The present experiment investigated whether rats formed emergent, untrained stimulus relations in many-to-one matching-to-sample discriminations. In Phase 1, rats were trained to match two samples (triangle and horizontal stripes) to a common comparison (horizontal stripes) and two additional samples (circle or vertical stripes) to another…

In this study, we investigated relations between infants' understanding of intentional actions and measures of social responsiveness during a transitional period, 9- to 11-months. Infants (N = 52) were tested in visual habituation paradigms tapping their understanding of the relation between a person and the object of her attention. Measures of…

Textons are elongated blobs of specific color, angular orientation, ends of lines, and crossings of line segments that are proposed to be the perceptual building blocks of the visual system. A study was conducted to explore the relative memorability of different types and arrangements of textons, exploring the time course for the discrimination…

Confirmed the hypothesis that those in the three-dimensional instructional group would make fewer confusion errors that those in the two-dimensional instructional group on a transfer task in reading. (RB)

Based on PhD thesis submitted to Brown University (June 1967).

The effects of classical factors, such as symbol geometry, symbol brightness, and brightness contrast, upon the legibility of numerals and capital letters are discussed. Included is a consideration of the literature of the last few decades relevant to the specification of acceptable operator performance criteria which must be met by a given…

Several studies have indicated that children have difficulty differentiating mirror-image stimuli. In the present study adults were required to classify pairs of horseshoe stimuli as same or different. Response times were compared for stimulus pairs that varied in orientation (left-right vs up-down) and spatial plane of the pair (horizontal vs.…

Presents an overview of some of the major concerns for teachers of Image Study in higher education and offers examples of image sets useful for concept teaching. (MH)

Offers a brief student analysis of the visual elements which compose the front pages of two daily British newspapers in a single day. (MH)

Evaluates models of infant visual preferences with predictions based on the physical attributes of visual patterns using pairs of schematic faces and abstract patterns identical except for contrast reversals. Results suggest that a fundamental change in the determinants of visual preference occurs postnatally between 6 and 12 weeks. (Author/RWB)

Two variants of the habituation paradigm were used to investigate fine orientation discrimination and shape constancy in 34 young infants. Results demonstrate that conditions determine whether young infants show sensitivity to relatively fine variations in pattern orientation or give evidence of shape constancy with the same patterns. (HOD)

Four experiments assessed converging aspects of four-month-old infants' perceptions of visual patterns. Results together corroborate and extend previous findings that vertical symmetry has a special status in early perceptual development and that infants can perceive pattern wholes. (Author/AS)

Three experiments are described which relate to models of infant visual preferences and to the ways in which preferences can be modified or created by habituation. Results suggest that the Banks and Salapatek's contrast sensitivity model can be a powerful predictor of preferential looking in newborns and that preferences based on experience can be…

Eye movement of nonreaders (kindergarten subjects) and readers (third-grade subjects) were measured during a visual discrimination task involving matched and unmatched pairs of four-letter pseudowords. Both quantitative and qualitative analyses support the conclusion that the development of perceptual strategies is a direct result of increasing…