We investigated oculomotor anticipations in 4-month-old infants as they viewed center-occluded object trajectories. In two experiments, we examined performance in two-dimensional (2D) and three-dimensional (3D) dynamic occlusion displays and in an additional 3D condition with a smiley face as the moving target stimulus. Rates of anticipatory eye…

Dynamic spatial indexing is the ability to encode, remember, and track the location of complex events. For example, in a previous study, 6-month-old infants were familiarized to a toy making a particular sound in a particular location, and later they fixated that empty location when they heard the sound presented alone ("Journal of Experimental…

The ability to detect and prefer a face when embedded in complex visual displays was investigated in 3- and 6-month-old infants, as well as in adults, through a modified version of the visual search paradigm and the recording of eye movements. Participants "(N" = 43) were shown 32 visual displays that comprised a target face among 3 or 5…

In this study, 6-month-olds' perception of an object-related human grasping action was compared with their level of grasping performance using a within-participants design. In the action perception task, infants were presented with the video of an actor's grasping movement toward an occluded target object. Subsequently, an expected and an…

We investigated 4-month-olds' oculomotor anticipations when viewing occlusion stimuli consisting of a small target that moved back and forth repetitively while the center of its trajectory was occluded by a rectangular screen. We examined performance under five conditions. In the "baseline" condition, infants produced few predictive relative to…

An eye tracking methodology was used to evaluate 3- and 4-year-old children's sensitivity to speaker affect when resolving referential ambiguity. Children were presented with pictures of three objects on a screen (including two referents of the same kind, e.g., an intact doll and a broken doll, and one distracter item), paired with a prerecorded…

Short-term changes in visual behavior observed in 80 infants (3-9 months) parallel changes observed across age by Piaget and fit well his assumption that the infant's increasingly sophisticated action patterns evolve by successive accomodations to encountered phenomenon. (WY)

Thirty-two three-month-old infants participated in two experiments showing color videotapes of facial stimuli in a paired comparison format. Suggests that contrast in effect of eye contact availability and rather subtle stimulus motion (blinking) implies that three-month-old infants are comparatively insensitive to being the object of another's…

Two studies involving children (mean age of 10 years) and adults investigated the effects of visual stimulus onsets and offsets on the latency of saccades to peripheral targets. Results were interpreted as indicating that, while stimulus intake processes have a greater interference effect on children's eye movements, oculomotor processes are…

Examines the latency and the accuracy of adult's and children's saccades under optimal warning and no-warning conditions. Subjects were nine adults (mean age =23.7) and nine elementary school students (mean age =8.5). (Author/MP)

The eye movements of infants, between 4 and 11 weeks old, were recorded while they viewed either a representation of a face or nonface stimulus. (Author/SB)

Three experiments were performed using an aperture-viewing technique to assess the accuracy of shape perception when subjects were required to emit eye movements in order to pick up shape information, compared with the accuracy of shape perception when subjects were not required to emit eye movements. All three experiments explored whether the…

The eye movements of subjects, ages 4 through 62, were recorded by a corneal reflection technique during familiarization with and recognition of random patterns of luminous dots. Findings were consistent with the views of both Soviet researchers and Piaget, that overt, perceptual activity diminishes with increasing age. (Author/SDH)