What is my ratio? Photocopy

Braemar wrote:Hello Martijn,

Measured according to your picture, these are my results:

Right hand:  around the 0.97 mark
Left hand: around 0.95

What does upper side of the normal range mean according to you?

Braemar wrote:I agree!

This was helpful, thanks.

Further: I read that self-measured 2D-4D is often higher than with more precise/digital methodies.
So I think there is some confusion about what is average, depending on the methode a research is using.

Well... yes, internet studies involving large populations have suggested that 'self-reported digit ratios' tend to produced higher values in large groups; however, one can wonder regarding the cause of this effect - I don't think that one should translate those results into the conclusion that (non-expert) self-reports are always higher than measurements made by (expert) researchers.

...I suspect this effect might be partly explained as follows: non-experts might be inclined to make less precise measurement, which could more easily lead to concluding that the length of the both fingers is close to equal - which might lead to 1.0 measurements in hands where the ratio is actually 0.99 or 0.98 ... or 1.01 or 1.02 - but the amount of people falling in the 1.01 & 1.02 category is much smaller than the 0.98 & 0.99 category (see picture below).