Recent visual marking studies have shown that the carry-over of distractor inhibition can impair the ability of singletons to capture attention if the singleton and distractors share features. The current study extends this finding to first-order motion targets and distractors, clearly separated in time by a visual cue (the letter X). Target…

Attempts to clarify the basis for the unusual responses to observed movement by 7-year-old children, as compared to adults, discovered by Olum. Subjects were 40 first and third graders. Results indicate that these responses are genuine and that they go through a developmental evolution. (SDH)

Since vision is the main source of perceptual information, this study attempted to assess the effect of motion information on the ability of ninety-two, first-grade children to analyze and depict spatial relationships. Three groups of children received either motion picture or stationary visual training to compare motion effects with methods more…

Thirteen infants were presented with a moving object under two lighting conditions to investigate the role of vision in early reaching. Infants were tested twice, at 5 and 7.5 months of age. The results suggest that proprioceptive feedback and sight of the target allowed for successful reaching with limited visual information, even in relatively…

The reaction times, movement times, and final accuracy of hand movements of 6, 8, and 10 year olds that were directed toward visual goals were measured by means of tasks in which direction and amplitude components of movement were required. (RH)

Infants' ability to track temporarily occluded objects that moved on circular trajectories was investigated in 20 infants using a longitudinal design. They were first seen at 6 months and then every 2nd month until the end of their 1st year. Infants were presented with occlusion events covering 20% of the target's trajectory (effective occlusion…

A fundamental question of perceptual development concerns how infants come to perceive partly hidden objects as unified across a spatial gap imposed by an occluder. Much is known about the time course of development of perceptual completion during the first several months after birth, as well as some of the visual information that supports unity…

The purpose of this study was to determine the sources of visual information used by highly skilled tennis players in anticipating their opponent's shots. In Experiment 1, motion analysis of the strokes showed that the relative motion between the racquet and forearm was different between the ground strokes and lobs, but there were no reliable…

The aim of the 2018 International Association for Development of the Information Society (IADIS) Cognition and Exploratory Learning in the Digital Age (CELDA) conference was to address the main issues concerned with evolving learning processes and supporting pedagogies and applications in the digital age. There have been advances in both cognitive…

Discusses how an individual's visual system processes cues to motion in depth. A theoretical model of the operations of the visual system that underlie the perception of motion in depth is included. (HM)

A study involving 48 undergraduates found a link between motion detection and letter-position encoding and a positive relationship, albeit a nonlinear one, between motion detection threshold and the likelihood of making letter errors. This result held when age, IQ, reading age, and phonological awareness were taken into account. (CR)

This paper, in reviewing four different studies, discusses the influence of some basic parameters or aspects of a sign on the accuracy of perceiving that sign. This information can aid the teaching of signs to the mentally retarded, the autistic, the cerebral palsied, and the hearing adult. A series of studies was conducted in which the aim was to…

Visual perception may be a developmental prerequisite to some types of social understanding. The ability to perceive social information given visual motion appears to develop early. However, children with autism have profound deficits in social cognitive function and may fail to see social motion in the same way that typically developing children…