So I was wondering what the ratio of everyone's index to ring fingers is? Is your index finger larger than the ring, equal or smaller. I'm sure some of you have heard this and the science behind it. My index is slightly smaller. Just outline your hand on a piece of paper and then measure those two fingers. I promise it is not a trick and may or may not have something to do with our situation. It's still in hypothesis stage though.

My index finger is shorter as well.

Bostonians can't take this test, all we have is middle fingers! Hugs, Devlyn

You have to be sure to measure from the midline of the bottom crease where your finger joins your hand, to the tip.  Divide the index finger length by the ring finger length.

Mine fell right exactly on what they had as the mean for MTFs.

Well, there ya go. Scientific proof!

This is the first I've heard of it. What are these ratios you speak of?

Quote from: Shodan on March 11, 2013, 06:54:48 PM
This is the first I've heard of it. What are these ratios you speak of?

It has to do with the amount of Estrogen, or Testosterone, that an embryo is exposed to - it effects the length of the index (?) finger, I believe.

Think that summarizes it correctly.

Mine are equal

What does that mean?

Hunh. Gonna have to get a ruler.

So. After printing out a paper ruler and some careful measuring, I end up getting a ratio of 0.963, which according to Wikipedia is right about average for women.  I'm guessing that's pretty standard for Trans Women?

"Comparison between right-handed individuals revealed that the right-hand 2D:4D in MFT is higher than in control males but similar to that observed in control females."

It looks to me like the mean for control males is 0.955 and MTF (and control females) is 0.970

N was about 60 for each group, which include FTMs.

Schneider HJ, Pickel J, Stalla GK (February 2006). "Typical female 2nd-4th finger length (2D:4D) ratios in male-to-female transsexuals-possible implications for prenatal androgen exposure". Psychoneuroendocrinology 31 (2): 265–9. doi:10.1016/j.psyneuen.2005.07.005. PMID 16140461.

Quote from: Orihime on March 11, 2013, 07:13:40 PM
"Comparison between right-handed individuals revealed that the right-hand 2D:4D in MFT is higher than in control males but similar to that observed in control females."

It looks to me like the mean for control males is 0.955 and MTF (and control females) is 0.970

N was about 60 for each group, which include FTMs.

Schneider HJ, Pickel J, Stalla GK (February 2006). "Typical female 2nd-4th finger length (2D:4D) ratios in male-to-female transsexuals-possible implications for prenatal androgen exposure". Psychoneuroendocrinology 31 (2): 265–9. doi:10.1016/j.psyneuen.2005.07.005. PMID 16140461.

English?

I have longer ring fingers, as does my slightly broader female cisfriend, and my mom on one hand. The one's on my left hand are closer though.

Quote from: MaidofOrleans on March 11, 2013, 07:23:35 PM
English?

Basically, women and Trans Women have ring and index fingers that are closer in length than men do.

Oh ok thanks for clarifying 

I'm assuming one measures on the inside of the hand... 'cause my outside crease goes down half an inch further on the ring side. And that gives me an average in the 0.88 range.

Science sez: 2 15/16" Index, 3" Ring. Ratio 0.979. So there's that.

Seems like every time I turn around I find another confirmation: "Yes, you were bathed in estrogen in the womb. Yes, you are transgender. No, you're not crazy."  Is it similar for all of you?

Yeah it's not an exact science but on the whole men tend to have longer index fingers that is thought to be an evolutionary desirable trait for throwing things like spears to kill food and women have smaller ring index fingers thought to be an engineered trait made by Debeers to make engagement rings prettier. JK lol Basically men have longer index fingers compared to ring fingers and women the opposite, smaller index fingers. There is thought to be some relation to MTFs. It's not a science though so if this doesn't apply please don't make it like you are not trans or whatever. The on interesting thing is gay men tend to have the longest index fingers of all test subjects in the studies that have taken place. It all has to due with exposure to T in the womb.

cis-men have shorter index fingers than ring fingers. Women have them about equal. Turns out there are a lot of things they are trying to correlate. But as Joanna says just because it doesn't apply to you doesn't mean you are not trans, or that you have/don't have the myriad of other things associated with the ratio. It's just a correlation.

Here's more on the subject, it comes around frequently.

https://www.susans.org/forums/index.php/topic,125427.msg1030218.html#msg1030218
https://www.susans.org/forums/index.php/topic,32265.msg319059.html#msg319059
https://www.susans.org/forums/index.php/topic,71233.msg486210.html#msg486210
https://www.susans.org/forums/index.php/topic,76552.msg525773.html#msg525773
https://www.susans.org/forums/index.php/topic,118150.msg908745.html#msg908745
https://www.susans.org/forums/index.php/topic,32126.msg227909.html#msg227909

Quote from: MaidofOrleans on March 11, 2013, 06:58:45 PM
Mine are equal

What does that mean?

Mine also. At least the middle finger is outstanding 

Theoretically, if I remember well, equal fingers, or a slightly longer index finger, are normally found in females.

A longer ring finger is normally found in females.

I didn't read all that much about this and it was a long time ago, but I think there's some point in foetal development where rates of sex hormone exposure have an influence on the length of those fingers. I don't think they mentionned transsexuals, but I think they were disappointed because they didn't really find female lengths in gay men or male lengths in lesbian women, shattering another hope of an explanation of homosexuality.