Language And Reading Flashcards
Why does a pattern convey meaning
In learning a language a person learns to associate visual patterns with meanings
Mental Lexicon:
Creating a store of knowledge
How can word recognition be investigated?
Eye tracking
Lexical decision task
Naming task
Eye tracking:
Measure how long people actually spend looking at a word when reading
Lexical decision task:
Measure how long people take to indicate that a string of letters is not a word
Naming task:
Measure how long people take to start saying a word
What is lexical decision often in conjunction with?
Priming
Factors affecting word recognition:
Word frequency
Predictability
Neighbourhood effect
Word frequency:
Commonly used words are recognised more easily than infrequent words
Predictability:
Predictable words are recognised more easily than those in neutral or misleading contexts
Neighbourhood Effects:
Word identification can be speeded when similar words exist in the language
Naming and lexical decision task to test:
Words in isolation
High frequency word
Teacher
Low frequency word
Armadillo
Take longer to recognise
Eye tracking for words:
Presented in context
Predictability
Predictable context
Misleading context
Will using the context to make a word more or less predictable affect word recognition time?
The amount of context was varied
Target word presented at varying exposure durations
Measured: the exposure time necessary for word recognition
Relevant context…
Helps recognition
Misleading context…
Makes recognition difficult
Orthographic neighbourhood:
The number of words that can be formed by changing one letter of a word while maintaining letter position
E.g. Tank, task, rank
Neighbourhood effects and low frequency words:
For low frequency words, recognition is faster for words from large neighbourhoods
Phonological neighbourhood
The number of words that can be formed by changing one phoneme of a word
Eg gait bait get
Phonology:
Information about sounds of words
Neighbourhood effects and phonological words:
Words with many phonological neighbours are more easily recognised
Orthography
Information about spellings of words
Logogen Model Researcher:
Morton
Morton’s Logogen Model
Auditory analysis and visual analysis, cognitive system, logogen system, response buffer, response
Logogens:
Word detectors
Each logogen has an activation threshold which needs to be met before it fires
Analogy for the Logogen Model
Logogen as a collector of evidence
Activation Threshold when enough evidence, logogen fires and the word is recognised
Logogen Frequency
High freq: words have low threshold for firing
Low frequency: words take longer
Explaining context effects
Cognitive component of Logogen Model explains how sentence context can affect recognition
Semantic info from sentence partially activated logogens lowering threshold
Decreases amount of info needed from word itself to fire logogen
Because of the bidirectional flow of info between the cognitive system and logogen system:
Activation from one logogen spreads (indirectly) to those related words
Because activated logogens do not return to their resting level immediately:
The primed target will require less perceptual input to be activated to its individual threshold, and hence less time than an unrelated target
Word superiority effect:
Stimulus, mask, forced choice
Result: 10% improvement in performance with whole word compared to single letter
Conclusion: easier to identify letter in context of a word than isolation
Interactive activation Model connections:
Excitatory
Inhibitory
Connections run in both directions:
So that the network tends to evolve towards a star of activation in which everything is consistent
Transposed letter priming types:
Identity prime, judge-JUDGE
Transposed letter prime jugde
Substitution prime jupte
Spatial coding model researcher:
Davis
Findings can be accounted for in recent models in which position is not fixed
Dual route model, direct route:
Connects the visually presented word to the whole words mental representation (mental lexicon)
Used for high frequency or familiar words
Dual route model, phonological route:
Accesses the mental representations of words using grapheme to phoneme conversion rules
Used for reading low frequency words and non freq words
Problems with routes lead to disorders:
Developmental surface dyslexia
Developmental phonological dyslexia
Phonological dyslexia symptoms:
Difficulty with reading non-words
The only way to read a novel letter string is implement some process of:
Decoding
Phonological dyslexia assumes a:
Selective deficit in developing the phonological route
Applying grapheme-to-phoneme conversion rules has not been mastered or is impaired