Task Design in L2 Tense and Aspect Research- What matters-.ppt
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1、Task Design in L2 Tense and Aspect Research: What matters?,Nicole Tracy-Ventura Laura DominguezUniversity of Southampton,Contact email: N.Tracy-Venturasoton.ac.uk,Spanish Learner Language Oral Corpus Project,Collaboration between the Universities of Southampton, Newcastle, and Greenwich. Additional
2、Team Members: Rosamond Mitchell, Florence Myles, and Mara Arche Tim Boardman, web design and IT supportPrevious Projects: SPLLOC 1 (www.splloc.soton.ac.uk) FLLOC (www.flloc.soton.ac.uk),SPLLOC 2,Main Goal: to test the validity of the Aspect and the Discourse Hypotheses with reference to the acquisit
3、ion of perfective and imperfective forms in L2 Spanish.Relevant features: Cross-sectional design with native speaker controls A combination of different task types Data available online for use by other researchersAudio files (mp3 & .wav)Transcripts (CHILDES)Tagged files (MOR),Perfective and Imperfe
4、ctive forms in Spanish,Perfective (preterit): bounded Llegu tarde. (I arrived late.) Preparaste el almuerzo. (You prepared lunch.) Ella pint. (She painted).Imperfective (imperfect): unbounded Llegaba tarde. (I would arrive late/was arriving late) Ella preparaba el almuerzo cuando (She was preparing
5、lunch when) Estaban cansados. (They were tired),SPLLOC 2 Research Questions:,Emergence: What is the pattern of Tense-Aspect development of English L2 learners of Spanish? AH VS DH: Can the observed pattern be accounted for by the Aspect Hypothesis, the Discourse Hypothesis, or both? Acquisition of I
6、mperfective Semantic meanings: Which reading is the imperfect associated with in the first place (habitual, continuous, progressive)?,L2 Tense and Aspect Research,Various hypotheses proposed to explain the L2 acquisition of tense-aspect morphology. For example: Aspect Hypothesis (Andersen & Shirai,
7、1994,1996) Discourse Hypothesis (Bardovi-Harlig, 1998) Default Past Tense Hypothesis (Salaberry, 1999, 2008) Distributional Bias Hypothesis (Andersen, 1994) Minimalist Hypothesis (Montrul & Slabakova, 2002)Despite a large body of research, still several issues to be resolved: Inconclusive results wh
8、en comparing competing hypotheses (AH vs. DH). Acquisition of the imperfective has not been adequately addressed (Bardovi-Harlig, 2005).,Aspect Hypothesis (Andersen & Shirai, 1994, 1996),Perfective and Imperfective morphology emerge in a sequence determined by the inherent semantic properties of the
9、 verbal predicate Achievements (recognize, wake up) Accomplishments (build a house, write a letter) Activities (swim, walk, sing) States (be, want, love),Telic,Atelic,Aspect Hypothesis predictions for Spanish,PERFECTIVE: ACH ACC ACT STAtelic atelicIMPERFECTIVE: STA ACT ACC ACHatelic telic,Prototypic
10、al Pairings: acquired first,PERFECTIVE: ACH ACC ACT STAtelic atelicIMPERFECTIVE: STA ACT ACC ACHatelic telic,Non-Prototypical Pairings: acquired later,PERFECTIVE: ACH ACC ACT STAtelic atelicIMPERFECTIVE: STA ACT ACC ACHatelic telic,Discourse Hypothesis (Bardovi-Harlig 1998),L2 learners use of tempor
11、al-aspectual forms is guided by narrative structureFOREGROUND moves time along chronologically PERFECTIVE BACKGROUND supporting information, description, evaluation, prediction IMPERFECTIVE,Studies testing the DH vs. AH,For example: Bardovi-Harlig (1998) Liskin-Gasparro (2000) Lpez-Ortega (2000) Com
12、ajoan & Prez Saldanya (2005) Salaberry (2009)Results complicated because the cases where the hypotheses make opposite predictions have been difficult to elicit using more free and open-ended tasks,Non-Prototypical Pairings,What about the elusive imperfect? (Bardovi-Harlig, 2005),The imperfect has mu
13、ltiple semantic interpretations but research has rarely taken this into consideration.(e.g., habitual, progressive, continuous)Are there meanings of the imperfect acquired before others?,In sum,Various hypotheses have been proposed to explain the acquisition of past tense morphology. How do we make
14、sense of all the results?Ayoun & Salaberry (2005) suggest that its not that one hypothesis is right and another is wrong. Each hypothesis might explain a different stage of development.However, What if our elicitation tasks are to blame? Most studies have not designed tasks considering prototypical
15、and nonprototypical forms and discourse role.,Elicitation Tasks in Tense-Aspect Research,Oral: Personal narratives Impersonal narratives(e.g., Modern Times) Role-plays Interviews and semi-structured interviews Free conversation,Written: Personal narratives Impersonal narratives Essays/compositions M
16、ultiple choice Fill-in-the-blank Appropriateness judgments Sentence conjunction,*Most studies use one or two task types, not a range.,Issues with Tasks,Problems eliciting past tense morphology with prompts such as “What happened in the story”: Learners and NS use historical present Learners and NS f
17、ocus on main events, i.e., foreground and not as much on background.Few nonprototypical pairings occur naturally Lafford (1996) no nonprototypical imperfect pairings,Task type can affect:,1. amount of lexical diversity Film retells much higher percentage of achievement verbs than the three other lex
18、ical aspect classes (Bardovi-Harlig, 2000) 2. amount of foreground and background Impersonal narratives more examples of foreground than background (Liskin-Gasparro, 2000). personal narratives usually less constrained and often include more background (Bardovi-Harlig, 2005).3. rates of appropriate u
19、se Learners most accurate with cloze tests, then written retells, then spoken retells (Bardovi-Harlig, 1998; Camps, 2002),Conclusions,Need tasks that accomplish the following: naturally elicit the past tense elicit a variety of verb types in both prototypical and nonprototypical pairings. are rich i
20、n background (vs. foreground). elicit the imperfect with different meanings (habitual, progressive, continuous).Need to have the same learners (across proficiency levels) do a variety of text and task types: Narratives, description, biographical controlled vs. less controlled production and comprehe
21、nsion,SPLLOC 2 Participants,Post Year Abroad,SPLLOC 2 Tasks,Las Hermanas: controlled impersonal narrative,Main task design issues: How to prompt learners to tell the story in the past How to demonstrate habituality with a picture-based narrative How to find pictures to demonstrate prototypical and n
22、onprototypical pairings,Las Hermanas: controlled impersonal narrative,Written by the research team Drawn by a hired artist SPLLOC 2009 Verb phrases provided (infinitive form) Targeted nonprototypical pairings (where AH & DH make opposite predictions),Las vacaciones de Sarah y Gwen en Espaa,Verano de
23、l 2006,Sarah,Gwen,Prompt to push use of past,(visitar) la ciudad,(comer) tapas (beber) vino,Foreground:,En MADRID,(coger) el tren,(hablar) sobre su niez,Despus decidieron ir a Barcelona,Prompt to push use of past,1996,De pequeas, (ser) muy diferentes,Background begins:,Prompts to push use of past,Gw
24、en de niacada fin de semana,(leer) un libro,(pintar) un cuadro,(escribir) un cuento,Prompt to push use of habitual past,Cat Story: Impersonal narrative,Story adapted from “Missing“ by Jonathan Langley Francais Lincoln 2000 Rich in background information, both habitual actions and progressive. Learne
25、rs were given time to preview the story before starting.Task Design Issues: same as other narrative,Prompt: Start of Background,Todas las maanas eran iguales(Every morning was the same),Prompt to push use of past and to be habitual,Prompt: Start of Foreground,Hasta que un da (Until one day),Intervie
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