Psychoneuroimmunology and male infertility: A possible link between stress,coping and male immunological infertility

Abstract

This current study investigated a link between stress and coping with some male infertility problems via psychoneuroimmunological theories. The study was carried out on 77 males who came to a fertility clinic for sperm diagnosis. Appraisal and coping with stress reaction to negative life events and to infertility were related to non-sperm cells within the seminal plasma. Those men who had felt strained from external events and from problems of infertility, and had used emotional escape coping strategies, were more prone to have an immunosuppressed reaction, indicated by bacteria within their plasma. Those using task focused control strategies were more prone to have an immunostimulatory reaction, indicated by white blood cells, including in some cases, sperm destroying phagocytes suggesting a possible auto-immunity reaction. When the analyses were done separately on patients with known male fertility problems in comparison with those with unexplained infertility, the two opposing psychoneuroimmunological processes became more pronounced.     

Exact solution of the one-dimensional Potts bridge model with competing interactions

Abstract

The exact solution of the q-state Potts bridge model with competing ferromagnetic and antiferromagnetic interactions is obtained and corresponding regular and critical behaviour studied.     

Scientific empathy,American buddhism,and the ethnography of religion

This paper examines some of the current ideas and methods that have problematised the study of religion within a globalised community. Religion and culture cannot be considered bounded entities, to be described as unchangeable. However, their constant process of change is not something new. It becomes new due to writing patterns and contemporary ideas on the relevance of religion or the creativity of culture. By analysing some discussions on possession cults, the paper suggests that ritual and performance constitute the moments when culture and religion are mediated. It is through ritual that religious practices are adapted, and it is in a ritual performance where culture is contested and challenged. Religion becomes ‘confused culture’, that once again is re‐organised and made orderly by reflection on ritual practices. Finally, the paper suggests that the agenda for an anthropology of religion for this new century is two‐fold. Firstly, to try to become more conversant with ever changing localised practices of ritual, and secondly, to try to converse about those practices with other practitioners and scholars from different fields and in different fields.     

Can't See the Forest for the Trees? The Effect of Media Multitasking on Cognitive Processing Style

Media multitasking represents an important aspect of the recent evolution in media consumption habits. While some experimental research exists, it has primarily focused on the detrimental effects of multitasking on task performance. We go a step further by examining the impact of media multitasking on information processing style. Study I demonstrates that media multitasking, compared to sequential media consumption, leads to a more local perceptual processing style. Furthermore, the frequency of media switching predicts the level of perceptual processing. Study II extends these findings by showing that media multitasking also affects conceptual processing style. Specifically, media multitasking leads to lower-level (or more concrete) construal of behaviors in a subsequent task. It further shows that conceptual rather than visual switching between media drives the observed differences in conceptual processing. These findings suggest that, as a growing phenomenon, media multitasking behavior may substantially alter the way media viewers process media content.     

Factorial and Diagnostic Validity of the Beck Depression Inventory-II (BDI-II) in Croatian Primary Health Care

The aim of this study was to examine the factorial and diagnostic validity of the Beck Depression Inventory-Second Edition (BDI-II) in Croatian primary health care. Data were collected using a medical outpatient sample (N = 314). Reliability measured by internal consistency proved to be high. While the Velicer MAP Test showed that extraction of only one factor is satisfactory, confirmatory factor analysis indicated the best fit for a 3-factor structure model consisting of cognitive, affective and somatic dimensions. Receiver operating characteristics (ROC) analysis demonstrated the BDI-II to have a satisfactory diagnostic validity in differentiating between healthy and depressed individuals in this setting. The area under the curve (AUC), sensitivity and specificity were high with an optimal cut-off score of 15/16. The implications of these findings are discussed regarding the use of the BDI-II as a screening instrument in primary health care settings.     

Blood flow velocity changes in anterior cerebral arteries during cognitive tasks performance

Objective

Transcranial Doppler sonography (TCD) enables monitoring of blood flow velocities (BFVs) in basal cerebral arteries during different cognitive tasks performance with great temporal resolution. So far, BFVs changes during mental activity were monitored primarily in middle cerebral arteries (MCAs) and little is known about these changes in anterior cerebral arteries (ACAs).

Aim

To determine the effect of different cognitive tasks performance on BFV changes and hemispheric dominance in ACAs and to assess the most suitable activation test for monitoring of BFV changes in ACAs.

Methods

Fourteen right-handed, healthy subjects aged 20–26 were included in the study. BFVs in both ACAs were recorded simultaneously during performance of cognitive tasks designed to activate frontal lobes: phonemic verbal fluency test (pVFT), Stroop tests and Trail Making Tests (TMTs).

Results

A statistically significant BFV increase was recorded in both ACAs during performance of all cognitive tasks. Statistically significant right ACA dominance was found during performance of pVFT and TMTB. The most significant BFV increase was obtained during performance of TMTB.

Conclusion

Our result addressed cognitive tests with great activation potential for monitoring of ACAs that might be used in distinguishing of healthy individuals and patients with neurovascular or neurodegenerative diseases.     

The anxiety buffering function of close relationships: mortality salience effects on the readiness to compromise mate selection standards

This research examines the utility of a terror management approach to understanding the motivations and emotional consequences of compromise in mate selection. One hundred and sixty‐eight undergraduates completed a self‐esteem scale and a scale tapping ideal mate characteristics, and were then assigned either to a mortality salience, physical pain salience, or neutral condition. Half of the participants rated their readiness to compromise ideal mate standards and the remaining half completed a neutral scale. Then, participants completed a scale tapping their emotional state. Mortality salience led participants to significantly compromise their mate requirements. This effect seemed to be most pronounced among high self‐esteem participants who also experienced the greatest amount of guilt when compromising under mortality salient conditions. Low self‐esteem participants who compromised under mortality salient conditions reacted with higher levels of shame. The results are discussed in terms of the anxiety buffering functions of close relationships. Copyright © 2002 John Wiley & Sons, Ltd.     

Test–Retest Reliability of Ratings of Job Performance Dimensions in Managers

This article examines the test–retest reliability of supervisory ratings for several dimensions of job performance and for overall job performance. We found that the test–retest reliability of overall job performance is .79 (SD = .08), a value very close to the one found by Viswesvaran, Ones and Schmidt (1996), and that the average test–retest reliability for specific dimensions of job performance is .57 (SD = .07). We also found that some dimensions of job performance appear to be easier to rate than others. We suggest some implications of these findings for research and practice of personnel selection.