/sci/ - Science & Math

>>11774674
>Normally I hear people talking about the MRI of brain being different(male and females having different brains, i.e., trans having the opposite brain). I'm not sure if that's real or bullshit.
It's mostly bullshit if you're talking about the upenn study

A very small percentage of brains could be identified male, and a smaller percentage identified female
Sex couldn't be determined by connectome in the vast majority of brains

Pic related

>>11373998
>>11374016
wrong

>>11140331
There are some differences in average brain size that I suspect come down to differences in overall physical size.
But then you have shit like the Penn state connectome study overblowing a statistic where >90% of the sample overlaps.
The high-level methodology is an abstract form of the fallacy known as "affirming the consequent"
1) observe some difference in behavior
2) hunt for any physical difference, no matter how slight or rare
3) claim that what we found in (2) is necessarily correlated with (1)

>>11129002
>A behavioral study on the entire sample, of which this imaging study is a subset...
>These behavioral studies are carried out at a denser age sampling, which is not possible for the imaging studies because the sample size in the subgroups will be too small to identify meaningful differences.
nope, more like the average of cherrypicked samples
way to blow yourself out with your own image, brainlet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4785904/
>The authors did not report the degree of overlap, but the reported T statistics and degrees of freedom indicate that the sexes overlapped by nearly 90% (figure 2d,e; see also [68]).