Research on developmental sequences of grammar
1973 Dulay & Bert 1974 Bailey, Madden, & Krashen 1974 Dulay & Bert 1975 Cancino, Rosansky, & Schumann 1975 Perkins & Larsen-Freeman 1976 Larsen-Freeman 1976 Rosansky 1977 Hyltenstam 1981 Felix 1982 Dulay, Bert, & Krashen 1984 Ellis 1984 Littlewood 1984 Pienemann 1984 Wode 1986 VanPatten - Second language acquisition research and the learning-teaching of Spanish 1987 VanPatten 1987 Weinert 1988 Ellis 1988 Harley 1989 Ellis 1989 Pienemann 1990 Ellis 1991 Larsen-Freeman & Long 1993 Cook 1993 Lightbown & Spada