“…The sample included 1705 adults from seven ethnic groups of European, Asian, and African origin. Four ethnic groups were from Russia (Russians [ 89 ], Tatars [ 75 ], Ob-Ugric [ 96 , 97 ], and Buryats [ 75 , 98 ]) with the mean age of 21 years. These samples were collected between 2010 and 2019.…”

“…These groups are representatives of traditional African cultures. More information about these cultures may be found elsewhere [ 15 , 16 , 74 , 87 – 89 , 96 – 105 ].…”

“…The BPAQ includes 29 statements, grouped into four scales—physical aggression (9 items), verbal aggression (5 items), anger (7 items), and hostility (8 items)—answered on a Likert scale anchored by 1 (extremely uncharacteristic of me) and 5 (extremely characteristic of me). The translation of the BPAQ into Russian and Swahili was done, following accepted standards (translations and back translations by four bilingual assistants [ 108 , 109 ]), and translated versions have been already used in several previous studies [ 15 – 17 , 74 , 75 , 78 , 87 – 89 , 96 ].…”

2D:4D ratio as marker of prenatal androgenization and its predictor validity for anthropologists and evolutionary psychologists: “pro” and “contra”

“…Ìíîãî÷èñëåííûå èññëåäîâàíèÿ äåìîíñòðèðóþò ýòíè÷åñêèå ðàçëè÷èÿ ïàëüöåâîãî èíäåêñà [Áóòîâñêàÿ ñ ñîàâò., 2015a, 2015á; Áóòîâñêàÿ, Ìêðò÷ÿí, 2016; Àïàëüêîâà ñ ñîàâò., 2018; Áóðêîâà ñ ñîàâò., 2019; Manning et al, 2004;Manning, 2008;Hönekopp, Schuster, 2010;Butovskaya et al, 2013a;, 2019Manning et al, 2014b;Dey, Kapoor, 2016;Rostovtseva et al, 2019].  áîëüøèíñòâå ñëó÷àåâ, ìóae÷èíû èìåëè áîëåå íèçêèé èíäåêñ 2D:4D, ÷åì aeåíùèíû èç òåõ aeå ïîïóëÿöèé.…”

“…Îáðàùàåò íà ñåáÿ âíèìàíèå òîò ôàêò, ÷òî ìóae÷èíû ñ âûðàaeåííûì ìàñêóëèííûì êîìïëåêñîì, âêëþ÷àþùèì ñèëüíóþ ñòåïåíü ïðåíàòàëüíîé àíäðîãåíèçàöèè (íèçêèå çíà÷åíèÿ 2D:4D), íå ñêëîííû ê êîîïåðàòèâíîìó ïîâåäåíèþ.  íàøåì èññëåäîâàíèè, ðåçóëüòàòû êîòîðîãî îïèñàíû â äðóãîé ðàáîòå [Rostovtseva et al, 2019] òàêaeå áûëà âûÿâëåíà ïîëîaeèòåëüíàÿ ëèíåéíàÿ ñâÿçü ìåaeäó çíà÷åíèÿìè ïàëüöåâûõ èíäåêñîâ ìóae÷èí è êîîïåðàòèâíîñòüþ ïî îïðîñíèêó ñàìîîöåíêè (NEO), ÷òî ñîãëàñóåòñÿ ñ âûâîäàìè äðóãèõ àâòîðîâ [Luxen, Buunk, 2005].…”