The role of eye movements in subitizing and counting
Watson, Derrick G. , Maylor, Elizabeth A. and Bruce, Lucy A. M.. (2007) The role of eye movements in subitizing and counting. Journal of Experimental Psychology: Human Perception and Performance, Vol.33 (No.6). pp. 1389-1399. ISSN 0096-1523Full text not available from this repository.
Official URL: http://dx.doi.org/10.1037/0096-15188.8.131.529
Previous work has suggested that eye movements may be necessary for accurate enumeration beyond the subitization range of about 4 items. This study determined the frequency of eye movements normally made during enumeration, their relationship to response times, and whether they are required for accurate performance. This was achieved by monitoring eye movements and comparing performance when observers were allowed to saccade and when they were not. The results showed that (a) there was a sharp increase in saccadic frequency beyond about 4 items (from < 0.2 saccades per item to about I per item), and (b) enumeration of fewer than 4 items remained rapid and accurate even when eye movements were prevented, whereas enumeration beyond this became less efficient and sometimes less accurate. The results are discussed in relation to the memory and processing requirements of enumeration tasks.
|Item Type:||Journal Article|
|Subjects:||B Philosophy. Psychology. Religion > BF Psychology|
|Divisions:||Faculty of Science > Psychology|
|Library of Congress Subject Headings (LCSH):||Eye — Movements, Visual perception, Numeration , Number concept, Human information processing|
|Journal or Publication Title:||Journal of Experimental Psychology: Human Perception and Performance|
|Publisher:||American Psychological Association|
|Number of Pages:||11|
|Page Range:||pp. 1389-1399|
|Funder:||Economic and Social Research Council (Great Britain) (ESRC)|
|Grant number:||R000239180 (ESRC)|
|References:||Atkinson, J., Campbell, F. W., & Francis, M. R. (1976). The magic number 4+0: A new look at visual numerosity judgments. Perception, 5, 327– 334. Balakrishnan, J. D., & Ashby, F. G. (1991). Is subitizing a unique numerical ability? Perception & Psychophysics, 50, 555–564. Beck, M. R., Peterson, M. S., & Vomela, M. (2006). Memory for where, but not what, is used during visual search. Journal of Experimental Psychology: Human Perception and Performance, 32, 235–250. Boot, W. R., McCarley, J. S., Kramer, A. F., & Peterson, M. S. (2004). Automatic and intentional memory processes in visual search. Psychonomic Bulletin & Review, 11, 854–861. Danziger, S., Kingstone, A., & Snyder, J. J. (1998). Inhibition of return to successively stimulated locations in a sequential visual search paradigm. Journal of Experimental Psychology: Human Perception and Performance, 24, 1467–1475. Dehaene, S., & Cohen, L. (1994). Dissociable mechanisms of subitizing and counting: Neuropsychological evidence from simultanagnosic patients. Journal of Experimental Psychology: Human Perception and Performance, 20, 958–975. Faust, M. E., & Balota, D. A. (1997). Inhibition of return and visuospatial attention in healthy older adults and individuals with dementia of the Alzheimer type. Neuropsychology, 11, 13–29. Folk, C. L., Egeth, H., & Kwak, H.-W. (1988). Subitizing: Direct apprehension or serial processing? Perception & Psychophysics, 44, 313–320. Gallistel, C. R., & Gelman, R. (1992). Preverbal and verbal counting and computation. Cognition, 44, 43–74. Gilchrist, O. D., & Harvey, M. (2000). Refixation frequency and memory mechanisms in visual search. Current Biology, 19, 1209–1212. Hartley, A. A., & Kieley, J. M. (1995). Adult age differences in the inhibition of return of visual attention. Psychology and Aging, 10, 670–683. He, S., Cavanagh, P., & Intriligator, J. (1997). Many objects can be enumerated in afterimages when they are not crowded [Abstract]. Abstracts of the Psychonomic Society, 2, 3. Hooge, I. Th. C., & Frens, M. A. (2000). Inhibition of saccade return (ISR): Spatio-temporal properties of saccade programming. Vision Research, 40, 3415–3426. Horowitz, T. S. (2006). Revisiting the variable memory model of visual search. Visual Cognition, 14, 668–684. Horowitz, T. S., & Wolfe, J. M. (1998, August 6). Visual search has no memory. Nature, 394, 575–577. Kaufman, E. L., Lord, M. W., Reese, T. W., & Volkman, J. (1949). The discrimination of visual number. American Journal of Psychology, 62, 498–525. Klahr, D. (1973). Quantification processes. In W. G. Chase (Ed.), Visual information processing (pp. 3–34). New York: Academic Press. Klein, R. M. (2000). Inhibition of return. Trends in Cognitive Sciences, 4, 138–146. Klein, R. M., & Dukewich, K. (2006). Does the inspector have a memory? Visual Cognition, 14, 648–667. Klein, R., & Farrell, M. (1989). Search performance without eye movements. Perception & Psychophysics, 46, 476–482. Klein, R. M., & MacInnes, W. J. (1999). Inhibition of return is a foraging facilitator in visual search. Psychological Science, 10, 346–352. Kowler, E., & Steinman, R. M. (1977). The role of small saccades in counting. Vision Research, 17, 141–146. Langley, L. K., Fuentes, L. J., Hochhalter, A. K., Brandt, J., & Overmier, J. B. (2001). Inhibition of return in aging and Alzheimer’s disease: Performance as a function of task demands and stimulus timing. Journal of Clinical and Experimental Neuropsychology, 23, 431–446. MacInnes, W. J., & Klein, R. M. (2003). Inhibition of return biases orienting during the search of complex scenes. TheScientificWorld- JOURNAL at http://www4.infotrieve.com, 3, 75–86. Mandler, G., & Shebo, B. J. (1982). Subitizing – an analysis of its component processes. Journal of Experimental Psychology: General, 111, 1–22. Matin, E., Shao, K. C., & Boff, K. R. (1993). Saccadic overhead: Information-processing time with and without saccades. Perception & Psychophysics, 53, 372–380. McCarley, J. S., Kramer, A. F., Boot, W. R., Peterson, M. S., Wang, R. F., & Irwin, D. E. (2006). Oculomotor behaviour in visual search for multiple targets. Visual Cognition, 14, 685–703. McCarley, J. S., Wang, R. F., Kramer, A. F., Irwin, D. E., & Peterson, M. S. (2003). How much memory does oculomotor search have? Psychological Science, 14, 422–426. Peterson, M. S., Kramer, A. F., Wang, R. X. F., Irwin, D. E., & McCarley, J. S. (2001). Visual search has memory. Psychological Science, 12, 287–292. Piazza, M., Mechelli, A., Butterworth, B., & Price, C. J. (2002). Are subitizing and counting implemented as separate or functionally overlapping processes? NeuroImage, 15, 435–446. Plude, D. J., & Doussard-Roosevelt, J. A. (1989). Aging, selective attention, and feature integration. Psychology and Aging, 4, 98–105. Posner, M. I., & Cohen, Y. (1984). Components of visual orienting. In H. Bouma & D. G. Bouwhuis (Eds.), Attention and performance X: Control of language processes (pp. 531–556). Hillsdale, NJ: Erlbaum. Pylyshyn, Z. W. (1989). The role of location indexes in spatial perception: A sketch of the FINST spatial-index model. Cognition, 32, 65–97. Pylyshyn, Z. W. (2001). Visual indexes, preconceptual objects, and situated vision. Cognition, 80, 127–158. Rafal, R., Egly, R., & Rhodes, D. (1994). Effects of inhibition of return on voluntary and visually guided saccades. Canadian Journal of Experimental Psychology, 48, 284–300. Rafal, R. D., Calabresi, P. A., Brennan, C. W., & Sciolto, T. K. (1989). Saccade preparation inhibits reorienting to recently attended locations. Journal of Experimental Psychology: Human Perception and Performance, 15, 673–685. Rastle, K., & Davis, M. H. (2002). On the complexities of measuring naming. Journal of Experimental Psychology: Human Perception and Performance, 28, 307–314. Sagi, D., & Julesz, B. (1984). Detection versus discrimination of visual orientation. Perception, 14, 619–628. Scialfa, C. T., & Joffe, K. M. (1998). Response times and eye movements in feature and conjunction search as a function of target eccentricity. Perception & Psychophysics, 60, 1067–1082. Simon, T. J., & Vaishnavi, S. (1996). Subitizing and counting depend on different attentional mechanisms: Evidence from visual enumeration in afterimages. Perception & Psychophysics, 58, 915–926. Snyder, J. J., & Kingstone, A. (2000). Inhibition of return and visual search: How many separate loci are inhibited? Perception & Psychophysics, 62, 452–458. Svenson, O., & Sjo¨berg, K. (1983). Speeds of subitizing and counting processes in different age groups. The Journal of Genetic Psychology, 142, 203–211. Tipper, S. P., Driver, J., & Weaver, B. (1991). Object-centred inhibition of return of visual attention. Quarterly Journal of Experimental Psychology, 43A, 289–298. Trick, L. M., & Pylyshyn, Z. W. (1993). What enumeration studies can show us about spatial attention: Evidence for limited capacity preattentive processing. Journal of Experimental Psychology: Human Perception and Performance, 19, 331–351. Trick, L. M., & Pylyshyn, Z. W. (1994). Why are small and large numbers enumerated differently: A limited capacity preattentive stage in vision. Psychological Review, 101, 80–102. Van Oeffelen, M. P., & Vos, P. G. (1984). Enumeration of dots: An eye movement analysis. Memory & Cognition, 12, 607–612. Watson, D. G., & Humphreys, G. W. (1999). The magic number four and temporo-parietal damage: Neurological impairments in counting targets amongst distractors. Cognitive Neuropsychology, 16, 609–629. Watson, D. G., Maylor, E. A., Allen, G. E. J., & Bruce, L. A. M. (2007). Early visual tagging: Effects of target-distractor similarity and old age on search, subitization, and counting. Journal of Experimental Psychology: Human Perception and Performance, 33, 549–569. Watson, D. G., Maylor, E. A., & Bruce, L. A. M. (2005). Search, enumeration, and aging: Eye movement requirements cause age-equivalent performance in enumeration but not in search tasks. Psychology and Aging, 20, 226–240. Watson, D. G., Maylor, E. A., & Manson, N. J. (2002). Aging and 1398 WATSON, MAYLOR, AND BRUCE enumeration: A selective deficit for the subitization of targets among distractors. Psychology and Aging, 17, 496–504. Williams, D. E., Reingold, E. M., Moscovitch, M., & Behrmann, M. (1997). Patterns of eye movements during parallel and serial visual search tasks. Canadian Journal of Experimental Psychology, 51, 151– 164. Wolfe, J. M., Alvarez, G. A., & Horowitz, T. S. (2000). Attention is fast but volition is slow. Nature, 406, 691. Zelinsky, G. J., & Sheinberg, D. L. (1997). Eye movements during parallelserial visual search. Journal of Experimental Psychology: Human Perception and Performance, 23, 244–262.|
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