Attentional engagement theory

Beyond the search surface: Visual search and attentional engagement.
Duncan, John; Humphreys, Glyn; Journal of Experimental Psychology: Human Perception and Performance, Vol 18(2), May, 1992. pp. 578-588.
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p.579
Because the theory has to do with how easily visual attention is brought to bear on the relevant information in a display, we suggest (borrowing from Posner, Walker, Friedrich, & Rafal, 1984) that it be called the attentional engagement theory of search.
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cf.
Spreading suppression or feature integration? A reply to Duncan and Humphreys (1992).
Treisman, Anne; Journal of Experimental Psychology: Human Perception and Performance, Vol 18(2), May, 1992. pp. 589-593.