Re:Genetic correlation of various human qualities
by GolDDranks on Thursday January 07, 2021 @09:04PM
(#25680534)
What do the negative vs. positive correlations mean here? I mean, you can smoke more or less, so that's clearly a scalar variable, but how are, for example, "non IQ genes" a scalar variable that can have a positive or negative correlation with smoking?
Re:Genetic correlation of various human qualities
by nomy99 on Thursday January 07, 2021 @09:30PM
(#25680757)
I think, and I am no expert in this.. but a genetic correlation is between two traits.
Negative genetic correlation: if X increases then Y decreases
Positive genetic correlation: if X increases so does Y
I think each trait on the graph should be paired with educational attainment as a second trait.
So: GeneticCorrelation(Cigarettes, EDUCATION) -> Negative
GeneticCorrelation(Longevity, EDUCATION) -> Positive
My take is this: The chart shows the relationship between the genes responsible for higher education X and {insert trait} = Y, where X is further split into IQ and non-IQ..
"Each row is an outcome. The orange dot signifies how strong the genetic correlation is for that outcome from genes not related to IQ. The blue dot is the correlation with genes that correlated with IQ. The grey dot is the correlation of educational attainment with the outcome. When theres an asterisk, it means there was a significant difference between the IQ based genetic correlation and the non IQ based, so you can infer how much of a role IQ plays for that outcome as compared to non IQ related genes.
So take cigarettes per day for example. You can see that the non IQ genes were more correlated with cigarette usage than IQ genes, which tells us a little but about what mediates that outcome."