Broadbent's Filter Teisman's Attenuation and Norman's Pertinence

- the auditory mechanism acts as a selective filter, it can be tuned to focus on one message
- only one message pases on through the filter at a time, into the limited-capacity decision channel

versus

Treisman's Attenuation Theory
- used shadowing task
- could distinguish between messages
- rejected the early selection notion
- all incoming messages receive come analysis

therefore more than one message can go through at a time.

and then Norman's Pertinence Model which described how our attention is guided by 2 factors which are 1) sensory and 2) pertinence. If we are in a room and there is loud music playing (sensory) then we are going to focus mainly on that. If someone asks us a questions, the answer to it increases in importance (pertinence) therefore we are able to retrieve the information from our long term memory and answer the question.

So after all this what I make of it is, Broadbent came around and looked at how we pay attention to things, he then established his model and view which claimed that we can only focus on one message at a time, only one message can go through the filter.  Then Treisman said no, and experimented to see how we give some analysis to multiple incoming messages, therefore proving that more than 1 message can pass through the filter at a time. Then Norman further investigated how we message what messages to pay attention to, why is one thing that we hear, more clear to us or has more of our focus, than another message? Its because of sensory and pertinence factors, whatever is loudest or most important at that moment is going to be what we focus on.