Perceived velocity as a function of reference mark density

The effect on apparent visual speed of varying the density of stationary reference marks evenly distributed along the path of motion of a point of light was measured using tactile comparison motion. The sensitivity of the tactile method of measuring visual speed was supported by the finding that the tactile measures increased with each increase in physical speed of the point of light, other factors held constant. This procedure was applied in two experiments to visual displays in which the physical speed, extent of motion, and number and density of reference marks was varied. Only reference mark density, in addition to physical speed, was found to be a signficant (and robust) factor in determining perceived speed. The effect of reference mark density is explained in terms of the increasing contribution of relative motion cues to the perception of visual speed as a funciton of the average separation (or average adjacency) of the moving point from surrounding reference marks.     

A PROPOSAL FOR A COMMON DATA EXCHANGE FORMAT FOR REPERTORY GRID DATA

Repertory grid interviews provide information about the psychological space of people in matrix-structured form, providing a basis for the statistical analysis of results. Today there are many software packages available for the elicitation and analysis of repertory grids, most of them with unique features. But access to this wealth of options is restricted because, at present, repertory grid programs store data in different formats. As a result, anyone who has tried to exchange data between programs knows that this is not an easy task, as the exchange typically requires tedious and error-prone reentering of the data. To enable direct and error-free data exchange between repertory grid programs, we propose a common data format for repertory grid software based on the Extended Markup Language (XML). It is important to note that users do not have to learn XML to take advantage of this common data format. Data sets of current analysis programs can be translated into XML by utilities. As a basis for further discussion we have developed sample applications and utilities that are based on this new data format.     

An Examination of Employee Reactions to Perceived Corporate Citizenship1

There has been little research focus to date on individual level reactions to corporate citizenship. Our study attempted to understand better how corporate citizenship affects job behaviors and employee feelings by examining a hypothesized positive effect of perceived corporate citizenship (PCC) on 3 dependent variables: work‐role definitions, organizational citizenship behavior, and organizational identification. Additionally, the personal value of other‐regarding value orientation was hypothesized to interact with PCC. The findings supported 4 of 6 hypotheses. We consider theoretical and practical implications of how corporate citizenship impacts employees.