Resources to Support Challenging Child Behavior

Introducing New Foods
Situation: 

My son will not try any new foods. When I even ask him to just take a bite of something different he starts yelling. How can I get him to try something new?

Intervention Strategies for Self-Injurious Behaviors
Situation: 

I am a graduate student doing a case study on a 6-year-old boy with autism. His mother reported that he often causes harm to his own body frequently. What are some strategies to reduce self-injurious behaviors?