[MidB] Leo, a preschool student, often covers his ears, hits…

[MidB] Leо, а preschооl student, often covers his eаrs, hits his heаd, and makes loud vocalizations during group activities. He rarely responds to his teacher’s directions. A physician later diagnoses Leo with hearing loss and prescribes hearing aids. After receiving them, Leo begins responding appropriately to classroom instructions. What type of antecedent intervention does this scenario illustrate?