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A comment on Teens Aren’t Partying Anymore. Parent comment

Re:Teens Aren’t Partying Anymore by temp-dude-87844 on Wednesday January 03, 2018 @09:55AM (#16061425)
Isn't "~50% heritable" a different way of stating that the results are indistinguishable from a coin flip? That doesn't sound too hereditary.
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Re:Teens Aren’t Partying Anymore by an3waccount on Wednesday January 03, 2018 @10:16AM (#16061603)
No? Lets say we intro-/extroversion is either heritable (with prob .5) or random(with prob .5). If both of your parents are introverted you have a 50% chance of inheriting the introversion of your parents or a 50% chance at a coinflip, which gives us 75% for introversion and 25% for extraversion.
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Re:Teens Aren’t Partying Anymore by nils-m-holm on Wednesday January 03, 2018 @10:10AM (#16061547)
I'd rather interpret it as "50% are fixed (nature) and the other 50% are a coin flip (nurture).
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Re:Teens Aren’t Partying Anymore by c8d3f7b49897918 on Wednesday January 03, 2018 @10:08AM (#16061521)
No:

https://en.wikipedia.org/wiki/Heritability

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Re:Teens Aren’t Partying Anymore by extra88 on Wednesday January 03, 2018 @10:07AM (#16061516)
No, because it's not a binary choice. There are degrees to which people are open to new experiences or extraverted.
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Re:Teens Aren’t Partying Anymore by aaron-santos on Wednesday January 03, 2018 @10:25AM (#16061701)
I took it to mean a covariance of 0.5.
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