PSYCH 1X03 Chapter Notes - Chapter 5: Cocktail Party, Donald Broadbent
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Attenuation theory: unattended info is not completely filtered out as proposed in the filter model, but rather (cid:858)tur(cid:374)ed dow(cid:374)(cid:859) or atte(cid:374)uated. Broad(cid:271)e(cid:374)t(cid:859)s (cid:373)odel, allowi(cid:374)g all i(cid:374)fo to pass (cid:271)ut with differe(cid:374)tly assig(cid:374)ed weighti(cid:374)gs depe(cid:374)di(cid:374)g on whether the info is physically similar to target or not. Bottleneck: only a limited amount of attentional info can be passed on for further processing. Bottom up processing: the raw data gathered by our sense. e. g only auditory stimuli, not spider because did not hear. Top down processing: combination of info with our memories, biases, and heuristics. e. g: making associations like saying spider if other words matched but spider was not actually said. Change blindness: a perceptual phenomenon where a change has occurred in a visual scene, but the observer does not notice or cannot identify it. Covert orienting: attending to something without looking at it. Early selection theory (broadbent): our attentional filter is located early in the process.
