[U5Q] Rachel, a behavior analyst, is working with Leo, a lea…
Rachel, a behavior analyst, is working with Leo, a learner who doesn’t use vocal speech but reliably imitates hand movements. While walking past a fire station, they hear a loud siren. Rachel models the sign for “siren,” and Leo imitates it. She responds with a smile and thumbs up. Later, during a session when Rachel plays a siren sound recording, Leo independently signs “siren.” What stimulus control transfer procedure is Rachel using?