Week 6 (Word Recognition) Flashcards
The evolution of reading (brief overview)
200,000 years: First evidence of anatomically modern humans
100,000 years: Evolution of language
5,000 years: Evidence of first writing systems
Similarities of written language to spoken language
Many of the same skills used, e.g,
-Language skills
-Memory
-Executive function
-Attention
-Theory of mind
Differences of written language to spoken language
-Differ in physical form and the social function of the message
-Additional skills needed for both
Differences in physical form between spoken and written language
Auditory Modality VS Visuospatial Modality
Temporary VS Permanent
Additional cues VS Less access to additional cues
Differences in complexity + speed between spoken and written language
-We use more complex and rare
words in written context
-We speak at 150 WPM, but read at 200-300 WPM
Word superiority effect
-Participants perform more accurately when stimulus is a word, than when it is a random letter string
Phoneme
The smallest unit of sound that can alter meaning
Grapheme
Basic unit of written language, a letter or combination of letters corresponding to a phoneme
Grapheme-Phoneme Correspondence
-The spelling-sound mapping rules of the language
-Rules are not simple one-to-one mappings
Regularity and Consistency
Regularity
-Degree to which the particular graphemes of a word correspond to particular phonemes
Consistency
-Is a particular spelling typically pronounced in the same way
Heteronym
-A type of homograph (words with the same spelling)
-Both the meaning AND the pronunciation of a word is different despite using the same spelling
E.G
*Don’t desert me here in the desert
*I read the key reading yesterday but I might have the read it again
Homophone
-Words which are pronounced the same but spelt differently
E.G
*Am I allowed to speak aloud
*They’re going to put their shopping over there
What influences the speed of word recognition
-Word frequency (commonly occurring words are recognised quicker)
-Word regularity (Regularly spelled words are read more quickly than irregular words)
-Lexical neighbourhoods (Number of words possible to create by changing only one letter)
-Imageability (How easy it is to create a visual image of words)
Ways to measure word recognition
-Fluency/efficiency of reading
-Lexical decision taks
-Semantic decision tasks
-Eye tracking tasks
-Neurophysiological
Homophone effect
Semantic categorisation, does the word belong in a semantic category, yes or no.
Strong phonological theory
The core lexical representations that underpin visual word recognition are phonological, and thus, phonological processing is a mandatory part of the recognition process
What are the two routes of the Dual-route cascaded model of reading
Lexical route = Accessing mental lexicon (a store of known words) to retrieve pronunciation of the word
Sub-lexical route= Uses grapheme-phoneme rule system to convert written words into sounds.
Problems with the Dual-route cascaded model of reading
-Even in irregular words, sounds must be active to some degree (yacht)
-How much is the print-speech route active when we read?
Support for the Dual-route cascaded model of reading
-Very high rates of accuracy in reading both regular and irregular words
-Simulates several aspects of word reading in skilled readers
The triangle model of reading
-Connectionist system suggests no need for separate mechanisms of word reading
-Parallel distributed processing: All sensory information and all stored knowledge used interactively to read all words
-Unlike dual-route, can model learning how to read
-‘Rules’ are not pre-specified
-Used to model different levels of success
Comparing Dual-route and Triangle model
Computation
-DRC is two mechanisms (rules and lexical), the influence of regularity.
-Triangle is a single mechanism that spreads activation across simple neutron-like processing units, influence of consistency.
Learning
-DRC is not implemented: its an adult-state model
-For Triangle model, learning is a crucial aspect of the model
Cross Linguistic Applications
-N/A for DRC
-Triangle moel applicable for Chinese
Intervention Studies
-N/A for DRC
-Harm, McCandliss & Seidenberg (2003) for Triangle model