Intervention intends to help fulfill these individual needs: 

Anticipation​

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What information does the Intervenor need in order to ensure that the person is aware of what is going to happen, whether immediately or in the future?

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Motivation

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​What information do Intervenors need provided to give the person encouragement?  What are the person’s goals?  What adaptations to the environment are necessary based on the person’s level of sight, hearing and cognitive ability?

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Communication

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How will the Intervenor communicate with the person?  What are their preferred methods of communication?  How will the Intervenor ensure that the person has opportunities for expressive communication?

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Confirmation​

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What information can the Intervenor provide to ensure that the person has understood what effect their actions have had?  How will the Intervenor let the client know how successful they had been?

Intervention is not just a set of skills that can be easily learned.  It is a process that must vary to meet the individual needs and abilities of each person.  Successful Intervenors are those who understand their role and who have not only the necessary skills but also the knowledge, training and experience that ensure their effectiveness.