Fleck and Mitroff thought that missing low-prevalence items in visual search might be due to overly fast response, and tested this by presenting visual displays with line drawings of various objects for visual search.
They allowed participants to make an additional response (i.e., a correction) if they felt that their just-made
response had been in error. Under these conditions:
a) the effect of low-prevalence was greatly exaggerated.
b) the effect of low-prevalence was greatly reduced.
c) nothing changed low prevalence targets were missed just as much as before.
d) the effects of low-prevalence were greater than in Wolfe et al., which featured actual bag-screening displays.
Question 2How does guided search as proposed by Wolfe differ from feature integration as proposed by Treisman?
a) Guided search proposes that the two stages of visual search are related an interactive.
b) Guided search proposes three stages in visual search rather than two.
c) Guided search proposes that that search is never effortful or post-attentive.
d) Guided search proposes that conjunction searches are as efficient as feature searches.
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