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Description:The Information Sciences Institute ISI is a world leader in research and development of advanced information processing computer and communications technologies
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Artificial Intelligence Overview About News Events Past ISI Seminars Selected Honors Leadership History Contact People Directory Leadership Administrative Staff Students Visiting Researchers Visiting Students Alumni Research Groups Funders Demos & Downloads Resources Getting Funded Join Us Researchers Students & Interns Environs Feature Story Can taking breaks enhance test-taking performance? December 18, 2018 Might power naps enhance performance? Perhaps. Short breaks sure do. That is the finding of research by Kristina Lerman, principal scientist at the USC Information Sciences Institute and research associate professor in the USC Viterbi School of Engineering’s Department of Computer Science. In the paper, called "Model of Cognitive Dynamics Predicts Performance on Standardized Tests," Lerman, along with lead author Nathan O. Hodas, and co-authors Jacob Hunter, and Stephen J. Young, reviewed 2.8 million attempts by 180 thousand users to answer 6,000 SAT, ACT, and GED test questions on the website grockit.com, evaluating the intervals between the stop and start time of the students’ attempts to solve problems and learn from mistakes. Their study, published the Journal of Computational Social Science, puts forth a model to understand factors at play in performance. Similar to models previously employed to understand energy metabolism in the brain, the USC team’s model focuses on the concept of resource depletion. In this case, the researchers’ premise is that the mere act of answering questions itself depletes the brain the resources it needs for performance. The data shows that the longer test takers focused on a task, the more their cognitive resources were "depleted by sustained mental effort." What is a test-taker to do? Take breaks. The authors say, "Performance declines over the course of a test taking session, it recovers following prolonged breaks between sessions." And the researchers suggest that when you do return to whatever task you are doing, that you should warm up of an easier task before starting a more complicated task. This body of work has implications not just for test-taking, the researchers say, but for the start of the work week. One should start with something easier such as an email before going onto bigger, more complex tasks that require intense concentration. Read More Groups: INSY News ISI Researchers Fight Biometric Spoofing February 1, 2019 A bad guy cases the supposedly secure Southern California headquarters of a major aerospace corporation with close governmental ties. He notes that everyone from the janitor to the CEO gains entrance after a facial recognition scan confirms their identities. https://viterbischool.usc.edu/news/2019/02/stop-the-spoofing/ Read More Congratulations to James Blythe on his recent sponsored research award from the Defense Advanced Research Projects Agency January 3, 2019 Read More COMPUTER SCIENCE STUDENTS UNLEASH POWER OF SOCIAL WEB DATA CS599: Data Science for Social Systems December 18, 2018 As part of a new USC data science course taught by ISI's Emilio Ferrara and Fred Morstatter, more than 100 master’s and PhD students unveiled their final research project posters to professors and industry members on Nov. 30 https://www.isi.edu/news/story/357 Read More See More Stories » Feature Story Can taking breaks enhance test-taking performance? December 18, 2018 Might power naps enhance performance? Perhaps. Short breaks sure do. That is the finding of research by Kristina Lerman, principal scientist at the USC Information Sciences Institute and research associate professor in the USC Viterbi School of Engineering’s Department of Computer Science. In the paper, called "Model of Cognitive Dynamics Predicts Performance on Standardized Tests," Lerman, along with lead author Nathan O. Hodas, and co-authors Jacob Hunter, and Stephen J. Young, reviewed 2.8 million attempts by 180 thousand users to answer 6,000 SAT, ACT, and GED test questions on the website grockit.com, evaluating the intervals between the stop and start time of the students’ attempts to solve problems and learn from mistakes. Their study, published the Journal of Computational Social Science, puts forth a model to understand factors at play in performance. Similar to models previously employed to understand energy metabolism in the brain, the USC team’s model focuses on the concept of resource depletion. In this case, the researchers’ premise is that the mere act of answering questions itself depletes the brain the resources it needs for performance. The data shows that the longer test takers focused on a task, the more their cognitive resources were "depleted by sustained mental effort." What is a test-taker to do? Take breaks. The authors say, "Performance declines over the course of a test taking session, it recovers following prolonged breaks between sessions." And the researchers suggest that when you do return to whatever task you are doing, that you should warm up of an easier task before starting a more complicated task. This body of work has implications not just for test-taking, the researchers say, but for the start of the work week. One should start with something easier such as an email before going onto bigger, more complex tasks that require intense concentration. Read More Groups: INSY Events Unless otherwise noted, seminars are open to the public. Jul 24 Kai-Wei Chang (UCLA) AI Seminar Towards Fair and Accountable Natural Language Processing 12:30pm - 1:30pm PDT Jul 31 Dr Ram Sriram, NIST AI Seminar Explorations in Artificial Intelligence: A Personal Journey 12:30pm - 1:30pm PDT See More Events » © 2020 The University of Southern California Legal | Privacy Policy...