Extraversion and task properties as determinants of incidental recall

The present research investigated in a dual task design the effects of extraversion level and structural task properties on the recall of an incidentally learned text. First, the hypothetical relation between arousal level and attentional selectivity was tested. Second, the relation between structural levels in the text and recall of text elements was studied. It was found that (a) extraverts performed significantly better on incidental recall compared to introverts; (b) the nuclear sentences at the top of the hierarchical structure were the best recalled sentences, independently of arousal level; (c) the effect of differences in arousal on recall was only significant in case of the top sentences. The effect was absent in case of specificúsecondary sentences.     

The concepts of depression,anxiety, and neuroticism in questionnaires

In this study, the relations among depression, anxiety, and neuroticism measured by self-report questionnaires were investigated. Subjects were 207 psychiatric patients. High correlations were found among self-report scales purporting to measure depression, anxiety, and neuroticism. Results of a content analysis showed considerable overlap among these scales. A division of items into six content categories did not result in lower correlations compared to the original scales.     

PAST: Viewing the programming process

A software package called PAST (Programmer Assessment Software Tools) is described. PAST was designed as a research and diagnostic tool to analyze how programmers develop and test program code. PAST uses line changes between successive compiles to estimate a programmer’s cognitive processing. Line changes are highlighted and graphically presented between any two versions or compiles. Summary graphs and statistics across all versions also are provided. Applications of PAST for expanding our understanding of programming and applying it to research, teaching, and learning are discussed.     

Personal computer software for teaching differential psychodiagnostics

The third edition of theDiagnostic and Statistical Manual of Mental Disorders (American Psychiatric Association, 1980), outlines for the student what symptoms to consider when attempting to arrive at an accurate differential diagnosis of eight broad psychiatric categories. This paper describes a program developed to instruct a medical or graduate student in the science of such decision making.     

A sample-to-disk system for psychomusical research

A hardware-and-software system is described that permits musical-bandwidth signal quantization, monophonic or stereophonic, direct to/from hard disk. The system, which uses an IBM AT or compatible, is cost effective and device independent. Software functions allow for automated aural and graphical signal analyses. Perceptual experiments that use contextual, natural-instrument stimuli, and that take advantage of the immediate and random access provided by this system, are described.     

A method for calibrating the spatial coordinates of a visual display to high accuracy

High-resolution CRT displays are subject togeometric distortion: lines that are straight in the internal coordinates of the graphics software and hardware are curved when projected onto a plane in the observer’s line of sight. As the available resolution of CRT screens increases, it becomes more difficult to measure and correct for this distortion. We present a simple, highly accurate method for determining the mapping between internal coordinates and the viewing plane. It requires that an observer, using a calibration program, adjust triples of displayed points until they are collinear. A metal straightedge placed between the observer and the screen aids in this judgment. We describe the calibration of an IBM Enhanced Graphics Display in high-resolution mode (350 × 640 pixels), and illustrate how to use the estimated mapping to choose internal coordinates to draw undistorted figures that are accurate to within 0.5 pixel. The method can be used to assess or to correct the accuracy of visual displays. The method is relevant to experiments in spatial vision, spatial perception, perception of dot patterns, and any application in which geometrically accurate stimuli are required.     

Innovative knowledge Utilization through information transfer: A new relationship between libraries and user organizations

In our rapidly changing environment, both profit and non-profit organizations confront an increasing demand for technological, economic, and social innovation. In response to this demand, organizations are taking on the role of “change agents” by transforming existing practices into innovative action. Libraries, as centers that accumulate and disperse knowledge, can support these organizations in their “change agent” roles. This paper delineates the way public libraries can help organizations meet the increasing need for external information associated with innovation. Policy issues concerned with efficient information transfer to user organizationss are specified, and two concrete examples of information transfer systems are described. In order to best utilize existing knowledge,personal-professional assistance in selecting potentially innovative,impersonal written materials is recommended. Dr. Celeste P. M. Wilderom is an assistant professor at the School of Economics of the Free University of Amsterdam, The Netherlands and a research associate in organization behavior at the School of Management, S.U.N.Y., Buffalo. NY 14260. Her Ph.D. is in organizational psychology from S.U.N.Y., Buffalo, Where she taught in the Schools of Management and Social Work. Dr. Wilderom's research interests are behaviors in service and nonprofit organizations, problems of cross-cultural managemet and educational issues in the social sciences.