In the context of oppositional defiant disorder and comorbidity with other disorders, researchers often conclude that ODD co-occurs with an attention deficit hyperactivity disorder (ADHD), anxiety disorders, emotional disorders as well as mood disorders. Those mood disorders can be linked to major depression or bipolar disorder. Indirect consequences of ODD can also be related or associated with a later mental disorder. For instance, conduct disorder is often studied in connection with ODD. A strong comorbidity can be observed within those two disorders, but an even higher connection with ADHD in relations to ODD can be seen. For instance, children or adolescents who have ODD with coexistence of ADHD will usually be more aggressive, will have more of the negative behavioral symptoms of ODD and thus, inhibit them from having a successful academic life. This will be reflected in their academic path as students.