Penn State researchers have developed a computer program that mimics what happens when a human feels worried and "threatened" before starting a task. The results were described in a paper, "Using Cognitive Modeling To Study Behavior Moderators: Pre-Task Appraisal and Anxiety," presented this month at the 48th Annual Meeting of the Human Factors and Ergonomics Society in New Orleans. For their study, the researchers developed software that simulated how people who felt threatened would respond when asked to perform a serial subtraction problem (start with a four-digit number such as 2,522 and repeatedly subtract from it a specific one or two-digit number such as 7 or 13). The handicapped program matched fairly well the published data on humans threatened by the task: performance accuracy remained the same but performance speed decreased about 25 percent.
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