Language 1 Flashcards
What is language?
Language is a system of symbols and rules that enable us to communicate
Symbols = written/spoken words
Rules = specify how the words are ordered to produce sentences
Why do we use language?
We use language for:
- Primarily for communication
- Thinking
- Recording info
- Expressing emotions
What aspects of language do psychologists study?
1) Cog. Psych = language processing (listening)
2) Neuroscience = neural substrates underlying the language system
3) Dev. Psych = language acquisition
4) Social Psych = communication between people/groups
5) Clinicians/therapists = language deficits and interventions
6) Applied Psych = language use in marketing/advertising
How do you accurately understand how the brain processes language?
Examine language processing in real-time (whilst people are reading/listening)
How do you examine language processing in real-time (whilst people are reading/listening)?
Eye-tracking or EEG
What is eye-tracking?
Monitoring participants’ eye-movement as they read text on a computer screen
What do eye movements consist of?
1) Fixations
2) Saccades
What are Fixations in eye-tracking?
Eye movements each about 250ms
What are Saccades in eye-tracking?
Where the eye jumps from one location to another
What are regressions in eye-tracking?
Backward eye movements, allowing the reader to look at previously read text (make up about 10-15% of all eye movements)
What is perceptual span in eye-tracking?
We can see about 4 characters to the left and 12-15 to the right of fixation
What do you call it when we can see about 4 characters to the left and 12-15 to the right of fixation?
Perceptual span
What do you call it when there are backward eye movements, allowing the reader to look at previously read text (makeup about 10-15% of all eye movements?
Regressions
What happens in eye-tracking?
1) Infrared light is shone into the eye
2) It generates 1 reflection from the pupil and 1 reflection from the cornea
3) The reflections are measured by the eye-tracking camera
4) By measuring how these reflections move relative to each other, we can calculate what the eye is looking at
How do we calculate what the eye is looking at?
By measuring how the reflection from the pupil and the reflection from the cornea move in relative to each other
What does eye-tracking tell us?
Which words people re-read based on the length of eye-fixation for particular words
How can you tell which words people re-read based on the length of eye fixation for particular words?
- Reflex complexity of processing
e.g. accessing word meanings and integrating them with the meanings of previously read words - Longer fixation times are associated with more complex processes
Which sentence induces an increased eye fixation time?
1) The concerned student calmed the child
2) The concerned steward calmed the child
(Rayner and Duffy)
- Increased fixation times for the 2nd sentence with “steward”
- Because the word steward is less frequently used compared to the word student
- More frequently used words = requires less fixation as we are more familiar with it
What does the immediacy hypothesis suggest?
The reader tries to comprehend a word as soon as it is encountered (they don’t delay processing)
What does the eye-mind hypothesis suggest?
There is no delay between looking at a word and the brain processing the word
Which hypothesis suggests there is no delay between looking at a word and the brain processing the word?
1) Immediacy
2) Eye-mind
Eye-mind hypothesis
Which hypothesis suggests the reader tries to comprehend a word as soon as it is encountered (they don’t delay processing)?
1) Immediacy
2) Eye-mind
Immediacy
Collectively, what do the Immediacy and Eye-mind hypotheses assume?
That the brain starts processing a word as soon as it is encountered and the eye only moves onto the next words once that processing is complete
What is EEG?
Electroencephalography