{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T21:02:40Z","timestamp":1777669360784,"version":"3.51.4"},"reference-count":61,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2021,4,16]],"date-time":"2021-04-16T00:00:00Z","timestamp":1618531200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Hum Factors"],"published-print":{"date-parts":[[2023,2]]},"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>The purpose was to explore how event segmentation theory (EST) can be used to determine optimal moments for an interruption relying on hierarchical task analysis (HTA) to identify coarse and fine event boundaries.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Research on the effects of interruptions shows that they can be either disruptive or beneficial, depending on which aspects of an interruption are manipulated. Two important aspects that contribute to these conflicting results concern when and how often interruptions occur.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>Undergraduates completed a trip planning task divided into three subtasks. The within-subjects factor was interruption timing with three levels: none, coarse breakpoints, and fine breakpoints. The between-subjects factor was interruption frequency with two levels: one and three. The dependent measures included resumption lag, number of errors, mental workload, and frustration.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Participants took longer to resume the primary task and reported higher mental workload when interruptions occurred at fine breakpoints. The effect of interruptions at coarse breakpoints was similar to completing the task without interruption. Interruption frequency had no effect on performance; however, participants spent significantly longer attending to interruptions in the initial task, and within a task, the first and second interruptions were attended to significantly longer than the third interruption.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The disruptiveness of an interruption is tied to the point within the task hierarchy where it occurs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Application<\/jats:title>\n                    <jats:p>The performance cost associated with interruptions must be considered within the task structure. Interruptions occurring at coarse breakpoints may not be disruptive or have a negative effect on mental workload.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/00187208211009010","type":"journal-article","created":{"date-parts":[[2021,4,16]],"date-time":"2021-04-16T11:50:53Z","timestamp":1618573853000},"page":"22-36","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":17,"title":["Examining the Effect of Interruptions at Different Breakpoints and Frequencies Within a Task"],"prefix":"10.1177","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2976-5384","authenticated-orcid":false,"given":"Sarah A.","family":"Powers","sequence":"first","affiliation":[{"name":"Old Dominion University, Norfolk, Virginia, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark W.","family":"Scerbo","sequence":"additional","affiliation":[{"name":"Old Dominion University, Norfolk, Virginia, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2021,4,16]]},"reference":[{"key":"bibr1-00187208211009010","doi-asserted-by":"publisher","DOI":"10.1145\/985692.985727"},{"key":"bibr2-00187208211009010","doi-asserted-by":"publisher","DOI":"10.1207\/s15516709cog2601_2"},{"key":"bibr3-00187208211009010","volume":"26","author":"Altmann E. 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