Length of ring fingers & correlates with sexual attraction.

Various studies have shown that babies exposed to higher levels of testosterone when developing in the uterus have longer ring fingers as adults, and higher levels of oestrogen typically result in longer pointer fingers. However, testosterone & oestrogen levels also affect the rest of the body, including a person’s physical appearance. The ratio between the length of the index and ring fingers has been found to be a good indication for a variety of social and economic factors, thought to be directly or indirectly related to the effects of the prenatal testosterone. These photographs are part of a study on beauty and sexual attraction.

In 2010 a Meta-analysis studyby researchers from the University of Ontario, Penn State, and the Centre for Addiction and Mental Health found that the second to fourth finger length ratio (2D:4D) serves as an indicator of sexual orientation. The study included 1.618 heterosexual men, 1.693 heterosexual women, 1.503 gay men, and 1.014 lesbians.

In addition to identifying the normative heterosexual sex difference in 2D:4D for both hands, the researchers found that heterosexual women had higher (more feminine) left- and right-hand 2D:4D than did lesbians. However… the researchers found NO difference between heterosexual and gay men (though moderator analyses by the researchers suggested that ethnicity explained some between-studies variation in men).


MORE  FINGER & DIGIT RATIO REPORTS ARE AVAILABLE AT:

http://www.handresearch.com/news/hands-in-the-news.htm

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Finger length measurements.

Are you tall, short, or got a small head?
Don’t forget to take a look at your fingers!

Recently Roger Dobson – author at MailOnline.co.uk presented an informative article with the title: ‘Tall, short – or got a small head? Here’s what your physique reveals about your health’. The article describes how various body dimensions – varying from body length to foot size – can indicate useful information about your risk of developing certain conditions, varying from cancer through to dementia & heart disease.
The continuation presents a quote from Roger Dobson’s article about the 2D:4D digit length ratio – the hand characterstic that has become very well-known in the past few years through the work and the 2 books of ‘the finger’ Professor John T. Manning

Roger Dobson wrote in his article about the hand:

“IF YOU HAVE LONG FINGERS

Autism and ADHD, mental illness/depression

A range of disorders has been linked to the length of fingers, and in particular the ratio between index and ring fingers. The ratio is thought to be a marker of what was happening hormonally in the womb when the foetus developed.

It’s thought a relatively long ring finger is a sign that the foetus was exposed to higher levels of the male hormone testosterone, while a relatively long index finger is a marker of the female hormone, oestrogen.

Conditions associated with a long ring finger compared to the index include autism and ADHD. Those associated with a longer index include depression.

Males, who are more likely to develop autism and ADHD, tend to have a longer ring finger relative to their index finger.

Exposure to certain hormones might increase or reduce the risk of certain conditions and traits.

‘It has been suggested that autism may arise as the result of exposure to high concentrations of prenatal testosterone,’ say researchers at Liverpool University.”

Digit ratio: A Pointer to Fertility, Behavior and Health

Digit Ratio: A Pointer to Fertility, Behavior and Health

Book Review:

Digit Ratio: A Pointer to Fertility, Behavior and Health – author: John T. Manning

Publisher: Rutgers University Press 2002

Review by Michael Mills, Psychology Department, Los Angeles.

Michael Mills writes about John Manning’s book Digit Ratio:

“Take a look at your right-hand. Which of your fingers is longer: your ring finger, or your index finger? Surprisingly, a passing stranger who noticed a difference in length between these two fingers (and who had handy a copy of John Manning’s book Digit Ratio: A Pointer to Fertility, Behavior and Health) might infer some very personal characteristics about you. With no more data than that gleaned from a passing glance at your hands, a stranger might infer whether you are likely to have homosexual inclinations, are highly fertile, may eventually suffer from a heart attack or breast cancer, have musical aptitude or sporting prowess, and a surprisingly long list of other characteristics.

…Females typically have index and ring fingers of about the same length. The ratio of index finger length to ring finger length is called the “2D:4D digit ratio,” or more simply, the “digit ratio.” Manning reports that, for males, the index finger is generally about 96 percent of the length of the ring finger, which gives an average digit ratio for males of .96.

…Manning devotes separate chapters to explore the relationship between digit ratio and a variety of characteristics, including assertiveness and attractiveness (chapter 3), reproductive success (chapter 4), hand preference, verbal fluency, autism, and depression (chapter 5), health and disease (chapter 6), homosexuality (chapter 7), musical aptitude (chapter 8 ) and sports aptitude (chapter 9). A brief summary Manning’s findings (some of which he notes are quite preliminary) is presented in the table below.”

 

Low 2D:4D ratio

High 2D:4D ratio

Males

* More fertile
* Higher lifetime reproductive success
* More aggressive and assertive
* Greater proclivity toward homosexuality/bisexuality
* Higher musical and sports aptitude
* Lower SES (?)

* Higher risk of early heart disease

Females

* Greater proclivity toward homosexuality/bisexuality
* More aggressive and assertive

* More fertile
* Higher lifetime reproductive success
* Higher risk of breast cancer