Four major types of interaction of stimulus dimensions based on perceptual research are described: integral, configural, separable, and asymmetric separable. Implications of these interactions for concept and choice processes are discussed. (Author/DEP)

Examines, in 30 normal infants from three age groups, differences in exploratory and sucking responses to artificial nipples varying in material and shape. Results suggest the existence of a developmental trend influenced by the type of nipple. Findings support the view that the mouth has a perceptual as well as a nutritive function. (Author/RH)

Forty adults with adventitious blindness were administered 12 different Braille discrimination tests representing combinations of standard or enlarged Braille and various amounts of horizontal and vertical spacing. Findings indicated that the most favorable discrimination conditions occurred with standard-sized Braille, with three spaces between…

In two experiments, forty 26-week-old infants were repeatedly exposed to an object and were then shown an object that was different from the original object in color, shape and/or texture. Results showed that looking and manipulation increased for the novel shape and texture objects and looking increased for the novel color object. (Author/JMB)

The developmental change from global toward dimensional classifications, usually observed in vision, was investigated in haptics with stimuli varying according to their size and roughness. Results indicated that, although more overall similarity classifications were observed in children than in adults, this kind of classification was never…

This study investigated infants' differential responding to novel and familiar stimuli after familiarization in a different sensory modality. Results showed that infants gain information about the shape of objects from their oral experience with them and that this information can be transferred to the visual modality. (Author/JMB)

Analysis of 40 first-grade children's performance on two discrimination learning problems revealed that children do transfer dimensional information between the visual and tactual modalities. (Author/JMB)

The effects of stimulus dimension and mode of exploration on preschool children's responses to pattern meanings and unusual uses tasks of original thinking were studied. The 3D tasks generated more responses overall. Visual and haptic exploration combined with 3D was the only condition studied to meet all criteria for construct validity.…

Tests of dimensional dominance with planometric stimuli in either the visual or haptic modality were given to 108 children, 36 from each of the grade levels preschool, kindergarten, and first. Visual dimensions were form and color; haptic dimensions were form and texture. Following initial dominance assessment, one-third of the subjects were…

Results suggest that selective attention is a multifaceted skill, with development of its parts progressing at different rates. (Author)

Determines whether early hemispheric differences exist in tactual processing by testing infants and preschoolers on six cross-modal tasks. Results are the first to demonstrate a left-hand superiority for information processing in children as young as two years. (Author/AS)

A sequential-touching task was used to investigate whether 14-month-old infants can rapidly change how they categorize a set of objects, recognizing new groupings of objects they had previously categorized in a different way. When presented with a collection of objects that could be categorized by shape (balls vs. blocks) or material (soft vs.…