Second to fourth digit ratio and male ability in sport: implications for sexual selection in humans

Manning, John T.; Taylor, Rogan

doi:10.1016/s1090-5138(00)00063-5

Cited by 378 publications

(346 citation statements)

References 25 publications

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“…Although in this study we are not discussing these correlations, taken together all the data mentioned above, we may conclude that CAG repeats AR gene polymorphism may be suggested as a potential gene marker of sportive success. This conclusion confirms the original hypothesis of Manning and Taylor on existence of correlations between the morphologic and the physiologic masculinity and the lower number of CAG repeats in AR gene [27].…”

Section: Resultssupporting

confidence: 90%

Molecular-Genetic Polymorphisms of Dopamine, Serotonin and Androgenic Systems as Molecular Markers of Success in Judo Wrestling Sportsmen

Butovskaya¹,

Vasilyev²

2013

JBABM

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In this study we tested gene-candidates, associated with the stress-resistance and personality traits, aggression in particular, in 16 world-class judo sportsmen, and 40 young men as a control sample from general Russian population (all men were of Caucasian origin). The polygenic profile with 9 candidate genes which included 10 polymorphisms (i.e., AR, DRD4, DRD2, DAT1, COMT, 5-HTTL, MAOA, HTR1A and HTR2A) connected to the functioning of serotonin, dopamine, and androgenic systems were determined. It was demonstrated that judo sportsmen significantly differed from the control group by higher frequencies of AR alleles with lower numbers of CAG repeats, V/V genotype of COMT gene, and G/G genotype of HTR1A gene, thus suggesting these polymorphisms as genetic markers of sportive success in wrestling.

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Section: Resultssupporting

confidence: 90%

Molecular-Genetic Polymorphisms of Dopamine, Serotonin and Androgenic Systems as Molecular Markers of Success in Judo Wrestling Sportsmen

Butovskaya¹,

Vasilyev²

2013

JBABM

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“…A low second to fourth digit ratio (2D:4D) has been related to high prenatal testosterone levels (Manning et aI., 1998;Manning, 2002) and to a number of psychological factors such as masculine gender identity (Csatho et aI., 2003), aggression in men (Bailey & Hurd, in press), high status in competitive sports (Manning & Taylor, 2001) and in music (Sluming & Manning, 2000). In younger humans, a low 2D:4D has been related to lower levels of pro social behavior in preschool girls (but not in boys) (Williams, Greenhalgh, & Manning, 2003), and to physical (but not verbal) aggression in school boys (Manning & Wood, in Manning, 2002).…”

Section: D:4d and Cooperative Behaviormentioning

confidence: 99%

Second to fourth digit ratio and cooperative behavior

Millet

Dewitte

2006

Biological Psychology

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“…In particular, 2D:4D appears to be influenced by androgens: a more masculine digit ratio has been associated with CAH (Brown, Hines, Fane, & Breedlove, 2002;Okten, Kalyoncu, & Yaris, 2002, but see Buck, Williams, Hughes., & Acerini, 2003, as well as genetic predictor of androgen sensitivity (Manning, Bundred, Newton, & Flanagan, 2003). Because 2D:4D may reflect prenatal androgens, multiple studies have utilized this morphological marker to examine a possible role of early androgens on spatial ability (Alexander, 2005;Austin, Manning, McInroy, & Mathews, 2002;Coolican & Peters, 2003;Csatho, Karadi, & Kallai., 2005;Csatho et al, 2003;Kempel, Burk, & Hennig, 2005;Kempel, Gohlke et al, 2005;Loehlin, Luciano, Medland, & Martin, 2005;Manning & Taylor, 2001;McFadden & Schubel, 2003;Peters & Manning, 2005;Poulin, O'Connell, & Freeman, 2004;Putz, Gaulin, Sporter, & McBurney, 2004;Rahman, Wilson, & Abrahams, 2004;Sanders, Bereckzei, Csatho, & Manning, 2005;Scarbrough & Johnston, 2005;van Anders & Hampson, 2005). The results of these studies have also been quite variable, with some finding positive relationships, others finding negative relationships, and still others finding no significant relationship, even within a single sex (see Putz et al, 2004 for a partial review).…”

Section: Introductionmentioning

confidence: 99%

Spatial Ability and Prenatal Androgens: Meta-Analyses of Congenital Adrenal Hyperplasia and Digit Ratio (2D:4D) Studies

et al. 2007

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Hormonal manipulations indicate that early androgens organize sex differences in spatial ability in animal models. In humans, spatial ability is also sexually dimorphic, and information about the effects of prenatal androgens on spatial ability can be obtained from studies of congenital adrenal hyperplasia (CAH) and the ratio of the second and fourth finger lengths (2D:4D). CAH is a condition characterized by prenatal overproduction of adrenal androgens, and several lines of evidence suggest that 2D:4D reflects prenatal androgen exposure. Some studies have found that these proxy measures of prenatal androgenization predict spatial ability, others have found no significant relationship, and yet others have obtained results in opposite directions. In light of these mixed findings, we conducted meta-analyses of published literature and unpublished results to determine if, across studies, either of these indications of prenatal androgens predicts spatial ability. In addition, we applied a trim and fill analysis to the data in search of asymmetry that might be an indication of publication bias. Results indicate that females with CAH have significantly better spatial abilities, and CAH males have worse spatial abilities, than do controls. Little or no relationship exists between 2D:4D and spatial ability. Implications for possible hormonal contributions and the developmental timing of sex differences in spatial cognition are discussed.

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Second to fourth digit ratio and male ability in sport: implications for sexual selection in humans

Cited by 378 publications

References 25 publications

Molecular-Genetic Polymorphisms of Dopamine, Serotonin and Androgenic Systems as Molecular Markers of Success in Judo Wrestling Sportsmen

Molecular-Genetic Polymorphisms of Dopamine, Serotonin and Androgenic Systems as Molecular Markers of Success in Judo Wrestling Sportsmen

Second to fourth digit ratio and cooperative behavior

Spatial Ability and Prenatal Androgens: Meta-Analyses of Congenital Adrenal Hyperplasia and Digit Ratio (2D:4D) Studies

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