Final answer:
Dorothy's use of a sticker chart to encourage her daughter's homework completion is an example of behavior modification, a method of parental involvement in education that uses positive reinforcement.
Step-by-step explanation:
Dorothy is practicing behavior modification with her daughter by using a sticker chart as a form of positive reinforcement. This approach falls within the domain of parental involvement in education.
By listing and rewarding the completion of homework tasks, Dorothy is helping her daughter to develop better study habits and complete her homework, which is an example of creating a token economy to increase desirable behaviors.
Behavior modification techniques such as this are part of operant conditioning, a method often used both in the classroom and at home to encourage children to adopt more socially acceptable behaviors.