Topic 4 - Attention Flashcards
Two kinds of attention?
Selective and divided attention
Selective attention describes our attempts to
withdraw from certain aspects of our sensory environment with the aim of focusing on other aspects of our environment
Divided attention describes our attempts to
do more than one thing at once.
Attentional Capture describes certain
stimuli or events that automatically draw attention to
themselves. These stimuli might be highly salient (loud bang, bright flash) or might also be of evolutionary significance (more often than not, threatening).
- This might result in Visual Scanning.
Attentional distraction
is when one stimulus interrupts our ability to pay attention to another. This might be slightly different from Attentional Capture in that the cause of Distraction might be goal-oriented rather than stimulus-driven.
Types of selective attention theories?
Early, intermediate, late selection.
EARLY SELECTION
- cocktail part effect
- dicotic listening
dicotic listening shadowing experiment
2 messages in seperate ears and told to listen to one, then asked about the unattended ear, only gross phsyical properties of the unattended message were remembered. No matter the message or if by a male or female ppl couldn’t remember the unattended ears message
From sensory to memory pathway for dicotic listening shadowing experiment
2 messages enter sensory memory, then into the filter, one will continues into the detector and the other decays, the one message in the detector goes into memory.
Early selection suggests that attention operates on the basis of
Physical properties
Default organisation in attention seems to be based
on ear of delivery (channel). Again, attention operates on basis of physical characteristics.
Dicot listening experiment:
Does order matter and how
Ppl can rember the order form one ear to the other, but cannot remember an alternating order (LRLRLRLR)
Early selection bottleneck theory
Rejects all but one message at the beginning (top) of the bottleneck. That one message operates on physical characteristics.
Dicot listening experiment:
- when their name was pit into the unattended ear
Wheat does it mean?
33% recalled their own name form the unattended ear,
Means that this opposes that attention operates solely on physical properties, but also on semantic properties (meaning)
__________ conducted pioneering work into the cocktail party effect- how we tune into certain conversations and what we sacrifice in unattended channels. How selective is selective attention?
Cherry (1953)
Evidence was growing for the early selection account of ___________. However, there were also evidence to the contrary. (Semantic and not just physical properties)
Broadbent (1958)
Late selection operates only after
Meaning has been processed
Late selection
Disambiguated words heard in the unattended ear that had meaning influenced the perception of the messages coming form the attended ear. Therfore meaning matters a lot, and that late selection only occurs AFTER meaning has been processed.
Evidence for late selection can be found in the work of ________. This data suggest that selection takes place at the level of meaning!
MacKay (1973)
Intermediate selection
Attention operates on basis of physical characteristics (left, right) or language (words, numbers) or meaning (sense, nonsense)
Intermediate selection pathway
2 Message go into the attenuator (turns one message up or down) ——>
Then into the dictionary unit where they are both analyzed.
——->
Then attention is given on the basis of physical properties, language, or meaning.
Activating the dictionary unit then is an interaction between the
attended channel and content. Content that has a low threshold [insert your name here] might breakthrough on the unattended channel.
________ argued against an all-or-nothing physical filter and rather for the attenuation of messages that were not the focus of attention.
Treisman (1964)
What determines whether late or early selection takes place
The complexity of our environment, or the degree of our perpetual load
Selective attention is more likely to be late under _______ conditions, and is more likely to be early selection under ________ conditions
low load
high load