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Finger Length Ratio and Autism

BassFace

There have been several studies that show that the 2D:4D ratio (the length of your index finger divided by the length of your ring finger) is correlated with levels of prenatal testosterone. People whose ring finger is longer are more likely to have developed characteristics associated with higher testosterone e.g. athleticism, better spatial awareness, more analytic personality, worse social skills. Most men have a lower ratio than most women.

Some studies are also suggesting its also a predictor of adhd and autism. 

I am fascinated, especially because it doesn't work for me because I have a mutation that means it's extremely different on each side haha.

It'd be cool if people could measure it on themselves and post on here so I could see if there actually is a link with autism. Obviously it won't be very accurate/scientific but I thought it'd be interesting anyway. 

Parents

  • I think someone smoked to much, but many of my hypothesis sound like that to people too Smiley

    so I will humour you

    BassFace said:
    athleticism, better spatial awareness, more analytic personality, worse social skills.

    that's me better than 95% of other man around, they all non-autistic, except one granpa

    and that ratio for me is 7.5:8

    are you aware how Fibonacci series is present everywhere in nature ? starting with broccoli

    maybe it's something like that

  • in reply to Mariusz

    lol I don't think they were smoking crack. There is clear evidence that the average ratio for men is lower than for women, so it is at least plausible that it correlates with stereotypically male/female characteristics due to different levels of sex hormones.

    "The normal range of 2D: 4D ratios among males and females have been reported to be 0.947±0.029 and 0.965±0.026, respectively" - www.frontiersin.org/.../full

    But you are right to be sceptical. As a maths student I get a bit irritated by the whole "Fibonnacci is everywhere" thing - you will always find patterns if you are flexible enough about what you include/how you count.

    7.5/8 is 0.94 for you. Very slightly lower than average.

    My ratio is 0.96 on the left (so also very slightly lower than average) and 1.08 on the right (but that is only due to brachymetacarpia...).

    The evidence doesn't convince me yet Laughing

  • in reply to BassFace

    i like math

    i never followed the fibonaci series:P

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