Links to extra material from Diana Leafe Christian:
Working Effectively with Especially Challenging Behaviors, Part 1
Working Effectively with Especially Challenging Behaviors, Part 2
Working Effectively with Especially Challenging Behaviors, Part 3
Working Effectively with Especially Challenging Behaviors, Part 4
Working Effectively with Especially Challenging Behaviors, Part 5
Working Effectively with Especially Challenging Behaviors, Part 6
Working Effectively with Especially Challenging Behaviors, Part 7
Working Effectively with Especially Challenging Behaviors, Part 8