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Donald Broadbent

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description Donald Broadbent Overview

Donald Broadbent was a British experimental psychologist whose research helped establish the information-processing approach to human attention. In Perception and Communication, published in 1958, he proposed an early-selection filter model in which limited-capacity processing selects information using basic physical characteristics before full semantic analysis. His work is foundational for students and researchers studying selective attention, divided attention, and cognitive psychology.

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What is Broadbent's filter model of attention?

Broadbent proposed that incoming sensory information enters a short-term store before an early filter selects one channel for further processing. Selection is based mainly on physical properties such as which ear received a message, not initially on its meaning.

How did dichotic listening support Broadbent's theory?

In dichotic listening experiments, participants heard different streams through the left and right ears. Their difficulty reporting both streams in their original order supported Broadbent's view that limited-capacity processing creates an attentional bottleneck.

What book introduced Donald Broadbent's attention model?

Broadbent set out the model in Perception and Communication, published in 1958. The book became a landmark in the information-processing approach to experimental psychology.

Why was Broadbent's early-selection model challenged?

Later findings suggested that unattended information can sometimes be processed for meaning, as when a person notices their own name in an ignored conversation. Anne Treisman's attenuation model responded by proposing that unattended signals are weakened rather than completely blocked.

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