Language Acquisition and Concept Development

Abstracts  for  CSMN  Workshop  (Aug.  14-­‐15,  2012),  University  of  Oslo   Language  Acquisition  and  Concept  Development     Interaction  pro...
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Abstracts  for  CSMN  Workshop  (Aug.  14-­‐15,  2012),  University  of  Oslo  

Language  Acquisition  and  Concept  Development     Interaction  promotes  the  acquisition  of  language  and  concepts   Eve  Clark  (Stanford)  [email protected]   Interaction   between   children   and   more   expert   speakers   plays   a   critical   role   in   displaying   how   to   use   language   in   a   variety   of   different   contexts.     Adults   rely   on   the   conventions   of   a   language   in   deciding   how   to   talk,   and   how   to   coordinate   their   talk   and   their   activities.       And   they   frame   children’s   earliest   contributions   as   they   offer   one-­‐word  comments  and  responses  in  different  settings.  I’d  like  to  focus  on  three  main   topics:     (a)   Other-­initiated   repairs.     Children   attend   to   other-­‐initiated   repairs   and   respond  to  them  from  the  earliest  stages  of  acquisition  on.    Adults  implicitly  request   such   repairs   with   side   sequences   as   they   supply   extensive   feedback   on   what   their   children  say  and  how  they  say  it.    They  generally  do  this,  as  in  (i),  in  the  utterance  that   immediately  follows  an  erroneous  child  utterance,  so  children  can  contrast  how  they   themselves   said   X   with   how   the   adult   says   X,   where   both   are   trying   to   express   the   same  intention  (Chouinard  &  Clark,  2003;  Clark  &  de  Marneffe,  2012).   (i)  Philippe  (2;1.26,  looking  at  a  small  milk  carton):                 une  petit  de  lait.                (=  ‘a-­‐fem.  little-­‐masc.  of  milk’)              Mother:        une  petite  boîte  de  lait.            (=  ‘a-­‐fem.  little-­‐fem.  box-­‐fem.  of  milk’)              Philippe:      petite  boîte  de  lait.                (=  ‘little-­‐fem.  box-­‐fem.  of  milk’)      

(b)   Word   offers   and   uptake.   Children’s   requests   for   words   for   objects   and  

events,   and   their   uptake   of   words   offered   by   more   expert   speakers:     Offers   of   new   words  are  provided  both  in  response  to  general  requests  (nonverbal  points  or  an  early   version  of  What’s  that?)  and  as  repairs  to  children’s  guesses  at  a  possible  label    (e.g.,   Goldin-­‐Meadow   et   al.,   2007;   Kelly,   2011;   Olson   &   Masur,   2011).     New   words   are   generally  presented  in  one  of  a  small  number  of  frequent  frames,  e.g.,  That’s  a/the  –––,   This  is  called  a  –––,  or  Those  are  ––  (Clark   &   Wong,   2002;   Clark   &   Estigrribia,   2011).     Children  frequently  take  up  these  offers  in  their  next  turn,  as  in  (ii):      

 

(ii)    (a)    Child  (1;7.9,  points  at  picture  of  a  kangaroo)      Mother:  Yeah.      It’s  called  a  kangaroo.  Kangaroo.      Child:  roo.        

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               (b)  Hal  (1;10.26):  What’s  this?                      Mother:  It’s  a  beaver.                            Hal:  Beaver.                                          (c)  Naomi  (2;4.5):  what’s  that?                              Mother:  that’s  the  latch  for  the  window.                              Naomi:  latch  for  the  window?    

 

 

 

   

Adult  offers  are  typically  accompanied  by  added  information  about  the  referents  of  new   words.     Such   information   commonly   includes   listing   of   parts   and   properties,   and   also   information   about   characteristic   sounds   and   movements   for   animate   objects,   and   of   functions   for   inanimate   objects.     Adults   also   provide   information   about   ontogeny,   history,   and  habitat,  along  with  comparisons  to  relevant  neighbours  within  a  domain  (see  Clark,   2007,  2010).       (c)  Coining   words.    At  times,  when  children  lack  an  appropriate  word  for  an   object   or   an   action,   they   coin   a   term   on   the   spot.     But   in   doing   so,   children   use   only   certain   options   as   they   construct   new   words:     They   follow   the   rules   of   the   language   being   acquired,   and   opt   first   for   the   simplest   forms   available   that   are   also   transparent   (see  Clark,  1993),  as  in  the  examples  in  (iii).       (iii)

(a) Novel N-N compounds 1. A (1;7, picture of a crow): CROW-bird 2. C (1;11, looking at spoon for cod-liver oil): OIL-spoon 3. C (2;0, for hand coffee-grinder): COFFEE-churn 4. R (2;0, stray dog found near site of a fire): a FIRE-dog 5. H (2;1, picture in book of s’one with a spear): SPEAR-page 6. D (2;3, choosing a T-shirt to wear): BOAT-shirt.  (b)  Novel  verbs   1. G (2;5) How does a violin go? It bows. 2. J (2;5, waving a toy animal as he played): It’s flagging around. 3. S (2;4, as Mo prepared to brush his hair): Don’t hair me. 4. S (2;4, reaching for calculator with ‘buttons’): I can button it. 5. S (2;7, after hitting his baby sister with a broom) Mother: What did you do? S: I broomed her. 6. Z (2;6): Can I fire the candle? [= light]

Children  rely  initially  on  the  most  productive  options  for  constructing  new  words  in   their  language  ––  compounds  nouns  and  denominal  verbs  in  English,  for  example  ––   but   replace   most   of   their   coinages   with   the   relevant   conventional   forms   as   they   acquire  more  vocabulary.    

 

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In   all   three   activities   within   interaction   ––   other-­‐initiated   repairs,   new-­‐word  

offers,   and   the   need   to   coin   new   words     ––   children   provide   clear   evidence   of   attending   to   the   language   used   by   their   interlocutors.     They   repair   their   utterances,   they  ratify  new  words  offered,  and,as  they  learn  more  vocabulary,  replace  their  own   coinages  with  the  conventional  adult  terms.    In  short,  they  begin  to  adjust  their  own   usage  from  early  on  to  match  the  adult  targets  offered  within  the  interaction.    At  the   same  time,  they  take  adult  usage  for  their  overall  target  in  comprehension,  and  make   use  of  that  in  as  they  come  to  align  their  own  usage  with  the  adult’s.       References      Chouinard,   M.   M.,   &   Clark,   E.   V.   2003.   Adult   reformulations   of   child   errors   as   negative  evidence.  Journal  of  Child  Language,  30,  637-­‐669.      Clark,   E.   V.   1993.     The   Lexicon   in   Acquisition.     Cambridge:   Cambridge   University   Press.      Clark,  E.  V.  2007.  Young  children’s  uptake  of  new  words  in  conversation.  Language   in  Society,  36,  157-­‐182.      Clark,   E.   V.   2010.     Adult   offer,   word-­‐class,   and   child   uptake   in   early   lexical   acquisition.  First  Language,  30,  250-­‐269.      Clark,   E.   V.,   &   Estigarribia,   B.   2011.   Using   speech   and   gesture   to   inform   young   children  about  unfamiliar  word  meanings.    Gesture,  11,  1-­‐23.      Clark,   E.   V.,   &   de   Marneffe,   M.-­‐C.   2012.   Constructing   verb   paradigms   in   French:   Adult  construals  and  emerging  grammatical  contrasts.  Morphology,  22,  89-­‐ 120.      Clark,   E.   V.,   &   Wong,   A.   D.-­‐W.   2002.     Pragmatic   directions   about   language   use:   words  and  word  meanings.  Language  in  Society,  31,  181-­‐212.   Goldin-­‐Meadow,  S.,  Goodrich,  W.,  Sauer,  E.,  &  Iverson,  J.    2007.    Young  children  use   their   hands   to   tell   their   mothers   what   to   say.   Developmental   Science,   10,   778-­‐785.        Kelly,   B.   F.     2011.   A   new   look   at   redundancy   in   children’s   gesture   and   word   combinations.     In   I.   Arnon   &   E.   V.   Clark   (Eds.),   Experience,   Variation,   and   Generalization:   Learning   a   First   Language   (pp.   73-­‐89).     Amsterdam:   John   Benjamins.    Olson,   J.,   &   Masur,   E.   F.   2011.     Infants’   gestures   influence   mothers’   provision   of   object,   action,   and   internal   state   labels.   Journal  of  Child  Language,   38,   1028-­‐ 1054.  

 

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Acquiring  reference:  the  case  of  metonymy   Ingrid  Lossius  Falkum  (Oslo)  [email protected]   In  classical  rhetoric,  metonymy  figures  among  the  set  of  tropes,  involving  the  replacement   of   ‘literal’   language   with   unexpected   expressions   that   gives   rise   to   a   richer   and/or   clearer   ‘figurative’  meaning  (e.g.,  Habinek,  2005).  In  metonymy,  the  figurative  meaning  stands  in   a  contiguity  relationship  with  the  literal  meaning,  as  in  (1):       (1)  [Orchestra  member]:  The  first  violin  missed  the  rehearsal  today.     In   modern   pragmatic   theory,   metonymy   is   often   seen   as   a   referential   shorthand   device   with   a   function   to   economise   processing   effort   in   identifying   a   referent   (e.g.,   Nunberg   1979).  While  metonymic  uses  by  adults  are  common,  little  research  has  investigated  the   possible   role   of   this   referential   device   in   the   language   of   young   children.   However,   developmental  studies  of  categorisation,  symbolic  gesturing  and  lexical  innovation,  such   as  denominalisation  and  compounding  (e.g.,  Acredolo  &  Goodwyn  1988;  Clark,  E.  V.  1982;   Clark,  Gelman  &  Lane  1985;  Rosch  et  al.  1976;)  have  attested  to  the  presence  of  an  early   ability  to  exploit  salient  associations  for  the  purpose  of  communication.     In   this   paper,   I   suggest,   based   partly   on   diary   data   from   the   early   referential   productions   of   a   one-­‐   and   a   two-­‐year-­‐old,   partly   on   evidence   from   a   recent   study   on   metonymy  production  in  preschool  children  aged  three  to  five  (Falkum,  Recasens  &  Clark,   under  revision),  that  metonymy  may  in  fact  serve  a  useful  communicative  function  in  the   language   of   young   children,   by   offering   them   a   productive   option   for   referring   to   unfamiliar  entities.  In  the  earliest  stages  of  acquisition,  metonymy  may  provide  children   with   a   useful   strategy   for   compensating   for   vocabulary   gaps   and/or   limited   expressive   ability,   and   later,   an   accessible   short-­‐hand   strategy   for   making   reference   to   things   that   lack   proper   names   or   a   ready-­‐made   category   label,   often   in   cases   where   use   of   a   fuller   referring  expression  might  be  more  demanding  in  terms  of  linguistic  and/or  conceptual   complexity.   Thus,   together   with   well-­‐attested   processes   such   as   compounding   and   denominalisation,  metonymy  may  be  part  of  the  early  repertoire  of  referential  strategies   available  to  the  child.  This  has  implications  for  theories  of  the  mechanism(s)  underlying   metonymy   use   in   the   language   of   adults,   and,   in   particular,   for   the   literal-­‐figurative   distinction  assumed  by  classical  approaches.       References:   Acredolo,  L.  P.,  &  Goodwyn,  S.  W.  (1988).  Symbolic  gesturing  in  normal  infants.     Child  Development,  59(2),  450-­‐466.   Clark,  E.  V.  1982.  The  young  word  maker:  A  case  study  of  innovation  in  the     child’s  lexicon.  In  E.  Wanner  &  L.  Gleitman  (Eds.),  Language  Acquisition:     the  State  of  the  Art  (pp.  390-­‐425).  Cambridge:  Cambridge  University     Press.   Clark,  E.  V.,  Gelman,  S.  A.  &  Lane,  N.  M.  1985.  Compound  nouns  and  category     structure  in  young  children.  Child  Development  56(1),  84-­‐94.   Falkum,  I.  L.,  Recasens,  M.  &  Clark,  E.  V.  [Under  revision].  ‘The  moustache  sits     down  first’:  On  the  acquisition  of  metonymy.    

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Habinek,  T.  (2005).  Ancient  Rhetoric  and  Oratory.  Oxford:  Blackwell.   Rosch,  E.,  Mervis,  C.,  Gray,  W.  D.,  Johnson,  D.  M.,  &  Boyes-­‐Braem,  P.  1976.  Basic     objects  in  natural  categories.  Cognitive  Psychology,  8,  382-­‐439.         Gesture’s  helping  hand  in  language  learning     Şeyda  Özçalışkan  (Georgia  State)  [email protected]  

 

Children  communicate  using  gestures  before  they  speak,  and  continue  to  use  gesture  along   with  speech  even  after  they  begin  to  produce  their  first  words.  Does  gesturing  merely   precede  talking,  or  is  it  itself  relevant  to  the  language-­‐learning  process?  If  gesturing  not   only  precedes  language,  but  also  reflects  knowledge  relevant  to  the  developmental  process   responsible  for  language,  then  the  differences  and/or  delays  in  attaining  linguistic   milestones  in  speech  should  be  preceded  by  similar  delays  in  the  attainment  of  gestural   precursors  to  these  milestones.  I  approach  this  question  from  several  angles,  studying   children  with  typical  and  atypical  (e.g.,  autism)  developmental  profiles.  Overall,  my   research  shows  gesture  to  be  a  robust  aspect  of  the  language  learning  process.  Gesture   remains  preserved  across  different  learners  and  acts  a  forerunner  of  change  in  the  child’s   developing  language  system.     Language  from  the  Ground  Up:  A  Study  of  Homesign  Communication   Endre  Begby  (Simon  Fraser  University)  [email protected]   Philosophers  are  often  beholden  to  a  picture  of  language  as  a  largely  static,  well-­‐defined   structure  which  is  handed  over  from  generation  to  generation  by  an  arduous  process  of   learning:  language,  on  this  view,  is  something  that  we  are  given,  and  that  we  can  make  use   of,   but   which   we   play   no   significant   role   in   creating   ourselves.   This   picture   is   often   maintained   in   conjunction   with   the   idea   that   several   distinctively   human   cognitive   capacities   could   only   develop   via   the   language   acquisition   process,   as   thus   understood.   This   paper   argues   that   the   phenomenon   of   homesign,   i.e.,   spontaneous   gesture   systems   devised  by  deaf  children  for  the  purpose  of  communicating  with  their  non-­‐signing  peers,   can   shed   valuable   empirical   light   on   these   convictions.   Contrary   to   grounding   assumptions   of   Wittgensteinian,   Gricean,   and   Peircean   approaches   to   language,   homesign   shows   how   core   properties   of   language   –   including   semantic   properties   –   can   be   built   from   the   ground   up   in   idiosyncratic   ways   to   serve   the   communicative   needs   of   individuals.    

 

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Human  self-­conscious  mind  in  early  development   Philippe  Rochat  (Emory)  [email protected]   The  aim  of  the  presentation  is  to  discuss  and  revisit  infants  and  children’s   representational  development  via  the  emergence  of  self-­‐consciousness.  Self-­‐consciousness   or  the  ability  to  construe  oneself  as  an  object  of  reflection  is  considered  as  a  unique   feature  of  human  development.  I  try  to  show  that  self-­‐consciousness  parallels  and   probably  co-­‐emerges  with  human  unique  symbolic  and  linguistic  competencies.  In  fact,   self-­‐consciousness  in  development  might  contribute  in  “bootstrapping”  language   acquisition  when  considered  from  the  point  of  view  of  what  motivates  children  to   communicate  and  learn  from  others.  From  this  vantage  point,  language  acquisition  and   concept  formation  are  inseparable  from  the  ultimate  communicative  function  they  serve.   This  function,  I  propose,  is  the  negotiation  and  sharing  of  values  between  increasingly   objectified  self  and  objectified  others.  A  developmental  blueprint  depicting  various  layers   of  representational  abilities  accumulated  by  children  between  birth  and  5  years  is   proposed.  This  blueprint  captures  changes  from  literal  to  meta-­‐conceptualization  of  what   links  self  to  others.  Unique  to  humans,  these  changes  could  be  the  primary  context  of   children’s  language  acquisition  and  concept  formation.       Core  Forms  of  Social  Relations   Lotte  Thomsen  (Oslo)  [email protected]   Young  children  face  the  daunting  task  of  figuring  out  the  social  relations  among  members   of  their  community-­‐-­‐both  with  the  child  him-­‐  or  herself  and  with  each  other.  These   representations  of  social  relations  cannot  be  reduced  to  representations  of  individual   people.    Knowing  Bill  well  does  not  allow  us  to  infer  Bill's  relations  to  Fred:  are  they   members  of  the  same  family,  friends,  in  some  hierarchical  dominance  relation?      I  will   argue  that  innate,  core  concepts  of  fundamental  forms  of  social  relations  are  necessary  to   help  children  discover  the  answers  to  these  questions,  and  that  these  core  relational   forms  undergird  social  psychological  phenomena  at  large.    I  will  first  review  evidence  for   two  basic  types  of  dyadic  relations  that  are  understood  in  infancy  and  early  childhood:     intimate,  cooperative,  communal  sharing  relations  and  dominance  relations.    Next,  I  will   present  new  data  suggesting  that  the  abstract,  structural  forms  of  clique  and  hierarchy   undergird  concepts  of  community/fællesskab  and  status/dominance:  Across  culture,  and   among  primary  school  and  possibly  pre-­‐school  and  pre-­‐verbal  children,  iconic  depictions  

 

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of  a  clique  of  overlapping  circles  (where  all  units  connect  with  all  others  inside  the  clique   and  none  outside  it,)  are  seen  as  communal  groups  (e.g.  “people  who  love  each  other  and   will  die  for  each  other”).  Conversely,  a  pyramidal  arrangement  of  circles  is  interpreted  as   dominance  or  status  relations  (e.g.  “a  dictatorship”,  “the  strong  and  the  weak”).  Among   adults,  both  interpretations  are  maintained  under  recursion.  Importantly,  preferences  for   such  graphical  forms  correlate  with  a  number  of  psychological  and  political  phenomena   (such  as  secure  attachment,  agreeableness,  empathy,  and  support  for  social  welfare,   multiculturalism,  and  real  economic  donations  to  outgroups  in  need  (e.g.  Save  the   Children  Palestine)  versus  self-­‐enhancement,  racism,  and  support  for  ethnic  persecution   of  immigrants).         Child  language  acquisition  of  information  structure  and  word  order  variation     Marit  Westergaard  (Tromsø)  [email protected]   In  this  talk  I  will  discuss  children’s  acquisition  of  word  order  variation  that  is  dependent   on  information  structure,  focusing  on  examples  from  Norwegian  and  English,  e.g.  variable   verb-­‐second,   double   object   constructions,   or   different   subject   positions   (preceding   or   following   negation).   The   choice   of   word   order   in   such   cases   is   typically   dependent   on   whether  the  speaker  considers  an  element  (a  subject  or  an  object)  to  be  already  familiar   in  the  discourse  or  whether  it  represents  new  (or  focused)  information.  In  the  following   examples,  an  informationally  given  subject  precedes  negation  (typically  a  pronoun  as  in   (1)),  while  a  subject  conveying  new  information  follows  negation  (typically  a  noun  phrase   as  in  (2)).   (1)    

nei,  nå      må        han  ikke  røre.     no    now  must  he        not      touch       ‘No,  now  he  mustn’t  touch.’    

 

 

 

(2)  

komte              ikke  reven  med  mæ  #  i      senga          mi?           come.PAST  not      fox.DEF  with  me            in  bed.DEF  my           ‘Didn’t  the  fox  come  with  me  in  my  bed?’  

(Ina.21,  age  2;9.18)      

(Ina.18,  age  2;8.12)  

It   has   often   been   argued   that   syntax   is   early,   but   pragmatics   is   late   acquired   (e.g.   Chien   &   Wexler   1990,   Batman-­‐Ratyosyan   &   Stromswold   2002).   However,   a   number   of   recent   studies  have  shown  that  word  order  variation  such  as  the  above  is  generally  in  place  from   early   on   (e.g.   De   Cat   2003,   Westergaard   2013),   with   only   occasional   errors,   typically   involving   lack   of   syntactic   movement   of   an   informationally   given   element,   such   as   the  

 

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pronominal  subject  han  ‘he’  in  (3).       (3)  

har                            ikkje  han  fota  her?                   have.PRES  not          he        foot.PL  here   ‘Doesn’t  he  have  feet  here?’   Target:  har  han  ikkje  fota  her?  

 

 

(Ina.13,  age  2;5.25)  

Such   findings   raise   a   number   of   questions.   For   example,   do   young   children   not   understand   the   difference   between   given   and   new   information?   Have   they   not   yet   acquired  what  Schaeffer  (2000)  refers  to  as  the  Concept  of  non-­‐shared  knowledge?    Or  is   lack   of   syntactic   movement   simply   a   result   of   an   economy   principle,   ensuring   that   children   will   not   produce   an   element   or   perform   a   movement   operation   unless   there   is   clear  evidence  for  this  in  the  input?   References   Batman-­‐Ratyosyan,   N.   &   K.   Stromswold.   2002.   Morphosyntax   is   easy,   discourse/pragmatics   is   hard.  Proceedings  of  the  26th  BUCLD:  793-­‐804.  Cascadilla  Press.   Chien,  Y-­‐C.  &  K.  Wexler.  1990.  Children’s  knowledge  of  locality  conditions  in  binding  as  evidence   for  the  modularity  of  syntax  and  pragmatics.  Language  Acquisition  1.3:  225-­‐295.   De  Cat,  C.  2003.  Syntactic  manifestations  of  very  early  pragmatic  competence.  Proceedings  of  the   27th  BUCLD,  209-­‐219.  Cascadilla  Press.   Schaeffer,   J.   2000.   The   Acquisition   of   Direct   Object   Scrambling   and   Clitic   Placement:   Syntax     and   Pragmatics.  Benjamins.   Westergaard,   M.   2011.   Subject   positions   and   information   structure:   The   effect   of   frequency   on   acquisition  and  change.  Studia  Linguistica  3,  299-­‐332.   Westergaard,   M.   2013.   The   Acquisition   of   Linguistic   Variation:   Parameters   vs.   Micro-­‐cues.   In   T.   Lohndal   (ed),   In   Search   of   Universal   Grammar:   From   Old   Norse   to   Zoque,   275-­‐298.   Benjamins.  

    Linking  children’s  interest  in  objects  and  actions  with  objects  to  differences  in  the   topics  of  parent’s  child-­directed  speech  and  subsequent  child  language  production.     Imac  Zambrana  (Oslo)  [email protected]   Mothers typically respond in a semantic contingent ways to their children’s attentional focus, behavior and verbal production (Cross, 1977; Huttenlocher, et al., 2010; Snow, 1977; Snow et al., 1987; Tamis-LeMonda et al., 2013, 2014). Therefore, the language input an individual child gets from her/his parents is partly related to that child's intentional and non-intentional demonstration of interests (as shown by their focus of attention, actions, gestures and verbal production), reflecting both parent-to-child and important child-to-parent processes driving the content of language and knowledge that children are subjected to early on. This raises three set of questions that will be focused on in the current paper: (1) Do children’s particular interest in  

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certain objects and subsequent interaction with that object elicit differences in the topics of child-directed speech across parents? In other words, do parents tend to provide similar language input for similar child action/object combinations? (2) Is there a change in the type of child action/object combinations that children perform at different ages, and is that related to differences in the language children are receiving from parents across ages? (3) Do children themselves produce language output that is related to whether the language input they received was related to their own interests/actions? References Cross, T. G. (1977). Mothers' speech adjustments: the contribution of selected child listener variables. In Catherine E. Snow and Charles A. Ferguson (Eds.), Talking to Children: Language Input and Acquisition (pp. 151-188). Cambridge: Cambridge University Press. Huttenlocher, J., Waterfall, H., Vasilyeva, M., Vevea, J., & Hedges, L.V. (2010). Sources of variability in children's language growth. Cognitive Psychology, 61(4). 343-365. Snow, C.E. (1977). Mothers' speech research: From input to interaction. In Catherine E. Snow and Charles A. Ferguson (Eds.), Talking to Children: Language Input and Acquisition (pp. 31-49). Cambridge: Cambridge University Press. Snow, C. E., Perlmann, R., and Nathan. D. (1987). Why routines are different: Toward a multiple-factors model of the relation between input and language acquisition. In K. Nelson, and A. van Kleeck (Eds.), Children’s Language, Volume 6 (pp. 65-97). Hillsdale, NJ: Erlbaum. Tamis-Lemonda C. S., Kuchirko, Y., & Tafuro, L. (2013). From Action to Interaction: Infant Object Exploration and Mothers’ Contingent Responsiveness. IEEE T. Autonomous Mental Development 5(3), 202-209. Tamis-LeMonda, C., Kuchiro, Y., & Song, L. (2014). Why is infant language learning facilitated by parent responsiveness? Current Directions in Psychological Science, 23, 121-126.  

 

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