Pretending that IQ researchers ignore group factors. http://www.sciencedirect.com/science/article/pii/S2211949317300030 …pic.twitter.com/xaA15Ocppc
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
You do realize that within group and between group heritability are not the same? That post is mostly concerned with the latter.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.