Heritage speakers (HS) have been shown to experience difficulties with inflectional morphology (particularly with irregular morphology) and to frequently overapply regular morphology. The present study seeks to get further insight into the inflectional processes of HS by investigating how these are generalized to nonce words in language production, the first study of this kind for heritage Turkish. We specifically examined morphological generalization processes in the Turkish aorist which – unusual for this language – includes both regular and irregular forms. A written elicited-production experiment containing nonce verbs with varying degrees of similarity to existing verbs was administered to Turkish HS and native monolingually-raised Turkish speakers (MS). We also explored how well a formal model that was trained on a large lexical corpus of Turkish matches the human speakers’ performance. Our main finding is that HS employ both similarity-based and rule-based mechanisms for morphological generalization of the Turkish aorist, with subtle differences to the way these mechanisms are applied by Turkish MS.
AlbiriniABenmamounE (2014a) Aspects of second-language transfer in the oral production of Egyptian and Palestinian heritage speakers. International Journal of Bilingualism18: 244–73.
2.
AlbiriniABenmamounE (2014b) Concatenative and nonconcatenative plural formation in L1, L2, and heritage speakers of Arabic. The Modern Language Journal98: 854–71.
3.
AndersonRT (2001) Lexical morphology and verb use in child first language loss: A preliminary case study investigation. International Journal of Bilingualism5: 377–401.
4.
BaayenRHDavidsonDJBatesD (2008) Mixed-effects modelling with crossed random effects for subjects and items. Journal of Memory and Language59: 390–412.
5.
BarrDJLevyRScheepersCTilyHJ (2013) Random effects structure for confirmatory hypothesis testing: Keep it maximal. Journal of Memory and Language68: 255–78.
6.
BenmamounEMontrulSPolinskyM (2010) Prolegomena to heritage linguistics [white paper]. Champaign, IL / Cambridge, MA: University of Illinois at Urbana-Champaign and Harvard University.
7.
BenmamounEMontrulSPolinskyM (2013) Heritage languages and their speakers: Opportunities and challenges for linguistics. Theoretical Linguistics39: 129–81.
8.
BenmamounEAlbiriniAMontrulSSaadahE (2014) Arabic plurals and root and pattern morphology in Palestinian and Egyptian heritage speakers. Linguistic Approaches to Bilingualism4: 89–123.
9.
BybeeJ (1995) Regular morphology and the lexicon. Language and Cognitive Processes10: 425–55.
10.
CarusoM (2004) Attrition in the verb system of Italian in Australia. In: RubinoA (ed.) Using and learning Italian in Australia. Amsterdam: John Benjamins, pp. 9–24.
11.
ChoiHW (2003) Paradigm leveling in American Korean. Language Research39: 183–204.
12.
ClahsenH (1999) Lexical entries and rules of language: A multidisciplinary study of German inflection. Behavioral and Brain Sciences22: 991–1060.
13.
ClahsenHAveledoFRocaI (2002) The development of regular and irregular verb inflection in Spanish child language. Journal of Child Language29: 591–622.
14.
CozensS (2003) Heritage learners in the Polish language classroom. Australian, Slavonic and East European Studies17: 27–45.
15.
DallerMOngunZ (2018) The threshold hypothesis revisited: Bilingual lexical knowledge and non-verbal IQ development. International Journal of Bilingualism22: 675–94.
16.
DuffieldN (2018) Reflections on psycholinguistic theories: Raiding the inarticulate. Cambridge: Cambridge University Press.
17.
DutkovaL (1998) Texas Czech: An ethnolinguistic study. Unpublished PhD thesis, University of Arizona, Tucson, AZ, USA.
18.
El HaimeurA (2019) The acquisition of morphology in Moroccan heritage speakers in France. Unpublished PhD thesis, University of Wisconsin, Madison, WI, USA.
19.
ElmanJBatesEJohnsonM, et al. (1996) Rethinking innateness: A connectionist perspective on development. Cambridge, MA: MIT Press.
20.
GorKCookS (2010) Non-native processing of verbal morphology: In search of regularity. Language Learning60: 88–126.
21.
GorKVdovinaT (2010) Frequency, regularity, and input in second language processing of Russian verbal inflection. Slavic and East European Journal54: 7–31.
22.
GürelA (1999) Decomposition: To what extent? The case of Turkish. Brain and Language68: 218–24.
23.
HagiwaraHSugiokaYItoTKawamuraMShiotaJ (1999) Neurolinguistic evidence for rule based nominal suffixation. Language75: 739–63.
24.
HalmariH (1998) Case-assignment and adverbials in Finnish–English bilingual sentences. In: NiemiJOdlinTHeikkinenJ (eds) Language contact, variation and change. Joensuu: University of Joensuu, pp. 98–110.
25.
HalmariH (2005) ‘I’m forgetting both’: L1 maintenance and codeswitching in Finnish–English language contact. International Journal of Bilingualism9: 397–433.
26.
HankamerJ (1989) Morphological parsing and the lexicon. In: Marslen-WilsonWD (ed.) Lexical representation and process. Cambridge, MA: The MIT Press, pp. 392–408.
27.
KırkıcıBKırkıcıK (2009) Türkçe geniş zamanda sözcükler ve kurallar [Words and rules in Turkish aorist]. Presented at the 23rd National Linguistics Conference, Famagusta, Turkish Republic of Northern Cyprus.
28.
KornfiltJ (1997) Turkish. London: Routledge.
29.
KöpkeBSchmidM (2004) First language attrition: The next phase. In: SchmidMKöpkeBKeijzerMWeilemarL (eds) First language attrition: Interdisciplinary perspectives on methodological issues. Amsterdam: John Benjamins, pp. 1–43.
30.
LangackerRW (2000) Grammar and conceptualization. Berlin: De Gruyter Mouton.
31.
LevineG (2000) Incomplete first-language acquisition in bilingual situations: Yiddish in the United States. Linguistische Arbeiten 426. Tübingen: Max Niemeyer Verlag.
32.
MarcusGFPinkerSUllmanMT, et al. (1992) Overregularization in language acquisition. Monographs of the Society for Research in Child Development57: 1–178.
33.
MasonSA (2019) The influence of task factors and language background on morphological processing in Spanish. Unpublished PhD thesis, University of Illinois at Urbana-Champaign, Champaign, IL, USA.
34.
MichonENakipoğluM (2019) Rule-based vs. similarity-based generalization: An experimental study on the Turkish aorist. Presented at the 12th Mediterranean Morphology Meeting, Ljubljana, Slovenia.
35.
MontrulS (2002) Incomplete acquisition and attrition of Spanish tense/aspect distinctions in adult bilinguals. Bilingualism: Language and Cognition5: 39–68.
36.
MontrulS (2004) The acquisition of Spanish: Morphosyntactic development in monolingual and bilingual L1 acquisition and in adult L2 acquisition. Amsterdam: John Benjamins.
37.
MontrulS (2016) The acquisition of heritage languages. Cambridge: Cambridge University Press.
38.
MontrulSMasonSA (2020) Smaller vocabularies lead to morphological overregularization in heritage language grammars. Bilingualism: Language and Cognition23: 35–36.
39.
NakipoğluMKetrezN (2006) Children’s overregularizations and irregularizations of the Turkish aorist. In: BammanDMagnitskaiaTZallerC (eds) Proceedings of the 30th Annual Boston University Conference on Language Development. Somerville, MA: Cascadilla Press, pp. 399–410.
40.
OrsoliniMMarslen-WilsonW (1997) Universals in morphological representation: Evidence from Italian. Language and Cognitive Processes12: 1–47.
41.
PinkerS (1999) Words and rules. New York: Basic Books.
42.
PolinskyM (2000) The composite linguistic profile of speakers of Russian in the US. In: KaganORifkinB (eds) The learning and teaching of Slavic languages and cultures. Bloomington, IN: Slavica, pp. 437–65.
43.
PolinskyM (2006) Incomplete acquisition: American Russian. Journal of Slavic Linguistics14: 161–219.
44.
PolinskyM (2008) Russian gender under incomplete acquisition. Heritage Language Journal6: 40–71.
45.
PolinskyM (2018) Heritage languages and their speakers. Cambridge: Cambridge University Press.
46.
PolinskyMKaganO (2007) Heritage languages: In the wild and in the classroom. Language and Linguistics Compass1: 368–95.
47.
PolinskyMScontrasG (2020) Understanding heritage languages. Bilingualism: Language and Cognition23: 4–20.
48.
PrasadaSPinkerS (1993) Generalizations of regular and irregular morphology. Language and Cognitive Processes8: 1–56.
49.
PutnamMT (2019) The (in)stability of grammars. Studies in Second Language Acquisition41: 275–78.
50.
R Development Core Team (2017) R: A language and environment for statistical computing [software]. Vienna: R Foundation for Statistical Computing. Available at: http://www.R-project.org (accessed October 2021).
51.
RomanovaN (2008) Mechanisms of verbal morphology processing in heritage speakers of Russian. Heritage Language Journal6: 105–26.
52.
RumelhartDEMcClellandJL (1986) On learning the past tenses of English verbs. In: McClellandJLRumelhartDE, and the PDP Research Group (eds) Parallel distributed processing: Explorations in the microstructure of cognition: Volume 2: Psychological and biological models. Cambridge, MA: MIT Press, pp. 216–71.
53.
SayTClahsenH (2002) Words, rules and stems in the Italian mental lexicon. In: NooteboomSWeermanFWijnenF (eds) Storage and computation in the language faculty. Dordrecht: Springer, pp. 93–129.
54.
ScontrasGPolinskyMFuchsZ (2018) In support of representational economy: Agreement in heritage Spanish. Glossa: A Journal of General Linguistics3: 1–29.
55.
SeligerHWVagoRM (1991) First language attrition. Cambridge: Cambridge University Press.
56.
SezerT (2017) TS corpus project: An online Turkish dictionary and TS DIY corpus. European Journal of Language and Literature9: 18–24.
57.
Silva-CorvalánC (1994) Language contact and change. Oxford: Clarendon Press.
58.
SmolenskyPGoldrickMMathisD (2014) Optimization and quantization in gradient symbol systems: A framework for integrating the continuous and the discrete in cognition. Cognitive Science38: 1102–38.
59.
StavrakakiSClahsenH (2009) The perfective past tense in Greek child language. Journal of Child Language36: 113–42.
60.
telc gGmbH (2015) Kompetenzcheck Deutsch Beruf A1-A2-B1-B2-C1 [Competence check German profession A1-A2-B1-B2-C1]. 1st edition. Frankfurt am Main: TELC.
61.
VenablesWNRipleyBD (2002) Modern applied statistics with S. 4th edition. New York: Springer.
62.
VeríssimoJClahsenH (2014) Variables and similarity in linguistic generalization: Evidence from inflectional classes in Portuguese. Journal of Memory and Language76: 61–79.
63.
WilsonC (2006) Learning phonology with substantive bias: An experimental and computational study of velar palatalization. Cognitive Science30: 945–82.
64.
YavuzH (2011) Turkish consonants. In: BalpınarZ (ed.) Turkish phonology and morphology. Eskişehir: Anadolu University Press, pp. 14–31.
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