Integration of hand and finger location in external spatial coordinates for tactile localization

Tactile stimulus location is automatically transformed from somatotopic into external spatial coordinates, rendering information about the location of touch in three-dimensional space. This process is referred to as tactile remapping. Whereas remapping seems to occur automatically for the hands and feet, the fingers may constitute an exception in that some studies have implied purely somatotopic coding of touch to the fingers. When participants judge the order of two tactile stimuli, they often err when the stimulated body parts (usually the two hands) are crossed, presumably because somatotopic and external coordinates are in conflict in crossed postures. Using this task, we investigated, first, whether the fingers are unlike other limbs with regard to spatial coding, by testing whether crossing effects, indicative of external coding, were observable when stimulating two fingers, either on the same or on different hands. Second, we investigated the interaction of hand and finger posture in tactile localization of finger stimuli. Crossing effects emerged when fingers and hands were crossed, suggesting external coding for all body parts. Crossing effects were larger when both hand and finger were located in the hemifield opposite to their body side, and smaller when only hand or finger lay in the opposite hemifield. We suggest that tactile location is estimated by integrating the external location of all relevant body parts, here of a finger and its belonging hand, and that such integrative coding may represent a general principle for body part processing as well as for tool use.     

Logics preserving degrees of truth

The paper introduces a concept of logic applied to a formalization of the so-called inferences preserving degrees of truth. Semantical and syntactical characterizations of three kinds of logics preserving degrees of truth are provided. The other approach than in [3] and [9] to the problem of expressing that a sentence is less true than a sentence is presented.     

‘Numerical trap’. A new look at outcome representation in studies on choice behaviour

In almost all experimental studies on choice behaviour the consequences of choices are limited to denumerable goods (usually money) and represented in a numerical way. It is argued that a different way of representing consequences would cause differences in social orientations. In an exploratory study (1) the kind of consequences (money, satisfaction with money and satisfaction with the situation) and (2) the way of representing consequences (numbers, rectangles, and faces) were varied. No differences were found between the three kinds of consequences represented by rectangles. Representation of money by numbers did not differ from representation of money by rectangles. However, subjects in the condition in which satisfaction with money was represented by faces were more cooperative and altruistic and less equality-oriented than subjects in the corresponding condition in which satisfaction with money was represented by rectangles. Additional correlational analyses showed differences between ways of representing consequences. It was concluded that both for theory and for future research it is important to consider how consequences are represented.     

The role of humor in the interpretation of sexist incidents

This study investigated the role of humor, gender, and sexist attitudes toward women in the interpretation of sexist incidents. Thirty female and thirty male university students rated the humorousness of and the reactions to recent sexist incidents on Canadian university campuses. As predicted, perceiving sexist incidents as humorous was associated with the tendency to see them as less sexist, to understand the actions and attitudes displayed as more acceptable, and to believe one would have shown approval of the latter. Path analysis indicated that gender did not affect the interpretations of and reactions to these incidents, and that the influence of sexist attitudes toward women was mainly indirect—that is, via their impact on the perception of humorousness.