Questions for the Week - PowerPoint PPT Presentation

1 / 70
About This Presentation
Title:

Questions for the Week

Description:

Questions for the Week * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * BUT learners/adapters master one structure more easily. – PowerPoint PPT presentation

Number of Views:85
Avg rating:3.0/5.0
Slides: 71
Provided by: Ebros3
Category:

less

Transcript and Presenter's Notes

Title: Questions for the Week


1
Questions for the Week
2
Questions
  • Can (all?) modifications in foreign language
    production be explained as transfer from the
    native language grammar? Does universal
    markedness play a role? Language-independent
    phonetic factors?

3
Questions, continued
  • Why are some foreign structures mastered more
    quickly than other (equally new) structures?
  • Japanese chiimu team
  • shiifuudo seafood
  • shiitibanku Citibank
  • never siichibanku

4
Questions, continued
  • What determines how illegal structures are
    modified?
  • Christmas
  • Japanese kurisumasu
  • Hawaiian kalikimaki
  • Maori kirihimete
  • Samoan kilisimasi

5
Questions, continued
  • How much of foreign language modification is a
    result of misperception? Of misproduction? And
    how can we tell?

6
For example
  • Does a Japanese speaker who pronounces
    Christmas as kurisumasu actually HEAR the
    English pronunciation as kurisumasu?
  • English Japanese
  • kr?sm?s kurisumasu ?

7
Grammar
  • Acoustic Form
  • perception
    (e.g.,Boersma 1998, V Pater 2004)
  • Phonological Representation gt UR gt
  • production
  • V
  • Phonetic Representation

8
(1) Modification Misproduction (e.g., Paradis
and LaCharité 1997)
  • Adapters correctly identify FL phonemes, map to
    UR.
  • Production grammar repairs underlying
    representations to conform to native language
    constraints.

9
Problems with claim that all modification
misproduction
  • Modification may be influenced by subphonemic
    information.
  • e.g., Kang 2003 Vowels in Korean loans may be
    inserted even after legal stop codas. Likelihood
    of insertion is related to likelihood of the
    release of that stop in the English source.

10
(2) ModificationMisperception (e.g., Peperkamp
Dupoux 2003)
  • Japanese listeners hear ebzo as ebuzo.
  • Cf. Dupoux et al. 1999, Dehaene-Lambertz et al.
    2000, Jacquemot et al. 2003 for experimental
    support.

11
Not a lexical effect Dupoux et al. 2001
  • Lexical decision task
  • nonword stimuli real words
  • sokdo sokudo speed
  • mikdo mikado emperor
  • Sokdo classified as real words, mikdo as nonwords

12
Problems with claim that all adaptation
misperception
  • Some perception is accurate (e.g. Berent et al.
    syllable-counting experiments)
  • Still must explain direction of misperception
    why kurisumasu and not kilihimete, etc.?

13
(3) Modification misproduction, but guided by
phonetic similarity
  • P-map Hypothesis (Steriade 2001, etc.) Learners
    perceive FL phonological forms accurately, but
    the production grammar contains constraints that
    enforce phonetic similarity between UR and PR.

14
Problem with claim that adaptation production
perceptual similarity
  • Even after adding perceptual similarity
    constraints to the production grammar, we are
    left with a residue of cases that must be
    analyzed as misperception (inaccurate mapping
    from foreign acoustic form to adapters UR).

15
(4) Dual-level model(e.g., Silverman 1992, Yip
2002, 2006)
  • Listeners misperceive less salient features
    (partially inaccurate mapping to UR).
  • Listeners accurately perceive more salient
    features, but production grammar may still make
    changes in mapping from UR to PR.

16
Problem with Dual-Level Model of adaptation
  • Lack of clear criteria for deciding whether a
    particular modification pattern is a function of
  • Misperception
  • Misproduction

17
Questions, continued
  • If foreign forms are misperceived, at what level
    of processing does this misperception occur?

18
Questions, continued
  • To what extent is perception determined by early
    language experience?
  • Is there a neural commitment to L1 contrasts?

19
Questions, continued
  • Can formal theories of grammar shed light on
    foreign language production patterns?

20
One Potential Criterion for perception vs.
production Learnability
  • OT aims to define
  • What is a possible grammar (set of ranked
    constraints).
  • What is a learnable grammar (rankings can be
    derived from input data, using an error-driven
    algorithm).

21
  • Modification patterns that cannot be described in
    terms of learnable production grammar rankings
    must be a function of
  • Misperception, or
  • Other factors (frequency, timeline of exposure to
    FL, etc.).

22
Today
  • Models of Acquisition First Language and Foreign
    Languages

23
To build a phonological grammar, children must
learn
  • What is linguistically significant in the target
    language (possible contrasts).
  • What is legal in the target language (possible
    structures, phonotactics).
  • Morphemes and allomorphs (alternations).

24
Stages of Acquisition (e.g., Hayes 2004)
  • Birth to 6 months can distinguish all possible
    phoneme contrasts.
  • 6-8 months begin to form sound categories
    (perceptual magnet effects).
  • 8-10 months begin to form a lexicon begin to
    learn phoneme categories of ambient language.
  • Older begin to learn morphological processes,
    alternations.

25
Perception vs. Production Common Assumptions
  • Children generally perceive L1 accurately.
  • Many of childrens simplifications of adult forms
    are due to misproduction rather than
    misperception.

26
Example One Argument for Accurate Perception
  • Gnanadesikan (2004) Productions by G, 27-33
    months

27
Simplification of onset clusters
  • G Adult
  • a. s-stop
  • gaj skaj sky
  • b?w sp?l spill
  • d? star star
  • b. s-sonorant
  • so sno snow
  • sip slip sleep

28
  • s-obstruent gt obstruent (sky gt gaj)
  • s-sonorant gt s (snow gt so)
  • Onset C of lowest sonority is maintained.

29
Clusters containing labial r or w
  • G Adult
  • a. pi tri tree
  • b. b?k dr??k drink
  • c. paj kraj cry
  • d. bep grep grape
  • e. pajt kwajt quite
  • f. f?'D? sw?'D? sweater
  • g. f?w sm?l smell

30
  • pr, tr, kr, kw gt p (tree gt pi)
  • br, dr, gr gt b (grape gt bep)
  • sm, sw gt f (smell gt f?w
  • Labial articulation is always maintained, though
    labial segment may disappear.

31
Gs perception bep grape
  • Does G actually hear (e.g.) gr as b?

32
Replacement of initial unstressed syllable
  • G Adult
  • a. fitén? k?ntén?r container
  • b. fig?'Di sp?g?'Di spaghetti
  • c. fib?'k? r?b?'k? Rebecca
  • d. fimáwo t?máro tomorrow

33
Accurate perception?
  • Does G actually hear the material in the initial
    syllable replaced by fi?

34
Preference for obstruent onsets
  • G Adult
  • a. fikál? koál? koala
  • b. fibún b?lún balloon
  • c. fipís p?lís police
  • d. fibó b?ló below

35
  • When the syllable following fi begins with a
    high sonority onset (liquid, glide) or no onset,
    the word-initial onset is recruited
  • balloon gt fibún

36
Gs Perception
  • Although G replaces initial unstressed syllables
    with fi, she apparently does hear the segmental
    content (at least the onset) of these
    syllables--because features of that onset may
    appear elsewhere in the word.

37
  • fib?j? g?r?l? gorilla
  • It seems unlikely that G hears gr in gorilla
    as b, since G seems to hear that gorilla
    contains 3 syllables.

38
Gnanadesikans analysis
  • Gs modifications result from a grammar that
    differs from the adult grammar.
  • These modfications result from a preference for
    less marked surface structures.
  • Each feature of Gs grammar is attested in some
    adult NL grammar.

39
OT is intended as a theory of
  • typologydefines possible grammars.
  • learnability--defines how a grammar is learned
    from exposure to a set of data.

40
Architecture of the theory
  • Markedness constraints (or well-formedness
    constraints, structural constraints) define
    possible surface structures.
  • e.g. NoCoda, NoComplexOnset

41
  • Faithfulness constraints define possible mappings
    from lexical representations to surface
    representations.
  • e.g. Dep (no insertion), Max (no deletion)

42
Ranking Tableau MgtgtF
/sno/ NoComplexOnset (Markedness) Max (no deletion) (Faithfulness)
a. sno !
gt b. so
43
Ranking Tableau FgtgtM
/sno/ Max (no deletion) (Faithfulness) NoComplexOnset (Markedness)
gt a. sno
b. so !
44
Rankings determine surface structures
  • M gtgtF suppresses surface contrasts.
  • NoComplexOnset gtgt Max
  • /so/ gt so
  • /sno/ gt so
  • (no CV-CCV contrast is possible)

45
  • F gtgt M preserves lexical contrasts.
  • Max gtgt NoComplexOnset
  • /so/ gt so
  • /sno/ gt sno
  • (CV-CCV contrast is possible)

46
Rankings determine preferred repair
  • Dep gtgt Max /sno/ gt so
  • (deletion is preferred to insertion)
  • Max gtgt Dep /sno/ gt sVno
  • (insertion is preferred to deletion)

47
Rankings determine
  • Choice of deletion vs. insertion
  • Which C is deleted (/sno/ gt so vs. no)
  • Which V is inserted (/sno/ gt sino, sono, etc.)

48
Assumptions (classical OT)
  • Constraint set is universal.
  • Rankings are language-specific.
  • Each possible ranking defines a possible grammar.

49
Classical OT model of First Language Acquisition
  • Constraints are innate.
  • Rankings must be learned.

50
Corollary
  • Each developing grammar (each stage of language
    acquisition) must represent a possible human
    grammar, since grammars differ only in ranking of
    constraints.

51
Parallels between Gs grammar and adult grammars
  • onset simplification to lowest-sonority C gay
    for sky, so for snow
  • Sanskrit reduplication pa-prach, tha-stha

52
Coalescence of segments
  • bep for 'grape', f?w for 'smell
  • Navajo dx gt g, Luganda mu gt mw, Kirundi
    tu gt tkw

53
Preference for trochaic feet, aligned with left
edge fibún for balloon
  • Fikkert 1994, Demuth 1996
  • Dutch óxant (ólifant), ánd?, ánR? (andere),
  • bál? (bal)
  • Sesotho kolo (sekolo) school
  • Kiche (word-final stress) lóm (jolóm) head

54
Melodic overwriting fi
  • Kolami pal-gil, kota-gita, maasur-giisur
  • Chinese secret language may ka for ma, xway kwey
    for xwey

55
Child grammar possible adult grammar
  • Each developing grammar should reflect some
    possible constraint ranking.

56
Question
  • Is there an initial state/default constraint
    ranking?
  • Answer from Gnanadesikan and others MgtgtF

57
Arguments for Default MgtgtF
  • 1. Childrens modifications are generally in the
    direction of reduced markedness.

58
Subset Problem (Angluin 1980, Baker 1979)
  • 2. If children can only use positive evidence
    (actual linguistic forms) in constructing a
    grammar, they must begin with the most
    restrictive grammar possibleotherwise their
    grammars will overgenerate.

59
Illustration
  • Child C (for conservative) assumes MgtgtF
    NoComplexOnset gtgt Faithfulness.
  • Child Cs grammar allows only CV syllables.

60
  • Child R (for reckless) assumes FgtgtM
  • Faithfulness gtgt NoComplexOnset.
  • Child Rs grammar allows both CV and CCV
    syllables.

61
If Child C (MgtgtF) is born to
  • Hawaiian-speaking parents,
  • Childs grammar adult grammar
  • English-speaking parents,
  • Childs grammar ? adult grammar, but no
    worries--child gets positive evidence (CCV)
    telling her to rerank constraints.

62
If Child R (FgtgtM) is born to
  • English-speaking parents,
  • Childs grammar adult grammar
  • Hawaiian-speaking parents,
  • ? Childs grammar ? adult grammar, AND
  • no positive evidence can ever trigger
  • reranking.

63
Learning is error-driven
  • Default ranking MgtgtF.
  • Other rankings (MgtgtM, FgtgtF) must be learned from
    data.

64
What is default for language contact situations?
  • Presumably, the learner/adapter begins from the
    NL rankings.
  • Therefore, adaptation/error patterns should be
    explainable as either
  • transfer of NL rankings, or
  • universal default rankings.

65
Potential Problems in Language Contact Phonology
  • 1. M gtgtM rankings (differential difficulty)
  • NL bans 2 structures
  • FL allows both structures

66
  • BUT learners/adapters master one structure more
    easily.
  • e.g. Japanese shiitibanku (both ti and si are
    illegal in Japanese).

67
2. FgtgtF rankings (differential repair)
  • NL has no inputs with illegal structures, so no
    evidence for repair preference
  • BUT learners/adapters adopt specific repairs,
  • AND these repairs may vary across languages
    (therefore not universal),
  • AND different repairs may be used within a single
    language in different contexts.

68
Dehu (Tryon 1970)
  • a. Obstruent__Sonorant copy V
  • peleit plate
  • galas glas
  • b. Obstruent__Obstruent default i
  • sipö spur
  • sipun spoon

69
3. Ranking Reversals
  • Korean NL stopnasal gt nasal nasal
  • /kukmul/ gt ku?mul soup
  • But in SLA, Koreans often insert vowel
  • /tegnal/ gt teg?nal (Hwang 2006).

70
Proposal
  • Where modification patterns would require a
    grammar with unlearnable rankings, these patterns
    have their source in factors such as
  • misperception
  • frequency
  • orthography
  • time course of language contact
  • etc.
Write a Comment
User Comments (0)
About PowerShow.com