Chapter 4 (Attention) Flashcards
1. Understand different views on how attention functions as an information selector/filter 2. Understand research on multitasking, mind wandering and divided attention 3. Understand the difference between covert and overt attention
William James” view on attention
“,,, the taking of possession by the mind, in clear and vivid form, one out of what seem several simultaneous possible objects or trains of thought”
What does William James view on attention imply
attention is primarily a filtering process
Does seem fundamentally true,
though it’s equally true that attention means different things to different people
A method of attentional filtering
Selective attention
What is selective attention
view of attention which holds that its job is to identify relevant information, so that irrelevant information is filtered out
One method to demonstrate selective attention (selective hearing)
The cocktail party phenomenon (Cherry, 1953)
This model does not work for selective attention (we filter out irrelevant conversations with ease)
This model doesn’t work and assumes that no meaning is used to engage in selective attention
What is the cocktail party method
5 ways people could potentially filter out one message from the rest with relative ease
Cherry (1953)
What are the 5 ways people can filter out messages with relative ease (of the cocktail party method)
- The direction of the voice in space
- Body language (gestures, lip-reading, etc.)
- Differences in speaking voices (pitch, speed, male vs female, etc.)
- Differences in accents
***5. Transition probabilities (predicting the words you will hear and may have missed based on implicitly known probabilities and context)
We need to lock out the extra auditory stuff to be able to pay attention to the main conversation, thus we would pay no attention to other auditory stimuli and its meaning
However,
the attentional filter is not fully blocking out the other stimuli
If two people talk simultaneously about different topics and switch topics half way through, you will follow the topic rather than the person, and will likely not notice
Similarly, if someone says you name across the room, you will likely hear it and recognize the meaning right away even if fully invested in another conversation
What is an example of overzealous filtering
Inattentional blindness:
The failure to attend to critical information we ought to be able to notice
Eg A pilot landing a plane under difficult conditions might focus exclusively on the gauges informing him on his performance
he might not notice a truck sitting on the runway
Daniel Simons was one of the first to show
change blindness out of the lab
The anatomy of the eye doesn’t help us understand this phenomenon at all
Again, something unexpected was completely filtered out
The SART task Robertson et al. (1997)
Quick measure of sustained attention
Uses no-go trails to measure attention
Response to all didgets except 3
Severe TBI patients have trouble
Adjusting their strategy
Prior to an error, people were likely to have been responding faster than they would have before a correctly withheld response.
This seems true for everyone
Some people correct their strategy mistake
Similar strategy between control + minor TBI
major TBI did not adjust their strategies, lose self-regulation, may not recognize they should change their behavior to do it better
Does sitting vs standing make a difference for the SART task
Yep
Capacity theory states that
the longer we use our brain, the less capacity will remain
This is only true for certain types of attention
The structural limit model view attention as
Made of relatively independent modules
Each structure has its own capacity limit
Your attentional performance won’t diminish as long as you are switching between structures on a regular basis
This could suggest multitasking would be a good thing
Multitasking Task by Watson & Strayer (2010)
Participants drove in a driving simulator, behind a braking pace car
While driving, they also performed an auditory version of the Operation Span (OSPAN) task.
On average, across the board multitasking was bad for task performance
The central bottleneck theory explains this – at some point we must alternate between tasks to do multiple things “at once
Supertaskers
Not everyone showed multitasking deficits
As a general rule, multitasking is a bad idea. But for about 2.5% of undergraduate students, it seems not to be a big deal
Does attention always filter critical information well
No
Inattentional blindness was the failure to attend to critical information we ought to be able to notice - overactive filtering
Some information is so salient that it breaks through the “filter, or in other words it can capture attention
What is Attentional Blink
how a stimulus can capture attention
Observed in the context of a Rapid Serial Visual Presentation (RSVP) task paradigm
This involves brief presentation (80 ms) of simple information (e.g. letters and digits)
One type of information is the distractors, and the other is the target - like the SART, there are more distractors than targets
Your task is to remember and report back only the targets
sometimes one, sometimes two number (33% of the time there was one)
We can identify all the targets, except when attention is captured
The relative position of the second target is critical to whether it is “blinked” out or not
The blink does not occur immediately - attention takes a bit of time to fully activate
What did Cain et al. (2014) show
The video gamer advantage
They proposed the attentional blink should be less pronounced in frequent video gamers (VGP)
The blink (probably) does not occur to the same extent for everyone, but they were wrong about video gaming being good for it
There was no significant difference found
In the SART, the likelihood of an error depends on
when the last 3 was shown
The version you completed kept the 3 in a fixed position in an otherwise random sequence
The fixed position can explain why we didn’t see slowing down after a mistake (good news - no evidence of TBI) and the very steep speeding up after corrects
Intenttention as mind wandering
When people reported mind wandering in an fMRI they had similar brain activity as when resting
Default mode network: mind wandering. Our default may be mind wandering, so at rest we mnd wander
Multitasking is a generally bad idea, but
task-irrelevant stimulation could be okay
What did Olivers & Nieuwenhis (2005) demonstrate (mind wandering and multitasking)
that background music reduces the attentional blink
One explanation for this is that music decreases the likelihood of attentional capture
May reduce mind wandering
Not demonstrating bottleneck theory
What is Complete filtering
If subsequent targets ar fully filtered, it won’t matter if they are related or not
However, it seems like related targets were easier to find and reducing the attentional blink
Connectedness of information may impact overall performance
It can’t only be a fixed rate of a neuron firing because relatedness would increase firing
When people look at this image, they need to direct they fovea to the information that seems most relevant
Based on Yarbus (1967)
What you attend to the most when asked to describe ppl 1. Face
William James said about attention
Everyone knows what attention is:
“how we focus on things”
Like a filter (but that’s debatable)
Attention has different forms
Forms of filtering
Every time someone attempts to measure attention comes up with new kind of attention
In Broadbents model of attention as a filter
It’s filtered based on basic physical characteristic (sensory)
So not higher order understandings
Attention as a filter in the Broadbent’s filter model
It’s like a coffee filter (it lets some things through)
You’ll switch automatically (follow the thread with out noticing)
Something can break through the filter (ex priority like your name)
Filter makes sense & it’s
Coherent with what James said
Inattention blindness
Part of filtering (overzealous) keeping something out that would be important to you
eg pilot landing a plane
eg An invisible Gorilla (while you count the passes)
Error for SART task
Did respond to a 3
For of mistake but not called error = omission = Not responding to another
What is the average of response for the SART task?
350-400 ms