Abstract
Olds, Cowan, and Jolicoeur (2000a, 2000b) showed that exposure to a display that affordspop-out search (a target among distractors of only one color) can assist processing of a related display that requiresdifficult search. They added distractors of an additional color to the initial simple display and analyzed response time distributions to show that exposure to the initial display aided subsequent search in the difficult portion (this finding was calledsearch assistance). To test whether search assistance depends on perceptual grouping of the initial items, we presented initial items that were more difficult to group (two colors of distractors, instead of just one). The target appeared (on 50% of the trials) among distractors of two colors, and then after a delay, more distractors of those two colors were added to the display. Exposure to the initial easier portion of the display did not assist processing of the second portion of the display when the initial display contained a large number of items; we found tentative evidence for assistance with small numbers of initial items. In the Olds et al. (2000a, 2000b) studies, it was easy to group the initial distractor items, because they were all the same color. In contrast, in the present study, it was difficult to group the heterogeneous initial distractor items. Search assistance is found only when initial item grouping is relatively easy, and thus we conclude that search assistance depends on grouping.
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Arguin, M., &Saumier, D. (2000). Conjunction and linear nonseparability effects in visual shape encoding.Vision Research, 40, 3099–3115.
Bauer, B., Jolicoeur, P., &Cowan, W. B. (1996). Visual search for color targets that are or are not linearly separable from distractors.Vision Research,36, 1439–1466.
Bauer, B., Jolicoeur, P., &Cowan, W. B. (1999). Convex hull test of the linear separability hypothesis in visual search.Vision Research,39, 2681–2695.
Brainard, D. H. (1997). The Psychophysics Toolbox.Spatial Vision,10, 433–436.
Chun, M. M., &Jiang, Y. (1999). Top-down attentional guidance based on implicit learning of visual covariation.Psychological Science,10, 360–365.
Duncan, J., &Humphreys, G. W. (1989). Visual search and stimulus similarity.Psychological Review,96, 433–458.
D’Zmura, M. (1991). Color in visual search.Vision Research,31, 951–966.
Eckstein, M. P., Thomas, J. P., Palmer, J., &Shimozaki, S. S. (2000). A signal detection model predicts the effects of set size on visual search accuracy for feature, conjunction, triple conjunction, and disjunction displays.Perception & Psychophysics,62, 425–451.
Horowitz, T. S., &Wolfe, J. M. (1998a). Temporal transients disrupt attentional guidance but not serial search.Investigative Ophthalmology & Visual Science,39, S225.
Horowitz, T. S., &Wolfe, J. M. (1998b). Visual search has no memory.Nature,394, 575–577.
Horowitz, T. S., &Wolfe, J. M. (2001). Search for multiple targets: Remember the targets, forget the search.Perception & Psychophysics,63, 272–285.
Humphreys, G. W., &Muller, H. J. (1993). SEarch via recursive rejection (SERR): A connectionist model of visual search.Cognitive Psychology,25, 43–110.
Klein, R. [M.] (1988). Inhibitory tagging system facilitates visual search.Nature,334, 430–431.
Klein, R. M., &MacInnes, W. J. (1999). Inhibition of return is a foraging facilitator in visual search.Psychological Science,10, 346–352.
Kristjansson, A. (2000). In search of remembrance: Evidence for memory in visual search.Psychological Science,11, 328–332.
Luck, S. J., &Vogel, E. K. (1997). The capacity of visual working memory for features and conjunctions.Nature,390, 279–281.
Maljkovic, V., &Nakayama, K. (1996). Priming of pop-out: II. The role of position.Perception & Psychophysics,58, 977–991.
Nakayama, K., &Joseph, J. S. (1998). Attention, pattern recognition and popout in visual search. In R. Parasuraman (Ed.),The Attentive Brain (pp. 279–298). Cambridge: MIT Press.
Nakayama, K., &Silverman, G. H. (1986). Serial and parallel processing of visual feature conjunctions.Nature,320, 264–265.
Olds, E. S., Cowan, W. B., &Jolicoeur, P. (1999a). Effective CRT calibration techniques for perception research.Journal of the Optical Society of America A,16, 1501–1505.
Olds, E. S., Cowan, W. B., &Jolicoeur, P. (1999b). Stimulus-determined discrimination mechanisms for color search.Perception & Psychophysics,61, 1038–1045.
Olds, E. S., Cowan, W. B., &Jolicoeur, P. (2000a). The time-course of pop-out search.Vision Research,40, 891–912.
Olds, E. S., Cowan, W. B., &Jolicoeur, P. (2000b). Tracking visual search over space and time.Psychonomic Bulletin & Review,7, 292–300.
Olds, E. S., Cowan, W. B., & Jolicoeur, P. (2000c).Visual search keeps track of where the target is not. Paper presented at the Canadian Society for Brain, Behavior & Cognitive Science annual meeting, Cambridge.
Olds, E. S., Jolicoeur, P., &Cowan, W. B. (2001). Interactions between search mechanisms in conjunction search.Canadian Journal of Experimental Psychology,55, 285–295.
Olds, E. S., &Punambolam, R. J. (2002). The decay and interruption of interactions between search mechanisms.Vision Research,42, 747–760.
Palmer, J. (1995). Attention in visual search: Distinguishing four causes of a set-size effect.Current Directions in Psychological Science,4, 118–123.
Palmer, S. E. (1999).Vision Science: Photons to phenomenology. Cambridge, MA: MIT Press.
Pylyshyn, Z. W. (2000). Situating vision in the world.Trends in Cognitive Sciences,4, 197–207.
Rosenholtz, R. (1999). A simple saliency model predicts a number of motion popout phenomena.Vision Research,39, 3157–3163.
Shore, D. I., &Klein, R. M. (2000). On the manifestations of memory in visual search.Spatial Vision,14, 59–75.
Treisman, A. M., &Gelade, G. (1980). A feature-integration theory of attention.Cognitive Psychology,12, 97–136.
Wolfe, J. M. (1994). Guided Search 2.0: A revised model of visual search.Psychonomic Bulletin & Review,1, 202–238.
Wolfe, J. M. (1998). What can 1 million trials tell us about visual search?Psychological Science,9, 33–39.
Wolfe, J. M., Cave, K. R., &Franzel, S. L. (1989). Guided search: An alternative to the feature integration model for visual search.Journal of Experimental Psychology: Human Perception & Performance,15, 419–433.
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This research was supported by an NSERC grant, and by Wilfrid Laurier University start-up funds, awarded to E.S.O.
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Olds, E.S., Degani, M.D. Does partial difficult search help difficult search?. Perception & Psychophysics 65, 238–253 (2003). https://doi.org/10.3758/BF03194797
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DOI: https://doi.org/10.3758/BF03194797