Since birth, infants develop the ability to perceive a wide range of intersensory relations among various kinds of amodal temporal information. This study addresses the development of the ability to perceive duration-based intersensory relations. Three groups of infants, four, seven and 10 months old, participated in two trials of an intersensory…

Young infants perceive an object's trajectory as continuous across occlusion provided the temporal or spatial gap in perception is small. In 3 experiments involving 72 participants the authors investigated the effects of different forms of auditory information on 4-month-olds' perception of trajectory continuity. Provision of dynamic auditory…

Audiovisual speech consists of overlapping and invariant patterns of dynamic acoustic and optic articulatory information. Research has shown that infants can perceive a variety of basic auditory-visual (A-V) relations but no studies have investigated whether and when infants begin to perceive higher order A-V relations inherent in speech. Here, we…

In this article, the authors introduce a new theoretical framework for understanding intersensory development. Their approach is based upon insights gained from adults who experience synesthesia, in whom sensory stimuli induce extra cross-modal or intramodal percepts. Synesthesia appears to represent one way that typical developmental mechanisms…

Outlines two competing hypotheses concerning the nature of inter-modal sensory development. Research on auditory-visual coordination in young human infants is reviewed. It is concluded that the data support the notion of ontogenetic development being a process of intergration between sensory systems that are initially relatively independent.…

Four experiments studied the perception of the unity and boundaries of objects by 88 4-month-old infants who manipulated them out of the visual field. Infants perceived the unity/boundaries of these objects by detecting the motion patterns they themselves produced. Discrimination between motion patterns transferred from touch to vision. (SLD)

Investigated the extent to which 3.5-month-old infants trained in amodal auditory-visual relations between falling objects and the sounds they made could generalize their intermodal knowledge to a new task and across events. Found that infants tested with familiar events and with events of a new color or shape showed learning and transfer…

Goals and challenges pertaining to infant sensory and perceptual development are discussed. It is suggested that the inability of researchers to think and talk wisely about "partial accomplishments" in development creates a barrier in developmental research. Conceptual schemes are needed to accommodate these partial accomplishments. Three major…

Recent studies have reported that preverbal infants are able to discriminate between numerosities of sets presented within a particular modality. There is still debate, however, over whether they are able to perform intermodal numerosity matching, i.e. to relate numerosities of sets presented with different sensory modalities. The present study…

Relevant orientation and mobility (OM) skills for visually impaired infants foster sensory, motor, and conceptual development. OM personnel need to consider alternative teaching models, personnel preparation needs, sensory aids issues, and research issues. (DB)

Three experiments assessed the intersensory redundancy hypothesis in early infancy. Findings indicated that habituation to a bimodal rhythm resulted in discrimination of a novel rhythm, whereas habituation to the same rhythm presented unimodally resulted in no evidence of discrimination. Temporal synchrony between the bimodal auditory and visual…

The purpose of this study was to see if a change in environment affected the rate of sensorimotor development in infants. First a control group of institutionally-reared infants aged 1 to 6 months was observed to determine average age of visually directed reaching, visual exploration, visual accommodation, and the blink response. Then the…

The program activities, curriculum, and evaluation of the Pennsylvania Research in Infant Development and Education (PRIDE) Project are described in this report. The project is an educational effort to accelerate the development of children, 12-52 months of age, by providing developmentally enriching experiences in a controlled environment which…