Psycholinguistics: The Psychology of Language Language Acquisition.
Psycholinguistics - uni-saarland.de is Psycholinguistics? - Which psychological and neurological...
Transcript of Psycholinguistics - uni-saarland.de is Psycholinguistics? - Which psychological and neurological...
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Psycholinguistics
Preparatory course Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
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Outline
I What is Psycholinguistics?
II The Computational Psycholinguistics Group at Saarland UniversityIndividual Presentations by the group members
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
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What is Psycholinguistics?
- Which psychological and neurological factors underlie language acquisition, language production and language comprehension?
Psycholinguistics is the study of the mental representations andprocesses that are involved human language processing
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
- What are the architectures and mechanisms of language processing?
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Human Language Processing
very fast, seemingly effortless, mostly correct, excellent coverage
Human language processing is incredibly efficient
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Compare with Computational Language Processing Systems
very fast, seemingly effortless, mostly correct, excellent coverage
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Language Processing: Complex
- huge number of words
- polysemic and homonymic words
- infinite number of sentences
- syntactic ambiguity
- role of general world knowledge
- context dependencies
- …
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
���� It is not surprising that computational language processing systems are not better than they are
���� It is surprising that human language processing is that good as it is
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Human Language Processing: Areas
Language Comprehension
Language Production
Language Acquisition
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
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Language Comprehension
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Subprocesses of language comprehension?
word recognition(accessing themental lexicon)
parsing (determiningsyntactic structure)
semantic interpretation(word and sentencemeaning)
model construction (referentialrepresentation)
pragmaticinterpretation
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Language Production
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Subprocesses of language production?
conceptualization
lexicalization syntactic planning
phonologicalencoding
articulation
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Language Acquisition
Language Acquisition: Domains
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
conceptual knowledge
lexical knowledge
syntactic knowledge
semantic knowledge
pragmatic knowledge
first language (L1)
second language (L2)
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Psycholinguistics: Meth. Approaches
Psycholinguistics studies the different subprocesses of language comprehension, language production and domains of language acquisition
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Methodological approaches in Psycholinguistics
Experiment (central approach)
Computational Modeling
Case Studies (e.g., patients, feral children)
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Experiment / Computational Modeling
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Experimenttesting a prediction that is derived from a theory
goal: providing empirical support for the theory
Computational Modelingmodeling of cognitive processes (psycholinguistics: language processes)
implementation of theoretical assumptions
requires a precise formulation of the assumptions
goals: simulating of empirical data
derivation of novel predictions (that are to be tested in experiments)
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More on Experiments
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Experiment- allows for a systematic observation of a particular behaviour
under controlled circumstances- manipulation of conditions � effect on behaviour- testing of prediction: behavioural differences between conditions- observed differences are attributed to manipulation of conditions � conditions should only differ with regard to manipulation
- manipulated variable: independent variable / factor- observed behaviour: dependent variable
- statistical tests: testing whether an observed difference is significant (roughly speaking: whether it is not due to chance)
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Experiment: Example
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Prediction: Complex temporal sentences are more difficult to process when the order of mention of the two events mentioned in the main and subordinate clause does not match the order of occurrence compared to when there is a match between order of mention and order of occurrence.e.g., Anna baked some cookies, after she baked a cake. / After Anna baked a cake, she baked some cookies.
Material: 16 experimental sentences, each in 2 versions (non-chrono-logical and chronological); 20 filler sentences (to conceal the experiment’s purpose)
Procedure: Participants read the sentences (8 non-chronological, 8 chrono-logical and the fillers) from a computer screen, self-paced (key press � next sentence)Recording of reading times
Independent Variable: order of mention � 2 conditions: non-chronological vs. chronological
Dependent Variable: Reading time
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Experiment: Extended Example
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Prediction: Non-chronological complex temporal sentences are more difficult to process than chronological sentences, but the difference is larger with the connective after than with the connective beforee.g., Anna baked some cookies, after she baked a cake. / After Anna baked a cake, she baked some cookies. / Before Anna baked a cake, she baked some cookies. / Anna baked some cookies, after she baked a cake.
Material: 32 experimental sentences, each in 2 x 2 versions (non-chronological with after, chronological with after, non-chronological with before, chronological with before); 40 filler sentences
Independent Variables:(1) order of mention: non-chronological vs. chronological(2) type of connective: after vs. before� 2 x2 = 4 conditions
Dependent Variable: Reading time
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Methods / Independent Variables
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Measuring of timeReading times, Reaction times, Response times, Naming times
Eye-movement data- in written language comprehension- in language production (eye movements on to be described pictures)- in spoken language comprehension� visual-world paradigm: participants listen to words or sentences and
simultaneously view pictures (eye movements on pictures)
Neuroscientific measures – measuring brain activationevent-related potentials (ERP), functional magnetic resonance imaging (fMRI)
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Simulating an Experiment
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Say the name of the word on the next slide
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BLUE
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Simulating an Experiment
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Say the name of the word on the next slide
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GREEN
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Simulating an Experiment
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Say the name of the colour on the next slide
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BLUE
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Simulating an Experiment
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Say the name of the colour on the next slide
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GREEN
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Stroop-Effect
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
What was more difficult / what was easier: word naming or colour naming?
Stroop-EffectColour naming: interference, when colour and word content mismatchWord naming: no interference
Does the Stroop-Effect tell us something about word recognition?
� Stroop-Effect suggests that word recognition is automatic
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Read the following text beginning
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
John was on his way to school. He was terribly worried about themaths lesson.He thought he might not be able to control the classagain today.
Did you encounter difficulties when reading the last sentence?
Why – what’s the problem?
What does this tell us about text comprehension?
Comprehension can be constrained by inferences
Suppose, you wanted to test the inference-effect in an experiment� How would you do this?
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Why to bother about Psycholing.?
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
- insights from psycholinguistic research may sometimes be helpful with regard to computational linguistics
- there is a trend towards experimental research in linguistics �knowledge about psycholinguistics/experimental methods provides a background to evaluate this work
- local reason : the M.Sc. in Language Science and Technologyincludes the possibility to specialize in ComputationalPsycholinguistics
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Computational Psycholinguistics Group
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
http://www.coli.uni-saarland.de/groups/MC/index.html
Academic and Research StaffProf. Dr. Matthew Crocker (head of the group)Dr. Afra AlishahiDr. Berry Claus
PhD StudentsEmilia EllsiepenJudith KöhneGarance ParisMaria StaudteJuliane Steinberg
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Research in the Group
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Computational modeling- probabilistic and connectionist models- topics
- lexical processing (bilingual)- syntactic processing- situated language processing (i.e., within a visual environment)- language acquisition
Experimental- behavioural experiments- topics
- lexical processing (situated, bilingual)- sentence processing (syntactic, semantic)- text comprehension- human-robot interaction
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Central Method: Eye Tracking
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Most of the experiments conducted in the Computational Psycholinguistics group are eye tracking studies within the visual world paradigm (presentation of visual scenes + spoken linguistic stimuli and monitoring of eye movements which are elicited by the linguistic stimuli)
Some eye-tracking facilities in our labs- Eye Link: head-mounted eye tracker
- Tobii: remote eye tracker (eye-tracking hardware is embedded in a monitor)
- faceLab: remote eye-trackers (which can be cascaded to track headorientation and eye gaze in up to 270°)
Eye LinkTobiifaceLab
lab tour
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In what follows
Preparatory course M.Sc. Language Science and Technology: PSYCHOLINGUISTICS 10/17/08
Individual presentations by the group members
Juliane Steinberg: lab tour incl. a presentation on speech mediatedattention in virtual environments
Garance Paris: bilingualism and lexical competition
Emilia Ellsiepen: interplay of language processing and visualworking memory in situated languagecomprehension
10:30 - 11:00 coffee break
Maria Staudte: utility of gaze in human-robot interaction
Judith Köhne: syntactic priming in language production
Afra Alishahi: computational modeling of child languageacquisition
Berry Claus: embodied language comprehension and sentence mood