Perceptual invariance and the psychophysical law

The psychophysical power law, demonstrated empirically by Stevens, is derivable from two postulates concerning (1) the tendency of perceptual organizations to model the environment and (2) the tendency for perceptual relations to remain constant. The two postulates appear to rule out logarithmic laws of the Fechner type. The theory is extendable to multidimensional perceptions such as those encountered in speech and color vision. The power transformations produced by the sense organs may be of such form that they produce a perceptual space in which subsequent transformations need be only linear.     

Reduced P50 auditory sensory gating response in professional musicians

Evoked potential studies have demonstrated that musicians have the ability to distinguish musical sounds preattentively and automatically at the temporal, spectral, and spatial levels in more detail. It is however not known whether there is a difference in the early processes of auditory data processing of musicians. The most emphasized and studied early process, especially for neuropsychiatric purposes, is sensory gating. The suppression percentage of the midlatency auditory evoked potential P50, and rarely the N100, wave is used for sensory gating studies. Our aim in this study was to investigate whether there was a difference in the auditory P50 and N100 suppression of control subjects who were professional musicians with no psychiatric problems. 34 professional musicians and 19 non-musicians (the control group) were included in this study. P50 and N100 measurements were taken, the suppression percentage of P50 and N100 was calculated and the results compared. Musicians showed significantly less P50 suppression when compared to non-musicians. There was no significant difference for N100 suppression. What the decreased P50 suppression in musicians when compared to non-musician subjects means, when we also take into account that N100 suppression is not decreased, and how it may contribute to the music perception and production processes of these persons is discussed.     

Do changes in threat salience predict the moral content of sermons? The case of Friday Khutbas in Turkey

We analyzed the content of “Friday Khutbas” delivered in Turkish mosques between January 2001 and December 2018 to test the prediction of moral foundations theory (MFT) literature that threat salience would lead to an increased endorsement of binding moral foundations. As societal-level indicators of threat, we examined (a) historical data on the proportion of terrorism-related news published in a Turkish newspaper, (b) the geopolitical risk score of Turkey as measured by Geopolitical Risk Index, and (c) Google Trends data on the search frequency of words “terror”, “terrorism”, or “terrorist”. To measure the endorsement of moral foundations, we built a Turkish Moral Foundations Dictionary and counted the relative frequency of morality-related words in the khutbas delivered in Istanbul, Turkey. Time series analyses showed that risk salience in a certain month was positively related to endorsement of the loyalty/betrayal foundation in that month’s Friday Khutbas. There were mixed results for the other moral foundations.     

Pakistan Federal Shariat Court's Collective Ijtihād on Gender Equality,Women's Rights and the Right to Family Life

This article argues on the basis of recent case law that the judges of the Pakistan Federal Shariat Court (FSC) have asserted their right to ijtihād and have indeed engaged in collective ijtihād. While in some areas, such as freedom of religion, Islamic law has been interpreted rigidly in a non-human-rights-friendly fashion in Pakistan, in some other areas, the flexibility and pluralism of Islamic law has been used to improve gender equality, women's rights and the right to family life. By using its constitutional powers, with its collective ijtihād, the FSC has been tackling the traditionally illiberal interpretation and application of Muslim laws in these areas. Regardless of the methodology and process of this ijtihādic endeavor, the output shows that the FSC has been either modifying the traditional ijtihāds or coming up with totally new ijtihāds to answer contemporary questions faced by Islamic law. The findings of the article once again challenge the views of scholars such as Schacht, Coulson and Chehata, who have argued that, by the fourth/tenth century, the essentials of Islamic legal doctrine were already fully formulated and that the doctrine remained fixed.     

The time course of location-avoidance learning in fear of spiders

Two experiments were designed to study the time course of avoidance learning in spider fearfuls (SFs) under controlled experimental conditions. To achieve this, we employed an immersive virtual environment (IVE): While walking freely through a virtual art museum to search for specific paintings, the participants were exposed to virtual spiders. Unbeknown to the participants, only two of four museum rooms contained spiders, allowing for avoidance learning. Indeed, the more SF the participants were, the faster they learned to avoid the rooms that contained spiders (Experiment. 1), and within the first six trials, high fearfuls already developed a preference for starting their search task in rooms without spiders (Experiment 2). These results illustrate the time course of avoidance learning in SFs, and they speak to the usefulness of IVEs in fundamental anxiety research.     

Social Safeness and Psychological Vulnerability in Turkish Youth: The Mediating Role of Life Satisfaction

The present study examined whether life satisfaction mediated social safeness and psychological vulnerability in Turkish youth. The participants included 261 university students who completed a questionnaire package that included the Turkish versions of the Social Safeness and Pleasure Scale, the Satisfaction with Life Scale, and the Psychological Vulnerability Scale. To test the proposed mediation model, authors employed hierarchical regressions. Furthermore, the authors tested mediation model using the Sobel Z-test and bootstrapping method to examine any indirect effects. Consistent with our hypotheses, the results indicated that there was a positive relationship between social safeness and life satisfaction, and a negative relationship between social safeness and psychological vulnerability. The results of the Sobel Z-test and bootstrapping revealed that life satisfaction significantly, yet partially, mediated the relationship between social safeness and psychological vulnerability. The findings highlight the importance of life satisfaction in enhancing perceptions of social safeness and decreasing psychological vulnerability among Turkish college students.     

The Effect of Listening to the Recitation of the Surah Al-Inshirah on Labor Pain,Anxiety and Comfort in Muslim Women: A Randomized Controlled Study

Journal of Religion and Health - This study aimed to identify whether listening to the recitation of the Surah Al-Inshirah (94th Chapter of the Holy Qur’an) during labor had any effect on...     

Effects of sociocultural factors on social trends in society

We aimed to determine the effect of gender, age, marital status, number of the people in the household, number of children, and regular reading habits on social trends by using the social trends scale for adults. Economically independent 290 adults were selected on a volunteer basis by family practitioners. Our findings indicate that violence avoidance and economic status were correlated to book reading and having children; and gender, regular reading, and having children have impact on economic status. We conclude that promoting regular reading in society, efforts on protecting the institution of marriage, and counseling services that assist toward normalization of the number of children and promoting knowledge and awareness of parenthood would be beneficial to the social trends in society.