Patrick, an adult with intellectual disability, lived in a group home and worked in a community job. A problem that Patrick exhibited in the group home was refusal to complete training activities, such as grooming and household tasks. He was most likely to refuse when younger staff made requests to him. When older staff made requests, he was typically compliant. Because requests from younger staff appeared to be a reliable antecedent to the problem behavior, the supervisor decided to have only the older staff work with Patrick. What is the problem with this antecedent intervention?