Real-world objects can be viewed at a range of distances and thus can be experienced at a
range of visual angles within the visual field. Given the large amount of visual size variation …

Many studies have shown that subjects are faster at categorizing objects into “basic”
concepts than into more general superordinate concepts. However, all of these studies have …

In 1969 we initiated the first experiment in a continuing series designed to measure the
times that human subjects require to respond discriminatively to spatially transformed visual …

In 5 experiments, it was found that judging the relative location of 2 contours was more
difficult when they belonged to 2 objects rather than 1. This was observed even when the 1 …

The distorted room illusion (DRI) and the attendant argument for perceptual ambiguity is
critically analyzed from a Gibsonian/ecological point of view. The notions of multiple …

Abstract Objects can be characterized by a number of properties (eg, shape, color, size, and
location). How do our visual systems combine this information, and what allows us to …

The primary visual sources of depth and size information are binocular cues and motion
parallax. Here, the authors determine the efficacy of these cues to control prehension by …

Three experiments investigated the frames of reference used in memory to represent the
spatial structure of the environment. Participants learned the locations of objects in a room …

Three experiments investigated the role of visual attention in priming for object images and
their left–right reflections. Objects to which participants attended were visually primed in both …

The authors used a virtual environment to investigate visual control of reaching and
monocular and binocular perception of egocentric distance, size, and shape. With binocular …