Reinforcers must be valued, preferred and individualized. What may be extremely motivating for one student may be entirely useless for another.
Observe the student. What kinds of activities does he or she seek out? What objects or events are presently serving to reinforce his or her behavior?
Ask the student. When designing a plan to modify behavior, give the student a list of choices and ask what he or she would like to try to earn.
Student Reinforcement Inventories
Free & Inexpensive Incentives for Students