1. Focused Attention Introduction Early Research Broadbent’s theory – the filter model Treisman’s theory – the attenuator model Deutsch and Deutsch - the pertinence model Evaluation of single channel models Early or late selection Summary
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3. Early Research Perception and Communication (Broadbent , 1958) Experiments by Cherry (1953) and Broadbent (1954)
8. Broadbent’s theory – the filter model Perception and Communication(1958) The first modern theory of attention and introduced a number of key concepts. 1.Attention has a limited capacity 2.The filter
9. Broadbent’s theory – the filter model SENSES FILTER SHORT-TERM STORE LIMITED CAPACITY CHANNEL LONG-TERM MEMORY
12. Gray and Wedderburn (1960) presented either different short phrases or syllables to each ear simultaneously Left ear: OB-2-TIVE Dear-4-Jane Right ear: 6-JEC-9 8-Aunt-2 Participants: OBJECTIVE Dear Aunt Jane Syllable Phrase
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15. Treisman suggested that the filter does not block rejected Information but the information is attenuated. Treisman’s theory – the attenuator model
18. Occasionally some of the rejected,or attenuatted,Information will be analysed if this information is important or highly relevant .
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20. Treisman suggested that we have” word units ”which we use when analysing and recognising sentence.
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24. ‘ Dear Aunt Jane’ Treisman would argue that this is because, at the moment ‘4’ and ’Aunt’ are played,paticipants expect to hear a word like Aunt and it momentarily has a low threshold.
30. MacKay, 1973 They were throwing stones at the bank River / Money Bank referred to a riverbank Bank referred to a high street bank Support for the pertinence model that shows information in an “unattended” message is processed and analyzed.
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