Although human infants demonstrate early competence to retain visual information, memory capacities during infancy remain largely undocumented. In three experiments, we used a Visual Paired Comparison (VPC) task to examine abilities to encode identity (Experiment 1) and spatial properties (Experiments 2a and 2b) of unfamiliar complex visual…

Previous research on dual-tasks has shown that, under some circumstances, actions impair the perception of action-consistent stimuli, whereas, under other conditions, actions facilitate the perception of action-consistent stimuli. We propose a new model to reconcile these contrasting findings. The planning and control model (PCM) of motorvisual…

The magnitude of the association between developmental dyslexia (DD) and motion sensitivity is evaluated in 35 studies, which investigated coherence motion perception in DD. A first analysis is conducted on the differences between DD groups and age-matched control (C) groups. In a second analysis, the relationship between motion coherence…

The present study evaluated the effects of both a traditional lecture and the conservative dual-criterion (CDC) judgment aid on the ability of 6 university students to visually inspect AB-design line graphs. The traditional lecture reliably failed to improve visual inspection accuracy, whereas the CDC method substantially improved the performance…

The effectiveness of training procedures which used visual-visual arbitrary matching, blocked-trial matching-to-sample, and successive discrimination training to teach visual-visual discrimination of two-dimensional forms was evaluated with two men having severe mental retardation. Results indicated that the procedures did establish conditional…

Eight crows were taught to discriminate overlapping pairs of visual stimuli (A+ B-, B+ C-, C+ D-, and D+ E-). For 4 birds, the stimuli were colored cards with a circle of the same color on the reverse side whose diameter decreased from A to E (ordered feedback group). These circles were made available for comparison to potentially help the crows…

This technical report contains papers prepared by the 11 speakers at the 1980 Lake Wilderness (Seattle, Washington) Conference on Attention. The papers are divided into general models, physiological evidence, and visual attention categories. Topics of the papers include the following: (1) willed versus automatic control of behavior; (2) multiple…

People categorized pairs of perceptual stimuli that varied in both category membership and pairwise similarity. Experiments 1 and 2 showed categorization of 1 color of a pair to be reliably contrasted from that of the other. This similarity-based contrast effect occurred only when the context stimulus was relevant for the categorization of the…

This study was designed to investigate the effects of certain aspects of the outdoor environment on the spatial perceptions of the occupants of residential settings. Among the findings were data suggesting that a dormitory room is more territorial for females than for males; thus females are more susceptible to crowding effects. (DS)

To measure how the complexity of a television image affects the viewer's ability to identify or recognize visual details within the image, two coders rated the form complexity of 30 public service announcements, basing their evaluation on the familiarity of the images in the announcements, the rate at which they presented new information, and the…

This is the fifth in a series of technical research reports by Harvard Project Zero which study artistic creation and comprehension as a means toward better art education. The three papers in this report all concern the bearing of projective geometry on the perceptual processes by which pictures are "read" for spatial information. The…