Digit ratios

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I've read in several articles that digit ratios (ring finger significantly longer than index finger) can be indicative of autism. I am wondering how many people have read about this theory, and if this is generally universal? I am also adding a poll just for fun.

I was diagnosed with classic autism, but my finger is about two millimetres shorter than my index finger, so pretty much the same length (although my ring finger looks almost a centimetre shorter due to the way they are situated (measured them with a ruler for accuracy...yes, I need a life!). Anyway, I don't fit into this typical digit ratio for autism, but I do have moderate-functioning classic autism. So, what about you?

I am putting options in my poll for people professionally diagnosed with classic autism, aspergers, pddnos, as well as for those who are self-diagnosed, and for nts. It'll be long but I am curious of the breakdowns!


Edit:
I am now curious to know: if your ring finger is longer than your index finger and you have been diagnosed with an ASD, are you male or female?

I have not read conclusive information on digit ratios. My fourth digit is only 2mm longer than my index finger, which is 80mm, so I voted 'about the same'. Interesting poll, I hope you get a good response.

I have not been professionally diagnosed.

These are my finger lengths measured from the edge of the palm of my hand:

Left hand:

• Index finger: 75mm
• Ring finger: 80mm

• Index finger: 74mm
• Ring finger: 80mm

I doubt the theory is true, but to feed your curiosity...

Index Finger: 71mm
Ring Finger: 73mm
For the right hand.

I've heard theories about the difference in lengths of the ring finger vs index finger having to do with the amount of testosterone in the womb, so males tend to have longer ring fingers while females tend to have longer index fingers.

As there is a huge difference in proportion of people being diagnosed, I could see this easily having a bias from that.

However, personally, female, aspie, ring finger longer than index finger. Back in high school, when we were studying this, I was one of two females in the class who could claim that.

My ring finger is just slightly longer than my index finger. By slightly, I mean by about a millimeter or two. Hardly even noticeable.

Right hand index: 73 mm
Right hand ring: 80 mm
Left hand index: 73
Left hand ring:77

average ratio of left and right: 0.932 (normal is between 0.985 to 0.995)

As bizarre as it sounds, this digit ratio thing has some science behind it. Seems speculative to me, but it is being researched.


http://fingerlengthdigitratio.wordpress.com/2008/10/01/finger-length-related-to-autism-low-digit-ratio-094/

Here is the scientific paper on it:

http://www.autismresearchcentre.com/doc ... g_etal.pdf


It is probably a case of: "this is frequently observed, but not universal". At least...it CAN'T be universal because it doesn't apply to me, and I DEFINITELY have autism.

One interesting thing that might be note-worthy, however, is that men usually have a longer ring finger than index finger. Since more men/boys are still diagnosed with autism, perhaps this is ONE of the reasons they have come to this conclusion. That being said, I am now interested to know: if your ring finger is longer than your index finger and you have been diagnosed with an ASD, are you male or female?

Edit: I forgot to add: thank you all for your contributions thus far!!

my index fingers are about 1/4" shorter then my ring fingers.

I am NT and I do have the ratio that many autistics do (long ring finger).

I'm a woman, so it's unusual, but it's the norm for NT men as well as autistic men.

Ring finger is about a cm longer than index finger.

I probably have a good amount of testosterone (which I would assume causes this). I'm male and have a very deep voice/ lots of body hair. Even so my index finger is longer than my ring finger, at least on my right hand. On my left hand it's very hard to tell which is longer.