Justin Bieber, who was seen partying at Coachella wife wife Hailey last week, has taken to Instagram to share a defiant ... Lamar's 'Not Like Us' with a friend with many saying he did not look ...

Defiant behavior is often linked to ADHD ... What is the most effective discipline for a child with ADHD? Children with ADHD, like others, benefit from fair and consistent discipline.

And among the districts with the largest racial disparities, as much as 80 percent of the difference in days lost was attributed to suspensions for disruptive or defiant behavior ... for reform raises ...