Spatial and movement-based heuristics for encoding pattern information through touch

Seven experiments investigated the heuristics people use to encode spatial pattern information through touch. Observers traced a tangible pathway with one hand and then answered questions about either the euclidean line between the pathway endpoints or the pathway itself. Parameters of the euclidean line were held constant, while characteristics of the felt pathway were manipulated. Experiments 1-4 showed that blindfolded sighted and blind observers increasingly overestimated the length of the euclidean line as the length of the explored pathway increased. This indicates a movement-based heuristic for encoding distance. Experiments 5-7 indicated that judgments of the position of the euclidean line did not vary with the position of the felt pathway or the extent to which it deviated from that line. Instead, the results indicated that observers relied on implicit spatial axes, which are movement independent, to judge position. These and other results have implications for theories of haptic encoding of spatial pattern and for the construction of tangible graphics displays.     

Perception of motion in equiluminous kinematograms

Two fields of random dots that were identical except for a slight shift in a central square region were presented in rapid alternation. This produced a vivid impression of a square moving back and forth above the background. When the kinematogram is presented in equiluminous red/green, the motion of the central region can still be seen, although over a narrower range of alternation rates, interstimulus intervals, and displacements than for black/white presentation. The perception of motion for equiluminous stimuli indicates that colour and motion can be analyzed conjointly by the visual system. However, as originally reported by Ramachandran and Gregory, the segregation of the oscillating central square from the background is lost at equiluminance. This segregation process therefore appears to be colour-blind.     

Interaction with a baby by young adults: A comparison of traditional and feminist men and women

Recently, researchers have examined college students' interactions with unfamiliar babies. Most of the studies have reported that men and women show equal level of interest in these babies. However, one researcher reported a sex difference, with women interacting with a baby more than men did. Perhaps the subjects in the discrepant study were a more conservative or traditional group. In order to examine this possibility, this study compared traditional and feminist young adults. The Attitudes Toward Women Scale was used to preselect feminist and traditional men and women who were videotaped during a period of interaction with a baby. It was predicted that a sex difference would be found among the more traditional subjects only. However, women interacted with the baby more than men did in both groups.This project was supported by a grant to the author from the University of Wisconsin — Eau Claire research grant program. The author would like to thank Rhonda Kienitz, who collected and coded the data; Kay Draeger, who served as reliability coder; and Tom Blakemore, Allen Keniston, and Blaine Peden for their helpful comments.     

Individual differences in the orienting response: Nonresponding in nonclinical samples

The complete failure of the electrodermal orienting response (OR), although widely studied in clinical samples, has received little systematic attention in work with healthy adults. The published studies of nonresponding using nonclinical samples are reviewed, with data from three unpublished studies pertinent to the question, to identify the characteristics of nonresponders. The most durable findings to date are that nonresponding shows both trait and state characteristics, and that nonresponders are more likely to be female than male, to show hypoarousal in the electrodermal system but not complete unresponsiveness in this system or low arousal in other systems, and to show higher scores on measures of impulsiveness and antisociality but not to differ from responders in terms of sensation seeking. Most of these data can be reconciled with two different accounts of the OR mechanism. One is that proposed by I. Maltzman which postulates a difference between voluntary and involuntary ORs, and the other is that of J. A. Gray which proposes that the OR is a function of activity in a Behavioural Inhibition System. Taken together, these accounts imply that the OR reflects attentional and affective processes, and that both cognitive style and temperamental differences in the appraisal of threat can lead to electrodermal nonresponding.     

Two Politicians in a Realistic Experiment: Attraction,Discrepancy, Intensity of Delivery,and Attitude Change1

The leader of the Socialists in the Dutch Parliament and his Liberal opponent participated in this realistic experiment. Identical TV interviews with the two politicians were recorded and shown to subjects of both parties. The intensity of delivery was also varied: emotional versus rational. Our findgins indicated that the experimental interveiw changed the attitude of the subjects. In addition, support was found for a second hypothesis: Attitude change was greater for the attractive source from the same party than for the less attractive source from the opposite party. Furthermore, our expectations were confirmed that attitude change would be greater with high than with low discrepancy. Although the intensity of delivery did have an effect on the credibility of the source–the emotional delivery scored lower–no effect on attitude change was found.     

A psychological approach to ethics

This article has the purpose of calling attention to C.G. Jung's archetypal concept of the Self as an approach to ethics. The distinction between simple morality and transcendent ethics is established. Comparison is made between the archetype of the Self and Kant's categorical imperative. Freud's superego, however, is assimilated to a natural outlook on morality, such as the notion of altruism in sociobiology. The superego is only the psychic effect of the current moral code—which could be explained either culturally or as a Lamarckian acquired characteristic of the unconscious. Jung's transcendent ethics is expressed in an ethical mandala.