Sex and ethnic differences in 2nd to 4th digit ratio of children

Manning, John T.; Stewart, Alex G.; Bundred, Peter; Trivers, Robert

doi:10.1016/j.earlhumdev.2004.06.004

Cited by 242 publications

(161 citation statements)

References 14 publications

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“…According to the results of our research, the FI 2D:4D does not have statistically significant interrelations (p>0.05) with the parameters and indices studied (body weight, height, chest circumference, body mass index, physical condition, adaptive potential of the circulatory system, hand strength). According to foreign authors [3], this index in girls is more in comparison with boys, which coincides with the conclusions made in our study. Although the study does not reveal statistically significant interrelationships of FI 2D:4D depending on the type of constitution (p>0.05), many foreign authors note the presence of this relationship in males and females in other age groups [2].…”

Section: Resultssupporting

confidence: 81%

“…Low meaning of the finger index is explained by the high level of androgenic influence or by the increased perceptibility of some tissues to androgens. Prenatal androgenic influence onto the fetus defines a number of factors of postnatal life, such as anatomical and physiological features as well as the risks of diseases [3]. The study of finger indexes makes it possible to carry out research in the field of predisposition of the individual to certain somatic diseases, and also to mental deviations.…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of finger indices of hand 1D:3D and 2D:4D in dependence on gender and type of the constitution

Perepelkin¹,

Mandrikov²,

Krayushkin³

et al. 2018

IJET

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Abstract1D:3D and 2D:4D finger ratios of a hand are widely used for research in the field of predisposition of the individual to certain somatic diseases. 299 young people were surveyed in total with the calculation of the Pignet index, using a flatbed scanner and the author's program HandScaner. As part of the study, it was identified that the finger indices of 1D:3D in young men is significantly greater than that of girls in the hypersthenic group by 2% (p<0.05). Finger index of 1D:3D is more by 1% in young men in the normosthenic group, in the asthenic group, the finger index of 1D:3D is more in girls by 1% (p>0.05). When studying the index 2D:4D, there were no statistically significant differences between the left and right hands in young men and women (p>0.05), as well as the relationship with the type of body build. Despite this, many foreign authors note the presence of this connection in males and females in other age groups. In addition, according to foreign authors, this index, as well as in our study, is more in girls in comparison with young men.

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Section: Resultssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Characteristics of finger indices of hand 1D:3D and 2D:4D in dependence on gender and type of the constitution

Perepelkin¹,

Mandrikov²,

Krayushkin³

et al. 2018

IJET

View full text Add to dashboard Cite

show abstract

“…Similarly, larger ratios, where the index finger is equal to or longer than the ring finger, result from greater exposure to oestrogen and therefore might be thought of as a measure of femininity. These sexually dimorphic properties of the digit ratio appear to be consistent across all cultures and are independent of age and overall height (Manning, Stewart, Bundred, & Trivers, 2004).…”

Section: Introductionmentioning

confidence: 85%

Finger Length Digit Ratio and Gender Differences in Sensation Seeking and Internet Self-Efficacy

Eachus

2007

Proceedings of the 2007 InSITE Conference

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Several studies have suggested a significant relationship between finger length and aspects of personality. In this study the ratio between second and fourth digit lengths, known as digit ratio, was correlated with sensation seeking and Internet self-efficacy. In addition the relationship between the fourth and fifth digits, i.e. the little finger and ring finger, and these two constructs was also examined. No significant relationship between sensation seeking and digit ratio was observed but, in males, significant correlations between digit ratio and Internet self-efficacy were found. The implications for IT education are discussed.

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“…Biological support includes increased testosterone levels in 6-10 year old autistic children (Tordjman, Ferrari, Sulmont, Duyme, & Roubertoux, 1997) and the sexual dimorphism of decreased 2nd to 4th digit ratio in males (Manning, Stewart, Bundred, & Trivers, 2004), also decreased in autism (Manning et al, 2001), and found to be correlated with fetal testosterone levels (Lutchmaya et al, 2004).…”

Section: Extreme Male Brain Theorymentioning

confidence: 99%

A Review on the Cognitive Neuroscience of Autism

Koyama

2009

Act Nerv Super

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With increased recognition in the media, heightened prevalence, and advances in research technologies, investigation into the causes of autism has broadened in recent years. Studies at the molecular, structural, and behavioral levels have resulted in significant findings, linking autism to qualitative differences in neurological function and an alteration of early development. Familial aggregation of autism demonstrates a strong genetic factor, although genetics can not completely account for its pathogenesis. Studies show autism having one of the most complex pathologies among neurodevelopmental disorders. Future studies applying sophisticated methodologies in new areas may shed light on current mysteries surrounding the disorder.

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Sex and ethnic differences in 2nd to 4th digit ratio of children

Cited by 242 publications

References 14 publications

Characteristics of finger indices of hand 1D:3D and 2D:4D in dependence on gender and type of the constitution

Characteristics of finger indices of hand 1D:3D and 2D:4D in dependence on gender and type of the constitution

Finger Length Digit Ratio and Gender Differences in Sensation Seeking and Internet Self-Efficacy

A Review on the Cognitive Neuroscience of Autism

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