Handling mathematical objects: representations and context

This article takes as a starting point the current popular anti realist position, Fictionalism, with the intent to compare it with actual mathematical practice. Fictionalism claims that mathematical statements do purport to be about mathematical objects, and that mathematical statements are not true. Considering these claims in the light of mathematical practice leads to questions about how mathematical objects are handled, and how we prove that certain statements hold. Based on a case study on Riemann’s work on complex functions, I propose that mathematicians deal with systems of representations and that truth—or what we can prove—depends on available representations in some context where the problem can be solved.     

A Comparison of Rorschach Responses Between Negro and White College Students

Abstract

David, Henry P. and Brengelmann, J.C., (eds.). Perspectives In Personality Research. New York: Springer, Inc., 1960. 370 pp. $7.50. Reviewed by Kenneth R. Wurtz

Gottsegen, Monroe G. and Gottsegen, Gloria B. Professional School Psychology. New York: Grune &; Stratton, 1960, Pp. 292, $7.75. Reviewed by Henry L. Levy

Klopfer, Walter G. The Psychological Report: Use and Communication of Psychological Findings. New York: Grune &; Stratton, 1960. Pp. ix and 146. Reviewed by Dale S. Higbee     

Are You Kynd? Conformity and Deviance Within the Jamband Subculture

I use measures of interpersonal involvement specific to differential association theory to explain variation within the jamband subculture. Specifically, I examine the relationship between the differential association modalities (frequency, intensity, priority, and duration) and the affective meanings (evaluation, potency, and activity) associated with six behaviors that are relevant to that subculture. I expect the modalities to be related positively to the evaluation and potency of four prosocial (what I term “kynd”) behaviors (to barter, to follow a band, to share, to trade music) and negatively to the evaluation and potency of two “unkynd” behaviors (to talk down, to threaten). Using data from self-administered surveys (n = 379), I find that frequency and intensity predict variation in the affective meaning of kynd and unkynd behaviors. However, priority and duration generally do not predict variation in the affective meaning of kynd and unkynd behaviors.     

about the authors

After tobacco and alcohol, marijuana is the most frequently used and abused substance. Its use is particularly prevalent among young adults, aged 18 to 25. This study examines the role strain plays in chronic (as opposed to recreational) marijuana use. Three theoretical perspectives are included in this analysis: General Strain Theory, Social Learning, and Self Control. Data from the 2001 National Household Survey of Drug Abuse are used to determine the relative effects of peers (social learning), strain (general strain theory), and favorable attitudes toward risk-taking (self control). Data is divided into subsamples on the basis of gender. Logistic Regression analysis suggests that males are more likely to be chronic users, and that psychological strain, social learning, and low self control are significant factors associated with chronic use. Furthermore, strain has a stronger effect on chronic use for minority group members, as does a propensity to risky behavior. Social learning has a stronger effect on nonminority group members. All factors have a stronger significant effect on female chronic marijuana use than on male marijuana use (except for the demographic variable education). Policy implications and suggestions for future research are also included.     

NEO PI-R Normative Personality Data That Distinguish U.S. Air Force Female Pilots

Female U.S. Air Force (USAF) pilots represent a unique group of women in a challenging, high-risk, and male-dominated profession. Aside from ability and motivation, personality characteristics are considered to play a key role in succeeding as a military pilot (Paullin, Katz, Bruskiewicz, Houston, & Damos, 2006 Paullin, C., Katz, L., Bruskeiwicz, K. T., Houston, J. and Damos, D. 2006. Review of aviator selection (Tech. Rep. No. 1183) Arlington, VA: United States Army Research Institute for the Behavioral Sciences.  [Google Scholar]). This study evaluated psychological baseline test scores from the NEO Personality Inventory–Revised (NEO PI-R) on the current inventory of rated USAF female (n = 512) and male (n = 9630) pilots in an effort to (a) provide modern normative data on the personality traits of current USAF female pilots, (b) identify personality traits that distinguish female pilots from male pilots and non-pilot females in the civilian normative sample, and (c) assess for meaningful personality differences within female pilots across specific airframes (e.g., fighter/bomber, reconnaissance/surveillance, tanker/transport, and helicopter). The results of the study aim to shed light on objective personality traits and differences and assist clinical psychologists with the interpretation of NEO PI-R psychological test scores when evaluating USAF female pilots. A case vignette is provided to illustrate practical application of study findings.     

The Impact of Induced Stress Upon Selective Attention in Multiple Object Tracking

The ability to filter distracting information and selectively attend to relevant information is critical to effective performance on the battlefield. In addition to the cognitive processing burden imposed upon modern warfighters, the effects of stress upon cognition and action must also be accounted for in evaluating individual warfighting capabilities. The current study examines the relationship between stress and cognition by measuring performance on a multiple object tracking (MOT) task after exposure to stress-inducing photographs. Postexposure performance revealed significant decrements in MOT accuracy relative to a nonstressed control group. Implications are discussed regarding the impact of stress on attentional selection for operational scenarios where it is difficult to distinguish friendly individuals from those with hostile intentions, as well as for the development of technology for command, control, communications (computers), and intelligence (C4I) systems.     

Development and Validation of the Navy Climate Index

Because military work environments have unique contexts, characteristics, and challenges, military policymakers need to understand how personnel perceive the work environment and how this affects individual and organizational outcomes. This study describes the development and testing of the Navy Climate Index (NCI), a new measure comprising items from the Navy-wide Personnel Survey (NPS) that captures eight aspects of psychological climate: advancement/promotion, autonomy/challenge, leadership, communication, fairness, job security, Tempo, and work group. Using NPS data for 3,610 active duty personnel, confirmatory factor analyses support the validity of the NCI. NCI scores were positively associated with job satisfaction, morale, organizational commitment, and retention intentions.