Sue Thomas, Gerry Gabrielle and Myles Bingham coauthored an article on using the HALT strategy. It is an acronym that encourages caregivers to stop and question where a negative behaviour might be coming from. It identifies four basic needs that, left unmet, could lead to a behaviour issue. They are using this strategy with teenagers, but I see it applying to a broad range of ages and abilities.
For more information on how they are using the HALT strategy scroll down the May 2016 edition of the Autism Around Alberta newsletter here.