Longitudinal Twin Study of Reading Difficulties (RD) and Attention Defecit Hyperactivity Disorder (ADHD)
This study is unique in that it is the first to assess these longitudinal relations and outcomes within a genetically informative sample selected specifically for RD and/or ADHD symptoms.
Our purpose
is to learn more about the causes of stability and change in reading disability,
as well as about some of the consequences. Twins who participated in the Colorado
Learning Disabilities Research Center (CLDRC) approximately five years
ago are being contacted for this follow-up research study. Assessment
includes tests of: