Vaniver comments on 2014 Less Wrong Census/Survey - Less Wrong

88 Post author: Yvain 26 October 2014 06:05PM

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Comment author: Vaniver 27 October 2014 01:39:21AM 5 points [-]

But at least the significant difference between left and right hand remains.

It is common for them to be different; that's why the survey asks for each hand separately. Inter-rater reliability (given the same scan) for this measurement is in the r=.9 range, if I remember correctly, so don't feel that bad about it being variable; the underlying quantity is actually difficult to measure (but meaningful nonetheless).

Comment author: Gunnar_Zarncke 27 October 2014 08:08:26AM 1 point [-]

the underlying quantity is actually difficult to measure (but meaningful nonetheless).

I don't doubt that the measure is meaningful. The influence is surely real. The question is rather whether anything meaningful can be derived on the individual level.