Figure 1.
Cholesky Model of ADHD Symptoms over Three Times. A: additive genetic influence. C: shared environmental influences. E: non-shared environmental influences. MZ: monozygotic twins. DZ: dizygotic twins
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.