So, if heritability goes up with age, why doesn't Polderman database show this? http://match.ctglab.nl/#/specific/age_groups …pic.twitter.com/eO7YWQLLDe
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
Could be a reliability issue. Many full IQ battery twin studies of the young, few of old people.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.