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bottleneck theories of attention
- suggest that as attentional resources are limited
some filtering takes place - the issue is where
- Broadbent suggests 'early on' on the basis of
physical characteristics (location of sound, pitch)
- Broadbent suggests 'early on' on the basis of
physical characteristics (location of sound, pitch)
- presented three digits simultaneously to each ear -
Ps reported digits in 'pairs' or 'ears' - ears was found
to be easier with pairs 'switching' from ear to ear -
supporting idea of 'physical basis' for selection
- theory suggests nothing about 'meaning' is processed
- Triesman found attention is switched to
unattended information if it is meaningful -
supported by 'cocktail party effect'
- bottleneck theories challenged by
suggestion of no resource limitations
on processing
- other suggestion that when selection takes place is
determined by perceptual load - amount if information
available to senses (high - early and low - late)
- made valuable contribution to
understanding of attention and
stimulated research
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