What Can 1 Million Trials Tell Us About Visual Search?

@article{Wolfe1998WhatC1,
  title={What Can 1 Million Trials Tell Us About Visual Search?},
  author={Jeremy M. Wolfe},
  journal={Psychological Science},
  year={1998},
  volume={9},
  pages={33 - 39}
}
  • J. Wolfe
  • Published 1 January 1998
  • Psychology
  • Psychological Science
In a typical visual search experiment, observers look through a set of items for a designated target that may or may not be present. Reaction time (RT) is measured as a function of the number of items in the display (set size), and inferences about the underlying search processes are based on the slopes of the resulting RT x Set Size functions. Most search experiments involve 5 to 15 subjects performing a few hundred trials each. In this retrospective study, I examine results from 2,500… Expand

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References

SHOWING 1-10 OF 52 REFERENCES
Searching for conjunctively defined targets.
TLDR
In an experiment in which the numbers of the two distractors were unconfounded, evidence is found that subjects can search through specified subsets of stimuli, and implications of selective search are discussed. Expand
Just Say No: How Are Visual Searches Terminated When There Is No Target Present?
TLDR
A model based on Wolfe's (1994) Guided Search model, where the probability that each item is a target is computed in parallel based on items' differences from each other and their similarity to the desired target, successfully explains blank trial performance. Expand
VISUAL SEARCH.
TLDR
In a standard visual search paradigm, participants look for a target item among a number of distractor items and reaction time is analyzed as a function of set size. Expand
Are attentional dwell times inconsistent with serial visual search?
TLDR
Evidence is provided that the long estimates of attentional dwell time were caused, at least in part, by the use of masked targets and implications for models of visual search are discussed. Expand
Guided Search 2.0 A revised model of visual search
  • J. Wolfe
  • Psychology, Medicine
  • Psychonomic bulletin & review
  • 1994
TLDR
This paper reviews the visual search literature and presents a model of human search behavior, a revision of the guided search 2.0 model in which virtually all aspects of the model have been made more explicit and/or revised in light of new data. Expand
Conjunction search revisited.
  • A. Treisman, S. Sato
  • Medicine
  • Journal of experimental psychology. Human perception and performance
  • 1990
TLDR
The results suggest a modification of feature integration theory, in which attention is controlled not only by a unitary "window" but also by a form of feature-based inhibition. Expand
Guided search: an alternative to the feature integration model for visual search.
TLDR
Searches for triple conjunctions (Color X Size X Form) are easier than searches for standard conjunctions and can be independent of set size, and three parallel processes can guide attention more effectively than two. Expand
Visual search for a conjunction of movement and form is parallel
TLDR
Attention can be restricted to a spatially dispersed perceptual group, defined by common movement, which contradicts previous conclusions from visual search experiments that attention can only be assigned to contiguous regions of visual space. Expand
Serial and parallel processing of visual feature conjunctions
TLDR
It seems that the visual system is incapable of conducting a parallel search over two stimulus dimensions simultaneously, but this conclusion is extended for the conjunction of motion and colour, showing that it requires a serial search. Expand
Asymmetries in visual search for conjunctive targets.
  • A. Cohen
  • Medicine
  • Journal of experimental psychology. Human perception and performance
  • 1993
TLDR
The results demonstrate the need for 2 levels of representations: one of features and one of conjunction of features in visual search, and a model related to the modified feature integration theory is proposed to account for these results. Expand
...
1
2
3
4
5
...