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Social and Behavioral Sciences Commons

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Psychology

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Full-Text Articles in Social and Behavioral Sciences

Speed Has An Effect On Multiple-Object Tracking Independently Of The Number Of Close Encounters Between Targets And Distractors, Cary S. Feria Jan 2013

Speed Has An Effect On Multiple-Object Tracking Independently Of The Number Of Close Encounters Between Targets And Distractors, Cary S. Feria

Faculty Publications

Multiple-object tracking (MOT) studies have shown that tracking ability declines as object speed increases. However, this might be attributed solely to the increased number of times that target and distractor objects usually pass close to each other (“close encounters”) when speed is increased, resulting in more target–distractor confusions. The present study investigates whether speed itself affects MOT ability by using displays in which the number of close encounters is held constant across speeds. Observers viewed several pairs of disks, and each pair rotated about the pair’s midpoint and, also, about the center of the display at varying speeds ...


The Effects Of Distractors In Multiple Object Tracking Are Modulated By The Similarity Of Distractor And Target Features, Cary S. Feria Jan 2012

The Effects Of Distractors In Multiple Object Tracking Are Modulated By The Similarity Of Distractor And Target Features, Cary S. Feria

Faculty Publications

Is the effect of distractors in multiple object tracking dependent on the distractors sharing the features of the targets? In experiment 1, observers tracked five targets among five distractors that were identical to the targets and a number of additional distractors that were either identical to or featurally distinct from the targets. Results showed that distractors that are distinct from the targets in shape or color, or are stationary, impair tracking less than distractors that are identical to the targets. However, tracking performance declined as the number of distractors increased, even for featurally distinct distractors. Experiment 2 showed that distractors ...


Judging Distance Across Texture Discontinuities, Cary S. Feria, M. L. Braunstein, G. J. Andersen Jan 2003

Judging Distance Across Texture Discontinuities, Cary S. Feria, M. L. Braunstein, G. J. Andersen

Faculty Publications

Sinai et al (1998 Nature 395 497 - 500) showed that less distance is perceived along a ground surface that spans two differently textured regions than along a surface that is uniformly textured. We examined the effect of texture continuity on judged distance using computer-generated displays of simulated surfaces in five experiments. Discontinuities were produced by using different textures, the same texture reversed in contrast, or the same texture shifted horizontally. The simulated surface was either a ground plane or a frontoparallel plane. For all textures and both orientations, less distance was judged in the discontinuous conditions than in continuous conditions ...


Perceived Internal Depth In Rotating And Translating Objects, M. L. Braunstein, C. W. Sauer, Cary S. Feria, G. J. Andersen Jan 2002

Perceived Internal Depth In Rotating And Translating Objects, M. L. Braunstein, C. W. Sauer, Cary S. Feria, G. J. Andersen

Faculty Publications

Previous research has indicated that observers use differences between velocities and ratios of velocities to judge the depth within a moving object, although depth cannot in general be determined from these quantities. In four experiments we examined the relative effects of velocity difference and velocity ratio on judged depth within a transparent object that was rotating about a vertical axis and translating horizontally, examined the effects of the velocity difference for pure rotations and pure translations, and examined the effect of the velocity difference for objects that varied in simulated internal depth. Both the velocity difference and the velocity ratio ...