the whole idea of regression to the mean in regard to genetics is nonsense

[Deleted member 22063]

i keep seeing this around and idk enough about statistics to articulate this properly but i knew immediately it was misleading in how it's often brought up

it's like viewing it at the macro level and assuming people's genetics incline them to be population average, so under that reasoning a 6'10 outlier procreating with a 6'5 woman, if they had enough children, these kids would average out to being like 5'10 (US avg)

in reality a person who is 6'10 isn't some massive outlier except on the macro level, it's relative to their individual genetics, the average height for someone with their genes is more likely to be like 6'6 rather than 5'10 so their kids if they had enough would be on average 6'6 assuming their partner had similar genes

it's the same in regard to IQ. a person with 150 IQ is only a massive outlier at the population level but relative to their genes their siblings would average out to like 130 and not 100 assuming they had enough of them and their kids would regress to 130 and not 100 assuming their partner was comparable.

if regression to the mean was a thing in the way people use it then animal husbandry would not exist.

 

[Deleted member 21340]

regression towards the mean never made sense in regards to genetic inheritance/expression to me
if two tall individuals have a child it's stated their child will regress to the mean, despite having taller than average parents
does that also mean the second generation of children will also regress to the mean ie be shorter than both parents and grandparents
will this repeat and repeat till theyre eventually average height? does it ever stop

 

[Deleted member 22063]

regression towards the mean never made sense in regards to genetic inheritance/expression to me
if two tall individuals have a child it's stated their child will regress to the mean, despite having taller than average parents
does that also mean the second generation of children will also regress to the mean ie be shorter than both parents and grandparents
will this repeat and repeat till theyre eventually average height? does it ever stop

i think the kids of the tall parents regress to the average of whatever their genetics incline and their descendants eventuaally get shortert it's because they're statistically unlikely to have kids with someone with comparable height genes because tall people are outliers

on a population wide level enough children born will eventually average out to the population mean. some people have kids with tall people but for every person having kids with a tall person there is someone having kids with a short person so the average remains the same at the macro level but not for individual people

maybe im speaking nonsense but im 99 percent sure that's how it works

 

[Deleted member 21340]

i think the kids of the tall parents regress to the average of whatever their genetics incline and their descendants eventuaally get shortert it's because they're statistically unlikely to have kids with someone with comparable height genes because tall people are outliers

on a population wide level enough children born will eventually average out to the population mean. some people have kids with tall people but for every person having kids with a tall person there is someone having kids with a short person so the average remains the same at the macro level but not for individual people

maybe im speaking nonsense but im 99 percent sure that's how it works

idk i feel like its easier to digest via iq considering both parents will be somewhat matched
the kids will regress to a mean of their genetics incline and population mean
so regression to the mean states if two parents had an iq of 130 and the mean of the population/family that the parents stem from is 100 the average iq of the offspring will fall around 118 if we use the breeders equation of r=h^2 x s
but if the offspring moved to a location completely isolated and separate to the population with a mean of 100 the second generation will also have a mean of 118 (we're assuming they had incest here) bc the new mean is 118 but i dont get this on a genetic level
why doesnt their old population mean effect the future offspring anymore

its fucking retarded and hurts my brain to think about
ive just never been able to fully comprehend it and probably never will