The current study investigated the facilitatory effects of High Variability Phonetic Training (HVPT) in second language (L2) categorical perception (CP) of Mandarin lexical tones. It also explored whether and how individual differences in auditory processing predicted gains from such training. The participants were 32 native English-speaking adults aged over 60 years who were learning Mandarin Chinese as their L2. They were randomly divided into the HVPT group (HG) (n = 16) and the control group (CG) (n = 16). Their L2 CP performance was assessed through an identification task and discrimination task before training, immediately after training, and two months later. Auditory processing tests were also conducted to measure the participants’ ability to encode spectral and temporal details of sounds. Linear mixed-effects (LME) models showed that, compared to the CG, the HG exhibited a more pronounced improvement in tonal categorization. Furthermore, regression analysis confirmed that individual differences in perceptual acuity significantly predicted gains from training in L2 CP of Mandarin lexical tones.
AlshangitiW.EvansB.G.WibrowM. (2023). Investigating the effects of speaker variability on Arabic children’s acquisition of English vowels. Arab World English Journal (AWEJ), 14, 3–27.
2.
AntoniouM.GunasekeraG.M.WongP.C. (2013). Foreign language training as cognitive therapy for age-related cognitive decline: A hypothesis for future research. Neuroscience and Biobehavioral Reviews, 37, 2689–2698.
3.
BatesD.MächlerM.BolkerB.WalkerS. (2015). Fitting linear mixed-effects models using lme4. Journal of Statistical Software, 67, 1–48.
4.
BenjaminiY.YekutieliD. (2001). The control of the false discovery rate in multiple testing under dependency. Annals of Statistics, 29, 1165–1188.
5.
Bernal CastañedaS. (2017). Lifelong learning and limiting factors in second language acquisition for adult students in post-obligatory education. Cogent Psychology, 4, 1404699.
6.
BestC.T. (1994). The emergence of native-language phonological influences in infants: A perceptual assimilation model. In GoodmanJ.C.NusbaumH.C. (Eds.), The development of speech perception: The transition from speech sounds to spoken words (pp. 167–224). MIT Press.
7.
BidelmanG.M.LeeC.-C. (2015). Effects of language experience and stimulus context on the neural organization and categorical perception of speech. Neuroimage, 120, 191–200.
8.
BoersmaP.WeeninkD. (2017). Praat, a system for doing phonetics by computer: Version 6.0. 28. Unpublished paper presented at the Institute of Phonetic Sciences University of Amsterdam, Amsterdam, The Netherlands.
9.
BorellaE.CarrettiB.De BeniR. (2008). Working memory and inhibition across the adult life-span. Acta Psychologica, 128, 33–44.
10.
BradlowA.R.PisoniD.B.Akahane-YamadaR.TohkuraY.I. (1997). Training Japanese listeners to identify English /r/ and /l/: IV. Some effects of perceptual learning on speech production. The Journal of the Acoustical Society of America, 101, 2299–2310.
CarletA.CebrianJ. (2019). Assessing the effect of perceptual training on L2 vowel identification, generalization and long-term effects. In NyvadA.M.HejnáM.HøjenA.JespersenA.B.SørensenM.H. (Eds.), A sound approach to language matters (pp. 91–119). Aarhus University.
13.
ChenF.PengG.YanN.WangL. (2017). The development of categorical perception of Mandarin tones in four- to seven-year-old children. Journal of Child Language, 44, 1413–1434.
14.
CohenJ. (2013). Statistical power analysis for the behavioral sciences. Routledge.
15.
CoxJ.G. (2017). Explicit instruction, bilingualism, and the older adult learner. Studies in Second Language Acquisition, 39, 29–58.
16.
CurtissS. (2014). Genie: A psycholinguistic study of a modern-day wild child. Academic Press.
17.
CutlerA.ButterfieldS. (1992). Rhythmic cues to speech segmentation: Evidence from juncture misperception. Journal of Memory and Language, 31, 218–236.
18.
DerwingT.M.MunroM.J. (2013). The development of L2 oral language skills in two L1 groups: A 7-year study. Language Learning, 63, 163–185.
19.
DewaeleJ.M.WitneyJ.SaitoK.DewaeleL. (2018). Foreign language enjoyment and anxiety: The effect of teacher and learner variables. Language Teaching Research, 22, 676–697.
20.
FengY.PengG.WangW.S.Y. (2022). Categorical perception of lexical tones in Mandarin-speaking seniors. Journal of Speech, Language, and Hearing Research, 65, 2789–2800.
21.
FinneyD. (1971). Statistical logic in the monitoring of reactions to therapeutic drugs. Methods of Information in Medicine, 10, 237–245.
22.
FlegeJ.E. (1995). Second language speech learning: Theory, findings, and problems. In StrangeW. (Ed.), Speech perception and linguistic experience: Issues in cross-language research (pp. 233–277). York Press.
23.
FlegeJ.E. (1999). Age of learning and second language speech. In BirdsongD. (Ed.), Second language acquisition and the critical period hypothesis (pp. 111–142). Routledge.
24.
FlegeJ.E.BohnO.-S. (2021). The revised speech learning model (SLM-r). In WaylandR. (Ed.), Second language speech learning: Theoretical and empirical progress (pp. 3–83). Cambridge University Press.
25.
FlegeJ.E.MacKayI.R. (2004). Perceiving vowels in a second language. Studies in Second Language Acquisition, 26, 1–34.
26.
FlegeJ.E.Yeni-KomshianG.H.LiuS. (1999). Age constraints on second-language acquisition. Journal of memory and language, 41(1), 78–104.
27.
FostickL.Taitelbaum-SweadR.KreitlerS.ZokrautS.BilligM. (2020). Auditory training to improve speech perception and self-efficacy in aging adults. Journal of Speech, Language, and Hearing Research, 63, 1270–1281.
28.
FrancisA.L.CioccaV.Chit NgB.K. (2003). On the (non) categorical perception of lexical tones. Perception and Psychophysics, 65, 1029–1044.
29.
FraserH.AshbyM. (2011). Teaching teachers to teach /r/ and /l/ to Japanese learners of English: An integrated approach. In AshbyM. (Ed.), Proceedings of the phonetics teaching and learning conference (pp. 11–15). University College London.
30.
GeorgiouG.P. (2021). Effects of phonetic training on the discrimination of second language sounds by learners with naturalistic access to the second language. Journal of Psycholinguistic Research, 50, 707–721.
31.
GeorgiouG.P. (2022). The impact of auditory perceptual training on the perception and production of English vowels by Cypriot Greek children and adults. Language Learning and Development, 18, 379–392.
32.
GodfroidA.LinC.H.RyuC. (2017). Hearing and seeing tone through color: An efficacy study of web-based, multimodal Chinese tone perception training. Language Learning, 67, 819–857.
33.
HalléP.A.ChangY.-C.BestC.T. (2004). Identification and discrimination of Mandarin Chinese tones by Mandarin Chinese vs. French listeners. Journal of Phonetics, 32, 395–421.
34.
HaoY.C. (2012). Second language acquisition of Mandarin Chinese tones by tonal and non-tonal language speakers. Journal of Phonetics, 40, 269–279.
35.
HazanV.SennemaA.IbaM.FaulknerA. (2005). Effect of audiovisual perceptual training on the perception and production of consonants by Japanese learners of English. Speech Communication, 47, 360–378.
36.
HomaD.CulticeJ.C. (1984). Role of feedback, category size, and stimulus distortion on the acquisition and utilization of ill-defined categories. Journal of Experimental Psychology: Learning, Memory, and Cognition, 10, 83–94.
37.
HuenschA.TremblayA. (2015). Effects of perceptual phonetic training on the perception and production of second language syllable structure. Journal of Phonetics, 52, 105–120.
38.
HumesL.E.KiddG.R.LentzJ.J. (2013). Auditory and cognitive factors underlying individual differences in aided speech-understanding among older adults. Frontiers in Systems Neuroscience, 7, 55.
InceogluS. (2019). Individual differences in L2 speech perception: The role of phonological memory and lipreading ability. The Modern Language Journal, 103, 782–799.
41.
IversonP.KuhlP.K.Akahane-YamadaR., et al. (2003). A perceptual interference account of acquisition difficulties for non-native phonemes. Cognition, 87, B47–B57.
42.
IversonP.PinetM.EvansB.G. (2012). Auditory training for experienced and inexperienced second-language learners: Native French speakers learning English vowels. Applied Psycholinguistics, 33, 145–160.
43.
JiaG.StrangeW.WuY.ColladoJ.GuanQ. (2006). Perception and production of English vowels by Mandarin speakers: Age-related differences vary with amount of L2 exposure. The Journal of the Acoustical Society of America, 119, 1118–1130.
44.
JiangC.HammJ.P.LimV.K.KirkI.J.YangY. (2012). Impaired categorical perception of lexical tones in Mandarin-speaking congenital amusics. Memory and Cognition, 40, 1109–1121.
45.
JoanisseM.F.SeidenbergM.S. (1998). Specific language impairment: A deficit in grammar or processing?Trends in Cognitive Sciences, 2, 240–247.
46.
JohnsonJ.S.NewportE.L. (1989). Critical period effects in second language learning: The influence of maturational state on the acquisition of English as a second language. Cognitive Psychology, 21, 60–99.
47.
KachlickaM.SaitoK.TierneyA. (2019). Successful second language learning is tied to robust domain-general auditory processing and stable neural representation of sound. Brain and Language, 192, 15–24.
48.
KimY.H.HazanV. (2010). Individual variability in the perceptual learning of L2 speech sounds and its cognitive correlates. School of English, Adam Mickiewicz University.
49.
KuhlP.K. (2004). Early language acquisition: Cracking the speech code. Nature Reviews Neuroscience, 5, 831–843.
50.
LakensD.CaldwellA.R. (2021). Simulation-based power analysis for factorial analysis of variance designs. Advances in Methods and Practices in Psychological Science, 4. Online publication. https://doi.org/10.1177/2515245920951503.
51.
LenetA.E.SanzC.LadoB., et al. (2011). Aging, pedagogical conditions, and differential success in SLA: An empirical study. In SanzC.LeowR.P. (Eds.), Implicit and explicit language learning: Conditions, processes, and knowledge in SLA and bilingualism (pp. 73–84). Georgetown University Press.
52.
LengerisA.HazanV. (2010). The effect of native vowel processing ability and frequency discrimination acuity on the phonetic training of English vowels for native speakers of Greek. The Journal of the Acoustical Society of America, 128, 3757–3768.
53.
LenthR.LenthM.R. (2018). Package ‘lsmeans’. The American Statistician, 34, 216–221.
54.
LevittH. (1971). Transformed up-down methods in psychoacoustics. The Journal of the Acoustical Society of America, 49, 467–477.
55.
LiY.L. (2016). Effects of high variability phonetic training on monosyllabic and disyllabic Mandarin Chinese tones for L2 Chinese learners. Unpublished doctoral dissertation, University of Kansas, Lawrence, KS, USA.
56.
LibermanA.M.HarrisK.S.HoffmanH.S.GriffithB.C. (1957). The discrimination of speech sounds within and across phoneme boundaries. Journal of Experimental Psychology, 54, 358–368.
57.
LingW.GrüterT. (2022). From sounds to words: The relation between phonological and lexical processing of tone in L2 Mandarin. Second Language Research, 38, 289–313.
58.
LivelyS.E.LoganJ.S.PisoniD.B. (1993). Training Japanese listeners to identify English /r/ and /l/; II: The role of phonetic environment and talker variability in learning new perceptual categories. The Journal of the Acoustical Society of America, 94, 1242–1255.
59.
LoganJ.S.LivelyS.E.PisoniD.B. (1991). Training Japanese listeners to identify English /r/ and /l/: A first report. The Journal of the Acoustical Society of America, 89, 874–886.
60.
LukeS.G. (2017). Evaluating significance in linear mixed-effects models in R. Behavior Research Methods, 49, 1494–1502.
61.
MacmillanN.A.CreelmanC.D. (2004). Detection theory: A user’s guide. Psychology Press.
62.
Marslen-WilsonW.D.TylerL.K.WarrenP.GrenierP.LeeC.S. (1992). Prosodic effects in minimal attachment. The Quarterly Journal of Experimental Psychology, 45, 73–87.
63.
MelnikG.A.PeperkampS. (2021). High-variability phonetic training enhances second language lexical processing: Evidence from online training of French learners of English. Bilingualism: Language and Cognition, 24, 497–506.
64.
MoulinesE.LarocheJ. (1995). Non-parametric techniques for pitch-scale and time-scale modification of speech. Speech Communication, 16, 175–205.
65.
MoyerA. (2014). Exceptional outcomes in L2 phonology: The critical factors of learner engagement and self-regulation. Applied Linguistics, 35, 418–440.
66.
MuellerJ.L.FriedericiA.D.MännelC. (2012). Auditory perception at the root of language learning. Proceedings of the National Academy of Sciences, 109, 15953–15958.
67.
NasreddineZ.S.PhillipsN.A.BédirianV., et al. (2005). The Montreal Cognitive Assessment, MoCA: A brief screening tool for mild cognitive impairment. Journal of the American Geriatrics Society, 53, 695–699.
68.
OkunoT.HardisonD.M. (2016). Perception-production link in L2 Japanese vowel duration: Training with technology. Language Learning and Technology, 20, 61–80.
69.
OmoteA.JasminK.TierneyA. (2017). Successful non-native speech perception is linked to frequency following response phase consistency. Cortex, 93, 146–154.
70.
OxfordR.Gabrys-BarkerD. (2018). A developmental perspective on third-age learning. In Gabrys-BarkerD. (Ed.), Third age learners of foreign languages (pp. 3–18). Multilingual Matters.
71.
ParkD.C.Reuter-LorenzP. (2009). The adaptive brain: Aging and neurocognitive scaffolding. Annual Review of Psychology, 60, 173–196.
72.
PengG.ZhengH.-Y.GongT., et al. (2010). The influence of language experience on categorical perception of pitch contours. Journal of Phonetics, 38, 616–624.
73.
PfenningerS.E.KlieschM. (2023). Variability as a functional marker of second language development in older adult learners. Studies in Second Language Acquisition, 45, 1004–1030.
74.
PfenningerS.E.SingletonD. (2019). Starting age overshadowed: The primacy of differential environmental and family support effects on second language attainment in an instructional context. Language Learning, 69, 207–234.
75.
PlonskyL.OswaldF.L. (2014). How big is ‘big’? Interpreting effect sizes in L2 research. Language Learning, 64, 878–912.
PotA.PorkertJ.KeijzerM. (2019). The bidirectional in bilingual: Cognitive, social and linguistic effects of and on third-age language learning. Behavioral Sciences, 9, 98.
78.
QinZ.ZhangC.WangW.S.-y. (2021). The effect of Mandarin listeners’ musical and pitch aptitude on perceptual learning of Cantonese level-tones. The Journal of the Acoustical Society of America, 149, 435–446.
79.
RuanY.SaitoK. (2023). Less precise auditory processing limits instructed L2 speech learning: Communicative focus on phonetic form revisited. System, 114, 103020.
80.
SadakataM.McQueenJ.M. (2014). Individual aptitude in Mandarin lexical tone perception predicts effectiveness of high-variability training. Frontiers in Psychology, 5, 1318.
81.
SaitoK. (2023). How does having a good ear promote successful second language speech acquisition in adulthood? Introducing auditory precision hypothesis-L2. Language Teaching, 56, 522–538.
82.
SaitoK.CuiH.SuzukidaY., et al. (2022). Does domain-general auditory processing uniquely explain the outcomes of second language speech acquisition, even once cognitive and demographic variables are accounted for?Bilingualism: Language and Cognition, 25, 856–868.
83.
SaitoK.HanzawaK.PetrovaK., et al. (2022). Incidental and multimodal high variability phonetic training: Potential, limits, and future directions. Language Learning, 72, 1049–1091.
84.
SaitoK.KachlickaM.SuzukidaY., et al. (2024). Auditory processing as perceptual, cognitive, and motoric abilities underlying successful second language acquisition: Interaction model. Journal of Experimental Psychology: Human Perception and Performance, 50, 119–138.
85.
SaitoK.SunH.KachlickaM.AlayoJ.R.C.NakataT.TierneyA. (2022). Domain-general auditory processing explains multiple dimensions of L2 acquisition in adulthood. Studies in Second Language Acquisition, 44, 57–86.
86.
SaitoK.SunH.TierneyA. (2019). Explicit and implicit aptitude effects on second language speech learning: Scrutinizing segmental and suprasegmental sensitivity and performance via behavioural and neurophysiological measures. Bilingualism: Language and Cognition, 22, 1123–1140.
87.
SaitoK.SuzukidaY.TranM.TierneyA. (2021). Domain-general auditory processing partially explains second language speech learning in classroom settings: A review and generalization study. Language Learning, 71, 669–715.
88.
SaitoK.TierneyA. (2022). Domain-general auditory processing as a conceptual and measurement framework for second language speech learning aptitude: A test-retest reliability study. Studies in Second Language Acquisition. Advance online publication. https://doi.org/10.1017/S027226312200047X
89.
SakaiM.MoormanC. (2018). Can perception training improve the production of second language phonemes? A meta-analytic review of 25 years of perception training research. Applied Psycholinguistics, 39, 187–224.
90.
SalthouseT.A. (2010). Influence of age on practice effects in longitudinal neurocognitive change. Neuropsychology, 24, 563–572.
91.
SchlomannA.SeifertA.ZankS.WoopenC.RietzC. (2020). Use of information and communication technology (ICT) devices among the oldest-old: Loneliness, anomie, and autonomy. Innovation in Aging, 4, igz050.
92.
ShaoY.SaitoK.TierneyA. (2023). How does having a good ear promote instructed second language pronunciation development? Roles of domain-general auditory processing in choral repetition training. TESOL Quarterly, 57, 33–63.
93.
ShenG.FroudK. (2016). Categorical perception of lexical tones by English learners of Mandarin Chinese. The Journal of the Acoustical Society of America, 140, 4396–4403.
94.
ShinoharaY. (2014). Perceptual training of English /r/ and /l/ for Japanese adults, adolescents and children. Unpublished doctoral thesis, University College London, London, UK.
95.
ShinoharaY.IversonP. (2018). High variability identification and discrimination training for Japanese speakers learning English /r/–/l/. Journal of Phonetics, 66, 242–251.
96.
ShumK.K.-m.AuT.K.-f.RomoL.F.JunS.-A. (2021). Learning challenging L2 sounds via computer training: High-variability perceptual training for children and adults. Language Learning and Development, 17, 327–342.
97.
SunH.SaitoK.TierneyA. (2021). A longitudinal investigation of explicit and implicit auditory processing in L2 segmental and suprasegmental acquisition. Studies in Second Language Acquisition, 43, 551–573.
98.
SuzukidaY. (2021). The contribution of individual differences to L2 pronunciation learning: Insights from research and pedagogical implications. RELC Journal, 52, 48–61.
99.
SwainM.LapkinS. (2011). Languaging as agent and constituent of cognitive change in an older adult: An example. Canadian Journal of Applied Linguistics, 14, 104–117.
100.
ThomsonR.I. (2012). Improving L2 listeners’ perception of English vowels: A computer-mediated approach. Language Learning, 62, 1231–1258.
101.
TierneyA.KrausN. (2014). Auditory-motor entrainment and phonological skills: precise auditory timing hypothesis (PATH). Frontiers in Human Neuroscience, 8, 949.
102.
TierneyA.White-SchwochT.MacLeanJ.KrausN. (2017). Individual differences in rhythm skills: Links with neural consistency and linguistic ability. Journal of Cognitive Neuroscience, 29, 855–868.
103.
WangX. (2013). Perception of Mandarin tones: The effect of L1 background and training. The Modern Language Journal, 97, 144–160.
104.
WangY.ChristiansenM.S. (2019). An Investigation of Chinese older adults’ self-directed English learning experience using mobile apps. International Journal of Computer-Assisted Language Learning and Teaching (IJCALLT), 9, 51–71.
105.
WangY.JongmanA.SerenoJ.A. (2003). Acoustic and perceptual evaluation of Mandarin tone productions before and after perceptual training. The Journal of the Acoustical Society of America, 113, 1033–1043.
106.
WangY.SpenceM.M.JongmanA.SerenoJ.A. (1999). Training American listeners to perceive Mandarin tones. The Journal of the Acoustical Society of America, 106, 3649–3658.
107.
WangY.YangX.ZhangH.XuL.XuC.LiuC. (2017). Aging effect on categorical perception of Mandarin tones 2 and 3 and thresholds of pitch contour discrimination. American Journal of Audiology, 26, 18–26.
108.
WareC.DamneeS.DjabelkhirL.CristanchoV.WuY.-H.BenoviciJ.BenoviciJ.PinoM.RigaudA.-S. (2017). Maintaining cognitive functioning in healthy seniors with a technology-based foreign language program: A pilot feasibility study. Frontiers in Aging Neuroscience, 9, 42.
109.
WerkerJ.F.TeesR.C. (1999). Influences on infant speech processing: Toward a new synthesis. Annual Review of Psychology, 50, 509–535.
110.
WienerS.ChanM.K.ItoK. (2020). Do explicit instruction and high variability phonetic training improve nonnative speakers’ Mandarin tone productions?The Modern Language Journal, 104, 152–168.
111.
XiJ.XuH.ZhuY., et al. (2021). Categorical perception of Chinese lexical tones by late second language learners with high proficiency: Behavioral and electrophysiological measures. Journal of Speech, Language, and Hearing Research, 64, 4695–4704.
112.
XuY.GandourJ.T.FrancisA.L. (2006). Effects of language experience and stimulus complexity on the categorical perception of pitch direction. The Journal of the Acoustical Society of America, 120, 1063–1074.
113.
YuK.LiL.ChenY., et al. (2019). Effects of native language experience on Mandarin lexical tone processing in proficient second language learners. Psychophysiology, 56, e13448.
114.
ZhangH.MaW.DingH.ZhangY. (2023). Sustainable benefits of high variability phonetic training in Mandarin-speaking kindergarteners with cochlear implants: Evidence from categorical perception of lexical tones. Ear and Hearing, 44, 990–1006.
115.
ZhangW.LiaoY. (2023). The role of auditory processing in L2 vowel learning: evidence from recasts. Humanities and Social Sciences Communications, 10, 1–14.
116.
ZhangX.ChengB.QinD.ZhangY. (2021). Is talker variability a critical component of effective phonetic training for nonnative speech?Journal of Phonetics, 87, 101071.
117.
ZhangX.ChengB.ZhangY. (2021). The role of talker variability in nonnative phonetic learning: A systematic review and meta-analysis. Journal of Speech, Language, and Hearing Research, 64, 4802–4825.
118.
ZhaoT.C.KuhlP.K. (2015). Effect of musical experience on learning lexical tone categories. The Journal of the Acoustical Society of America, 137, 1452–1463.
