BurchinalM. R.Peisner-FeinbergE.PiantaR.HowesC. (2002). Development of academic skills from preschool through second grade: Family and classroom predictors of developmental trajectories. Journal of School Psychology, 40, 415–436.
2.
DunnL. M.DunnL. M. (1997). Peabody Picture Vocabulary Test (3rd ed.). Circle Pines, MN: American Guidance Service.
3.
HartB.RisleyT. R. (1995). Meaningful differences in the everyday experience of young American children. Baltimore, MD: Paul H. Brookes.
4.
HoffE. (2006). How social contexts support and shape language development. Developmental Review, 26, 55–88.
5.
LeonardL. B. (1991). Specific language impairment as a clinical category. Language, Speech, and Hearing Services in Schools, 22, 66–68.
6.
ZimmermanI. L.SteinerV. G.PondR. E. (2002). Preschool Language Scale (3rd ed.). San Antonio, TX: The Psychological Corporation.