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College of Saint Benedict and Saint John's University

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Perception

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Full-Text Articles in Psychology

Stimulus–Response Congruency Effects Depend On Quality Of Perceptual Evidence: A Diffusion Model Account, Blaine Tomkins May 2023

Stimulus–Response Congruency Effects Depend On Quality Of Perceptual Evidence: A Diffusion Model Account, Blaine Tomkins

Psychology Faculty Publications

Individuals often need to make quick decisions based on incomplete or “noisy” information. This requires the coordination of attentional, perceptual, cognitive, and behavioral mechanisms. This poses a challenge for isolating the unique effects of each subprocess from behavioral data, which reflect the summation of all subprocesses combined. Sequential sampling models offer a more detailed examination of behavioral data, enabling us to separate decisional and non-decisional processes at play in a task. Participants were required to identify briefly presented shapes while perceptual (duration, size, location) and response features (location-congruent/-incongruent/-neutral) of the task were manipulated. The diffusion model (Ratcliff, 1978) was used …


Does The Mere Presence Of A Cell Phone Impair Task Performance?, Sabrina Urick, Kaylee Egbers, Veronica Sinell Apr 2018

Does The Mere Presence Of A Cell Phone Impair Task Performance?, Sabrina Urick, Kaylee Egbers, Veronica Sinell

Celebrating Scholarship and Creativity Day (2018-)

The purpose of our study was to determine if the mere presence of a person’s cell phone serves as a distraction that impairs task performance, even if the person does not use it. In order to test this, we had two groups of participants complete several tasks that require attention and accurate memory in order to perform well. The tasks used were a card matching game (sometimes known as Concentration), a sequential memory game (Simon), and the n-back task. One group was instructed to put their cell phones away before they were presented with the tasks and the other group …