Attention_I(2)

Attention_I(2) - What is Attention? Attention...

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1 Attention "Everyone knows what attention is. It is the taking possession by the mind, in clear and vivid form, of what seem several simultaneously possible objects or trains of thought. Focalization, concentration, of consciousness are of its essence." William James, 1890 What is Attention? Read the blue print: Somewhere Among hidden the in most the spectacular Rocky Mountains cognitive near abilities Central City is Colorado the an ability old to miner select hid one a message box from of another . gold. We Although do several this hundred by people focusing have our looked attention for on it, certain they cues have such not as found type it style . What is Attention? (Reed, p. 3, Figure 1.1)
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2 Dichotic Listening "Shadowing” task: Repeating a message as it's being said. Needed: 2 volunteers with nice loud voices Donald Broadbent’s study (1957) Subject hears different numbers simultaneously in each ear (2 pairs, with 1/2 sec. in between): He hears “7-3 4-2 1-5” Time: 7 3 4 2 1 5 “7 4 1 3 2 5” Donald Broadbent’s study (1957) Subject hears different numbers simultaneously in each ear (2 pairs, with 1/2 sec. in between): He hears “7-3 4-2 1-5” Time: 7 3 4 2 1 5 OR: “3 2 5 7 4 1”
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3 Donald Broadbent’s study (1957) When the subject is asked to report the numbers in the order in which they were presented, they reported fewer digits correctly (50% vs. 65%). Time: 7 3 4 2 1 5 “7 3 4 2 1 5” Broadbent identified a BOTTLENECK The input rate (top 2 tubes) exceeds the output rate (bottom tube). Too much information is trying to get through, so some may be lost. Broadbent’s filter model of attention 2 top tubes ~ 2 ears (sensory store) Balls ~ digits Flap ~ filter Flap determines order It takes time to shift attentional flap Saying in order is harder, takes more time because flap has to keep shifting back and forth So some info fades. Broadbent’s filter model of attention Sensory Store Filter Pattern Recognition
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4 Broadbent’s theory is an “early selection” theory (It proposes that the sensory info you’re trying to ignore is
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Attention_I(2) - What is Attention? Attention...

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