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Full-Text Articles in Medicine and Health Sciences
Do Eye Movements During Shape Discrimination Reveal An Underlying Geometric Structure?, Bradley R. Sturz, Ty W. Boyer, John F. Magnotti, Kent D. Bodily
Do Eye Movements During Shape Discrimination Reveal An Underlying Geometric Structure?, Bradley R. Sturz, Ty W. Boyer, John F. Magnotti, Kent D. Bodily
Department of Psychology Faculty Publications
Using a psychophysical approach coupled with eye-tracking measures, we varied length and width of shape stimuli to determine the objective parameters that corresponded to subjective determination of square/rectangle judgments. Participants viewed a two-dimensional shape stimulus and made a two-alternative forced-choice whether it was a square or rectangle. Participants’ gaze was tracked throughout the task to explore directed visual attention to the vertical and horizontal axes of space. Behavioral results provide threshold values for two-dimensional square/rectangle perception, and eye-tracking data indicated that participants directed attention to the major and minor principal axes. Results are consistent with the use of the major …
Cahost: An Excel Workbook For Facilitating The Johnson-Neyman Technique For Two-Way Interactions In Multiple Regression, Stephen W. Carden, Nicholas S. Holtzman, Michael J. Strube
Cahost: An Excel Workbook For Facilitating The Johnson-Neyman Technique For Two-Way Interactions In Multiple Regression, Stephen W. Carden, Nicholas S. Holtzman, Michael J. Strube
Department of Psychology Faculty Publications
When using multiple regression, researchers frequently wish to explore how the relationship between two variables is moderated by another variable; this is termed an interaction. Historically, two approaches have been used to probe interactions: the pick-a-point approach and the Johnson-Neyman (JN) technique. The pick-a-point approach has limitations that can be avoided using the JN technique. Currently, the software available for implementing the JN technique and creating corresponding figures lacks several desirable features–most notably, ease of use and figure quality. To fill this gap in the literature, we offer a free Microsoft Excel 2013 workbook, CAHOST (a concatenation of the first …