Young children learn language from the speech they hear. Previous work suggests that greater statistical diversity of words and of linguistic contexts is associated with better language outcomes. One potential source of lexical diversity is the text of picture books that caregivers read aloud to children. Many parents begin reading to their children shortly after birth, so this is potentially an important source of linguistic input for many children. We constructed a corpus of 100 children’s picture books and compared word type and token counts in that sample and a matched sample of child-directed speech. Overall, the picture books contained more unique word types than the child-directed speech. Further, individual picture books generally contained more unique word types than length-matched, child-directed conversations. The text of picture books may be an important source of vocabulary for young children, and these findings suggest a mechanism that underlies the language benefits associated with reading to children.
BakerL.ScherD.MacklerK. (1997). Home and family influences on motivations for reading. Educational Psychologist, 32, 69–82.
2.
BradleyR. H.CorwynR. F.McAdooH. P.García CollC. (2001). The home environments of children in the United States Part I: Variations by age, ethnicity, and poverty status. Child Development, 72, 1844–1867.
3.
BusA. G.van IJzendoornM. H.PellegriniA. D. (1995). Joint book reading makes for success in learning to read: A meta-analysis on intergenerational transmission of literacy. Review of Educational Research, 65, 1–21.
4.
DecknerD. F.AdamsonL. B.BakemanR. (2006). Child and maternal contributions to shared reading: Effects on language and literacy development. Journal of Applied Developmental Psychology, 27, 31–41.
5.
DellG. S. (1986). A spreading-activation theory of retrieval in sentence production. Psychological Review, 93, 283–321.
6.
DickinsonD. K.GriffithJ. A.GolinkoffR. M.Hirsh-PasekK. (2012). How reading books fosters language development around the world. Child Development Research, 2012, Article 602807. Retrieved from http://www.hindawi.com/journals/cdr/2012/602807/
7.
FarrantB. M.ZubrickS. R. (2012). Early vocabulary development: The importance of joint attention and parent-child book reading. First Language, 32, 343–364.
8.
FletcherK. L.CrossJ. R.TanneyA. L.SchneiderM.FinchW. H. (2008). Predicting language development in children at risk: The effects of quality and frequency of caregiver reading. Early Education and Development, 19, 89–111.
9.
GriffinZ. M.FerreiraV. S. (2006). Properties of spoken language production. In TraxlerM. J.GernsbacherM. A. (Eds.), Handbook of psycholinguistics (2nd ed., pp. 21–59). London, England: Elsevier.
10.
HartB.RisleyT. R. (1995). Meaningful differences in the everyday experiences of young American children. Baltimore, MD: Brookes.
11.
HayesD. P. (1988). Speaking and writing: Distinct patterns of word choice. Journal of Memory and Language, 27, 572–585.
12.
HayesD. P.AhrensM. G. (1988). Vocabulary simplification for children: A special case of ‘motherese’?Journal of Child Language, 15, 395–410.
13.
HessC. W.SeftonK. M.LandryR. G. (1986). Sample size and type-token ratios for oral language of preschool children. Journal of Speech, Language, and Hearing Research, 29, 129–134.
14.
HillsT. T.MaoueneJ.RiordanB.SmithL. B. (2010). The associative structure of language: Contextual diversity in early word learning. Journal of Memory and Language, 63, 259–273.
15.
HoffE. (2003). The specificity of environmental influence: Socioeconomic status affects early vocabulary development via maternal speech. Child Development, 74, 1368–1378.
16.
HoffE.NaiglesL. (2002). How children use input to acquire a lexicon. Child Development, 73, 418–433.
17.
Hoff-GinsbergE. (1991). Mother-child conversation in different social classes and communicative settings. Child Development, 62, 782–796.
18.
HuttenlocherJ.WaterfallH.VasilyevaM.VeveaJ.HedgesL. V. (2010). Sources of variability in children’s language growth. Cognitive Psychology, 61, 343–365.
19.
JonesM. N.JohnsB. T.RecchiaG. (2012). The role of semantic diversity in lexical organization. Canadian Journal of Experimental Psychology, 66, 121–132.
20.
KarrassJ.Braungart-RiekerJ. M. (2005). Effects of shared parent–infant book reading on early language acquisition. Journal of Applied Developmental Psychology, 26, 133–148.
21.
MacWhinneyB. (2000). The CHILDES Project: Tools for analyzing talk (3rd ed.). Mahwah, NJ: Erlbaum.
22.
MolS. E.BusA. G.de JongM. T.SmeetsD. J. (2008). Added value of dialogic parent–child book readings: A meta-analysis. Early Education and Development, 19, 7–26.
23.
NinioA. (2011). Syntactic development, its input and output. Oxford, England: Oxford University Press.
24.
NinioA.BrunerJ. (1978). The achievement and antecedents of labelling. Journal of Child Language, 5, 1–15.
25.
PanB. A.RoweM. L.SingerJ. D.SnowC. E. (2005). Maternal correlates of growth in toddler vocabulary production in low-income families. Child Development, 76, 763–782.
26.
PayneA. C.WhitehurstG. J.AngellA. L. (1994). The role of home literacy environment in the development of language ability in preschool children from low-income families. Early Childhood Research Quarterly, 9, 427–440.
27.
RaikesH.PanB. A.LuzeG.Tamis-LeMondaC. S.Brooks-GunnJ.ConstantineJ.. . . RodriguezE. T. (2006). Mother–child bookreading in low-income families: Correlates and outcomes during the first three years of life. Child Development, 77, 924–953.
28.
RichardsB. (1987). Type/token ratios: What do they really tell us?Journal of Child Language, 14, 201–209.
29.
RoweM. L. (2012). A longitudinal investigation of the role of quantity and quality of child-directed speech in vocabulary development. Child Development, 83, 1762–1774.
30.
ScarboroughH. S.DobrichW.HagerM. (1991). Preschool literacy experience and later reading achievement. Journal of Learning Disabilities, 24, 508–511.
31.
SénéchalM.LeFevreJ. A. (2002). Parental involvement in the development of children’s reading skill: A five-year longitudinal study. Child Development, 73, 445–460.
32.
SharifI.RieberS.OzuahP. O. (2002). Exposure to Reach Out and Read and vocabulary outcomes in inner city preschoolers. Journal of the National Medical Association, 94, 171–177.
33.
ShneidmanL. A.ArroyoM. E.LevineS. C.Goldin-MeadowS. (2013). What counts as effective input for word learning?Journal of Child Language, 40, 672–686.
34.
SnowC. E.NinioA. (1986). The contracts of literacy: What children learn from learning to read books. In TealeW. H.SulzbyE. (Eds.), Emergent literacy: Writing and reading (pp. 116–138). Norwood, NJ: Ablex.
35.
SulzbyE. (1985). Children’s emergent reading of favorite storybooks: A developmental study. Reading Research Quarterly, 20, 458–481.
36.
TomaselloM.FarrarM. J. (1986). Joint attention and early language. Child Development, 57, 1454–1463.
37.
WeislederA.FernaldA. (2014). Talking to children matters: Early language experience strengthens processing and builds vocabulary. Psychological Science, 24, 2143–2152.
38.
WeizmanZ. O.SnowC. E. (2001). Lexical output as related to children’s vocabulary acquisition: Effects of sophisticated exposure and support for meaning. Developmental Psychology, 37, 265–279.
39.
WhitehurstG. J.FalcoF. L.LoniganC. J.FischelJ. E.DeBarysheB. D.Valdez-MenchacaM. C.CaulfieldM. (1988). Accelerating language development through picture book reading. Developmental Psychology, 24, 552–559.
40.
WillitsJ. A.JonesM. N. (2015). What can children learn from 6 million words? Manuscript submitted for publication.
41.
YaroszD. J.BarnettW. S. (2001). Who reads to young children?: Identifying predictors of family reading activities. Reading Psychology, 22, 67–81.
42.
YoungK. T.DavisK.SchoenC.ParkerS. (1998). Listening to parents: A national survey of parents with young children. Archives of Pediatrics & Adolescent Medicine, 152, 255–262.
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