Loneliness and mental health in a representative sample of community-dwelling Spanish older adults

Research seems to support loneliness as a risk factor for mental health problems in the elderly. Most studies analyzing the effects of loneliness on older adults' mental health have relied on convenience samples. In this study, the prevalence and predictors of feelings of loneliness were studied in a representative sample of 272 community-dwelling Spanish older adults. The potential of feelings of loneliness to significantly contribute to the explanation of mental health of the elderly was also explored. The percentage of people reporting feelings of loneliness was 23.1%. Being a woman, being older, living alone, having fewer economic resources, having lower perceived health, and being dissatisfied with the frequency of contact with relatives and friends were found to be significant predictors of feelings of loneliness. Loneliness contributed significantly to the explanation of mental health, even when other significant variables were statistically controlled. The results of this study suggest that loneliness is a relevant factor for the analysis and understanding of mental health in the elderly.     

Wayfinding: The effects of large displays and 3-D perception

Large displays and stereopsis have been shown to improve performance in several virtual navigation tasks. In the present research, we sought to determine whether wayfinding could benefit from these factors. Participants were tested in a virtual town. There were three viewing conditions: a desktop, a large screen, and a large screen on which the virtual environment was viewed in three dimensions (3-D) using polarized glasses. Participants explored the town and had to remember the location of several landmarks. Their memory of the layout of the town was tested by asking them to navigate from one landmark to another, taking the shortest route possible. All groups performed equally well in terms of the distance traveled to target locations. From this result, we concluded that large displays and 3-D perception do not significantly contribute to wayfinding. Thus, experimental paradigms and training programs that utilize wayfinding are as valuable when administered on standard desktops as on more sophisticated and costly equipment and do not induce simulator sickness as large displays tend to do.     

MOTIVES STILL DON'T MATTER: REPLY TO PYNES

Abstract This paper continues a dialogue that began with an article by Jeffrey Koperski entitled “Two Bad Ways to Attack Intelligent Design and Two Good Ones,” published in the June 2008 issue of Zygon: Journal of Religion and Science. In a response article, Christopher Pynes argues that ad hominem arguments are sometimes legitimate, especially when critiquing Intelligent Design (2012). We show that Pynes's examples only apply to matters of testimony, not the kinds of arguments found in the best defenses of ID.     

Participation of hippocampal cholinergic system in memory persistence for inhibitory avoidance in rats

Memory persistence needs a new event of consolidation 12h after the acquisition. We investigated the role of the cholinergic activity on the persistence of memory. For this purpose, we performed the treatments 9 or 12h after acquisition and the memory tested 2 or 7 days after inhibitory avoidance (IA) training. Here we report that activity of medial septum, by transitorily inactivating this structure with lidocaine 12h after IA training, is essential for memory persistence at the 7th day, but not for the formation at the 2nd day. We also report that muscarinic and nicotinic cholinergic receptors of CA1 area are engaged on memory persistence. Since scopolamine (mAChRs antagonist) and mecamylamine (nAChRs blocker) infusions, 12h post-training, demonstrated impairment on long term memory (LTM), persistence on the 7th day but no effect on LTM formation was found on the 2nd day in the IA test. The same effects were found with pirenzepine, an M1 antagonist. No effects on the formation and persistence of memory on the 2nd and 7th days were demonstrated after DHβE infusions (nAChRs subtype antagonist α4β2, α3β2). These findings suggest that mAChR and nAChR at the CA1 area, and also MS activation, are required for the persistence of memory.     

Assessment of a sexual coercion prevention program for adolescents

This study's focus is to evaluate a sexual coercion prevention program in adolescents. Using a before-and-after design with both a treatment group (n = 93) and a control group (n = 76), an intervention of seven sessions was completed. Said sessions included such content as conceptualizing sexual freedom, sexual coercion and voluntary consent, analyzing different sexual coercion tactics and the contexts in which they occur, empathy toward the victim, and developing abilities to avoid risky situations. Other risk factors for coercive behavior and sexual victimization are explored as well, such as alcohol use, sexist attitudes and inadequate communication, among others. The intervention's results include a decrease in stereotypical beliefs about the opposite sex and increased empathy toward victims of sexual coercion. These changes were maintained with the passage of time. Also, in the treatment group, a more acute decline was observed in the proportion of young people engaging in sexually coercive behaviors, This article emphasizes the importance, necessity and efficacy of such interventions, and discusses and analyzes possible improvements to the program for its future implementation.