Model for a three-dimensional optical illusion

A homogeneous coordinate system is used to describe the transformation from a real three-dimensional stimulus to an illusory three-dimensional perceptual object. The model comprises a series of transformations of which one acts as an illusion operator. The illusion operator is specified by a single parameter whose value determines whether the real or the illusory object is perceived. An experiment to test one prediction derived from the model was performed. The results confirm the prediction.     

Subjective contours in stereoscopic space

Stereoscopic depth and subjective contour clarity were manipulated by varying the type of monocular configuration as well as magnitude and direction of disparity. The clarity of the subjective contours was influenced significantly by both magnitude and direction of disparity and by the type of monocular configuration. Subjective contours were always less clear when the objective monocular contour was discontinuous regardless of disparity. Stereoscopic depth estimates varied directly with magnitude and direction of disparity; however, depth magnitude reports were truncated when the disparity was carried by discontinuously defined patterns.     

Role and justice considerations in the attribution of responsibility to a rape victim

This study was designed to assess the extent to which social role and “just world” considerations would affect perceptions and attributions of responsibility to a rape victim. The rape victim was either a topless-bottomless dancer, a social worker, or a Catholic nun, and she was either acquainted or unacquainted with her assailant. In the acquainted condition, the dancer was attributed the greatest and the nun the least amount of responsibility, indicating that social role factors can govern the range of attributional judgments which might be made in any given instance. However, unacquainted victims were ascribed more responsibility for the rape than were acquainted victims, a difference which was significant when the victim was the nun. The latter findings are discussed in terms of Lerner's just world hypothesis. Significant sex differences were found in subjects' perceptions of and responses to the rape incident and, contrary to earlier findings, no relationship was found between victim attractiveness and punitiveness toward the wrongdoer.     

Dichotic competition of simultaneous tone bursts of different frequency: IV. Correlation with dichotic competition of speech signals

Presentation of dichotic chords to thirty subjects showed that 23% were right ear dominant, 40% were left ear dominant and 37% had no marked ear dominance. Presentation of dichotic consonant-vowel (CV) signals to the same subjects showed that 70% were right ear dominant and 30% were left ear dominant. Despite the fact that an ear dominance effect was present for both speech and non-speech sounds there was no significant correlation (either positive or negative) between an individual's performance on the two tasks. The performance of native speakers of tonal languages and of musicians was not significantly different from the experimental group of English speaking subjects. These results suggest that the two ear dominance effects are unrelated.     

Deceit as a function of sex of subject and target person

Thirty male and female undergraduates were run in same- and opposite-sex pairs to determine if the extent of experimentally sanctioned deceit would be influenced by sex pairings and potential for harm to another's self-esteem. Ss, who all believed they were playing the role of a teacher in a learning experiment, were instructed to provide false feedback (lie) at least three times during 30 trials to a learner, the other S. Consistent with hypotheses derived from a consideration of the potential harm to another's self-esteem and a suggested norm of white lying, perceived relative importance of male and female sex roles, and greater female concern for the social welfare of others, it was found that white lies occurred significantly more often than lies, that males were significantly more likely to give false feedback than females, that females were the target of false feedback significantly more often than males, and that the interaction between sex of S and sex of target person was also significant in that males lied to females more than any other sex pairing.This research was partially supported by the New Mexico Highlands University Institute of Scientific Research. A brief version of this report was presented at the Rocky Mountain Psychological Association meeting, Denver, May, 1974.     

Technical standards and performance standards in the pursuit of quality

The concept of standards lacks clarity because it is applied both to concrete specifications and to the assessment of quality. Confusion is reduced by introducing the notion of interchange expectancy. distinguishing transfer, coupling, and market success as components. Transfer expectancy depends upon the products to be transported or exchanged, but when there is a need to estimate transfer expectancy, a combination of technical standards and performance standards must be applied. Though performance standards are intended to produce quality, the quality of the instrumentation to measure performance standards is often neglected. The development of high-quality performance standards first requires the delineation of the relevant dimensions of performance quality. The process of giving precision to performance standards may lead to the emergence of more acceptable technical standards. To illustrate some of these points, data is presented from the CONDUIT system for quality evaluation of computer-based curriculum materials. The performance quality of these products includes the dimension of transfer expectancy, as well as educational and scientific merit. Increased specification and impact of technical standards may provide greater incentives to authors and hence lead to the invention of products which have higher educational and scientific quality.