The influence of stimulus number and familiarity on judged duration were investigated. Results showed that the number of stimulus elements presented within a given interval affected its perceived duration, although the familiarity of those elements (as defined herein) did not. (Editor/RK)

Although Ss underestimated the size of the illusion in the predicted direction, no significant correlations between size of illusion and either age or IQ were found. (Authors)

The present paper is concerned particularly with the processes underlying the perception of the upright, that is, an object in its usual, or familiar, position in space. (Author/RK)

The implications of the results of this study for theories of cross-modal performance are discussed. (Author)

Cumulative evidence obtained from this and other studies suggests that perceptual training to attend to shape and object contours will affect representational drawing. (Authors/MB)

This report includes a description of the Frostig as a total instrument and an overall analysis, as well as separate analyses and descriptions of each subtest. A brief summary of the experimental design and sampling plan also is included. A summary of the AEL Early Childhood Program is available as PS 004 889. (Author/NH)