“…Other studies reporting the use of reinforcement procedures to bolster grammaticality also appeared around this time (e.g., H. B. Clark & Sherman, 1975;Garcia, 1974;Garcia & Batista-Wallace, 1977;Garcia, Guess, & Byrnes, 1973;Hester & Hendrickson, 1977;Heward & Eachus, 1979;Martin, 1975;Sailor, 1971;StevensLong & Rasmussen, 1974) and during the ensuing decades (e.g., Charlop, Schreibman, & Thibodeau, 1985;Chase, Ellenwood, & Madden, 2008;Greer & Yuan, 2008;Hernandez, Hanley, & Ingvarsson, 2007;Secan, Egel, & Tilley, 1989;Whitehurst & ValdezMenchaca, 1988;Wulfert & Hayes, 1988).…”