PSYCH 2H03 Lecture 22: Lecture 22 – Triesman’s attenuation theory, D&D’s late selection model
25 Feb 2020
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Lecture 22 triesman"s attenuation theory, d&d"s late selection model. Said it isn"t that you can"t process anything in the unattended ear. Rather, it is just a weaker signal (everything still gets processed) dear aunt jane experiment: gray and wadderburn (1960) Ps hear two messages simulatenously: in attended channel hear: dear 7 jane , in unattended channel hear: 9 aunt 6 . Implications: (1) you can switch attention between channels, (2) info is processed for meaning earlier than broadbent thought. Treisman says you are primed to hear aunt" relative to the other words in the attended channel. These studies suggest all info is processed for meaning prior to reaching the bottleneck. All info is processed for meaning before it is selected. All info being processed in meaning before the bottleneck early vs. late selection: Early selection models: all info processed for basic physical characteristics then selected for meaning at bottleneck.
