{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T19:47:29Z","timestamp":1789588049842,"version":"build-2803163510"},"reference-count":36,"publisher":"SAGE Publications","issue":"11","license":[{"start":{"date-parts":[[2005,11,1]],"date-time":"2005-11-01T00:00:00Z","timestamp":1130803200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Psychol Sci"],"published-print":{"date-parts":[[2005,11]]},"abstract":"<jats:p>Multiple object tracking is hypothesized to utilize visual indexes, which may provide rapid, parallel access to a limited number of visual objects, thereby supporting a variety of spatial tasks. We examined whether faulty indexing might play a role in the severe visuospatial deficits found in Williams syndrome. We asked observers to track from one to four targets in a display of eight identical objects. Objects remained stationary (static condition) or moved randomly and independently (moving condition) for 6 s, after which observers pointed to the objects they thought were targets. People with Williams syndrome were impaired in the moving condition, but not the static condition, compared with mental-age-matched control participants. Normal children who were younger than the mental-age-matched control children did not show the same profile as individuals with Williams syndrome, which suggests that the difference between the tasks in Williams syndrome did not reflect simple developmental immaturity. Error analysis revealed that all groups had \u201cslippery\u201d indexes, falsely identifying target neighbors, and further suggested that people with Williams syndrome deploy fewer indexes than do people without this disorder.<\/jats:p>","DOI":"10.1111\/j.1467-9280.2005.01635.x","type":"journal-article","created":{"date-parts":[[2005,11,1]],"date-time":"2005-11-01T05:19:14Z","timestamp":1130822354000},"page":"905-912","source":"Crossref","is-referenced-by-count":63,"title":["Multiple Object Tracking in People With Williams Syndrome and in Normally Developing Children"],"prefix":"10.1177","volume":"16","author":[{"given":"Kirsten","family":"O'Hearn","sequence":"first","affiliation":[{"name":"Johns Hopkins University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barbara","family":"Landau","sequence":"additional","affiliation":[{"name":"Johns Hopkins University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James E.","family":"Hoffman","sequence":"additional","affiliation":[{"name":"University of Delaware"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2005,11,1]]},"reference":[{"key":"bibr1-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-0965(03)00026-2"},{"key":"bibr2-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1097\/00001756-199705260-00025"},{"key":"bibr3-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1017\/S0140525X97001611"},{"key":"bibr4-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1002\/ajmg.10539"},{"key":"bibr5-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1162\/089892900561959"},{"key":"bibr6-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuropsychologia.2003.08.007"},{"key":"bibr7-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/S0010-0277(00)00154-2"},{"key":"bibr8-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1152\/jn.1998.80.5.2657"},{"key":"bibr9-j.1467-9280.2005.01635.x","volume-title":"Differential Abilities Scales","author":"Elliott C.D.","year":"1990"},{"key":"bibr10-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1038\/ng0993-11"},{"key":"bibr11-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/S0010-0285(02)00518-2"},{"key":"bibr12-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1017\/S0021963097001789"},{"key":"bibr13-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1111\/1467-9280.00429"},{"key":"bibr14-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/S1364-6613(98)01230-3"},{"key":"bibr15-j.1467-9280.2005.01635.x","volume-title":"Kaufman Brief Intelligence Test","author":"Kaufman A.S.","year":"1990"},{"key":"bibr16-j.1467-9280.2005.01635.x","author":"Landau B.","journal-title":"Cognition"},{"key":"bibr17-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/S1364-6613(97)01113-3"},{"key":"bibr18-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1006\/brcg.2000.1232"},{"key":"bibr19-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuron.2004.08.014"},{"key":"bibr20-j.1467-9280.2005.01635.x","doi-asserted-by":"crossref","unstructured":"O'Hearn K., Landau B., Hoffman J.E. (2005, April).\n                      Subitizing in people with Williams syndrome and normally developing children\n                      . Poster presented at the biennial meeting of the Society for Research in Child Development, Atlanta, GA.","DOI":"10.1111\/j.1467-9280.2005.01635.x"},{"key":"bibr21-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1097\/00001756-200207020-00009"},{"key":"bibr22-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/S1364-6613(00)01477-7"},{"key":"bibr23-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1080\/13506280344000518"},{"key":"bibr24-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1163\/156856888X00122"},{"key":"bibr25-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1162\/089892900561986"},{"key":"bibr26-j.1467-9280.2005.01635.x","author":"Reiss J.E.","journal-title":"Vision Research"},{"key":"bibr27-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1037\/0096-3445.133.1.46"},{"key":"bibr28-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1006\/cogp.1998.0698"},{"key":"bibr29-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/S0010-9452(08)70889-X"},{"key":"bibr30-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1207\/s15516709cog1401_3"},{"key":"bibr31-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/S0010-0277(03)00049-0"},{"key":"bibr32-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1037\/0096-1523.19.2.331"},{"key":"bibr33-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/0010-0277(84)90023-4"},{"key":"bibr34-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1111\/1467-9280.03451"},{"key":"bibr35-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1038\/358749a0"},{"key":"bibr36-j.1467-9280.2005.01635.x","doi-asserted-by":"publisher","DOI":"10.1016\/0010-0285(92)90010-Y"}],"container-title":["Psychological Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1111\/j.1467-9280.2005.01635.x","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1111\/j.1467-9280.2005.01635.x","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1111\/j.1467-9280.2005.01635.x","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T01:28:23Z","timestamp":1777598903000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1111\/j.1467-9280.2005.01635.x"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2005,11]]},"references-count":36,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2005,11]]}},"alternative-id":["10.1111\/j.1467-9280.2005.01635.x"],"URL":"https:\/\/doi.org\/10.1111\/j.1467-9280.2005.01635.x","relation":{},"ISSN":["0956-7976","1467-9280"],"issn-type":[{"value":"0956-7976","type":"print"},{"value":"1467-9280","type":"electronic"}],"subject":[],"published":{"date-parts":[[2005,11]]}}}