Perception and Psychophysics

Covers all areas of research in sensory processes, perception, attention, and psychophysics. Includes reports on experimental work, reviews, and issue commentary important to researchers.

Articles from Vol. 68, No. 8, November

Capturing Focused Attention
When attention is diffuse, as in a visual search task, an abrupt onset almost invariably succeeds in capturing attention. But if attention had been cued in advance to a different location, the same onset may then fail to capture attention (Theeuwes,...
Developmental Trends in Utilizing Perceptual Closure for Grouping of Shape: Effects of Spatial Proximity and Collinearity
In two experiments, visual search was used to study the grouping of shape on the basis of perceptual closure among participants 5-23 years of age. We first showed that young children, like adults, demonstrate an efficient search for a concave target...
Development of Size Constancy in Children: A Test of the Proximal Mode Sensitivity Hypothesis
In two experiments, we attempted to replicate Shallo and Rock's (1988) finding that 5- and 6-yearold children exhibit size constancy for a distant object when tested with comparison objects that are matched for visual angle. Experiment 1 (N = 80) included...
Effects of Task Factors on Selection by Color in the Rapid Serial Visual Presentation (RSVP) Task
In five experiments, we examined task factors influencing selection by color in a rapid serial visual presentation (RSVP) task. Participants were required to respond to the presence or case of a target letter presented within an RSVP sequence, and they...
Fragments of the Roelofs Effect: A Bottom-Up Effect Equal to the Sum of Its Parts
The Roelofs effect is a distortion of perceived space that occurs when a large frame whose center is offset left or right from the objective midline is presented visually to an observer and causes a bias in the observer's subjective judgment of midline....
Hemispheric Differences for the Integration of Stimulus Levels and Their Contents: Evidence from Bilateral Presentations
Several studies have demonstrated that hemispheric differences for the processing of hierarchical letter stimuli are more likely to occur when the letters at the levels are associated with conflicting responses. Typically, a single stimulus is presented,...
Performance of Blind and Sighted Humans on a Tactile Grating Detection Task
We compared the abilities of blind and sighted humans to distinguish grooved from smooth surfaces pressed against the stationary index fingertip. Ranging in age from 20 to 72 years, 37 blind and 47 sighted subjects participated in an automated two-alternative...
Reorienting Attention and Inhibition of Return
In experiments examining inhibition of return (IOR), it is common practice to present a second cue at fixation during the cue-target interval. The purpose of this fixation cue is to reorient attention away from the cued location to ensure that the facilitative...
Tactile Spatial Acuity Differs between Fingers: A Study Comparing Two Testing Paradigms
Tactile spatial acuity (TSA) is a reliable and reproducible measure of somatosensory system function that has been used to study a broad range of subject populations. Although TSA is most often assessed at the fingertip, published studies employing identical...
The Configural Advantage in Object Change Detection Persists across Depth Rotation
Although traditionally there has been a debate over whether object recognition involves 3-D structural descriptions or 2-D views, most current approaches to object recognition include the representation of object structure in some form. An advantage...
The Ground Dominance Effect in the Perception of Relative Distance in 3-D Scenes Is Mainly Due to Characteristics of the Ground Surface
Previously, we (Bian, Braunstein, & Andersen, 2005) reported a dominance effect of the ground plane over other environmental surfaces in determining the perceived relative distance of objects in 3-D scenes. In the present study, we conducted three...
The Perception of Visually Presented Yaw and Pitch Turns: Assessing the Contribution of Motion, Static, and Cognitive Cues
Terrestrial gravity restricts human locomotion to surfaces in which turns involve rotations around the body axis. Because observers are usually upright, one might expect the effects of gravity to induce differences in the processing of vertical versus...
The Subjective Duration of Ramped and Damped Sounds
Two experiments demonstrate that the perceived durations of sounds as long as 1 sec are influenced by the sounds' amplitude envelopes, extending Schlauch, Ries, and DiGiovanni's (2001) observations on sounds of 200-msec duration. Sounds with a monotonic...
The Time Course of Preview Search with Color-Defined, Not Luminance-Defined, Stimuli
We examined the time course of preview search, using stimuli that were defined by color, but not by luminance changes. We demonstrate that, under these conditions, search performance in a preview condition improved selectively over time, relative to...
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