Gratitude and depressive symptoms: The role of positive reframing and positive emotion

Eight studies (N=2,973) tested the theory that gratitude is related to fewer depressive symptoms through positive reframing and positive emotion. Study 1 found a direct path between gratitude and depressive symptoms. Studies 2–5 demonstrated that positive reframing mediated the relationship between gratitude and depressive symptoms. Studies 6–7 showed that positive emotion mediated the relationship between gratitude and depressive symptoms. Study 8 found that positive reframing and positive emotion simultaneously mediated the relationship between gratitude and depressive symptoms. In sum, these eight studies demonstrate that gratitude is related to fewer depressive symptoms, with positive reframing and positive emotion serving as mechanisms that account for this relationship.     

Interpreting Thomas Kuhn as a Response-Dependence Theorist

Abstract

Thomas Kuhn is the most famous historian and philosopher of science of the last century. He is also among the most controversial. Since Kuhn’s death, his corpus has been interpreted, systematized, and defended. Here I add to this endeavor in a novel way by arguing that Kuhn can be interpreted as a global response-dependence theorist. He can be understood as connecting all concepts and terms in an a priori manner to responses of suitably situated subjects to objects in the world. Further, I claim, this interpretation is useful for three reasons. First, it allows us to systematize and defend Kuhn’s views. We can therefore better appreciate him as a thinker in his own right. Second, it deepens our understanding of both the uniqueness of Kuhn’s views and the continuity of those views with those of others. We can therefore better appreciate his place in history. And third, as I explain in the paper, my interpretation affords us the only example of an ethnocentric global response-dependence theory. We can therefore better appreciate the versatility of response-dependence itself.     

The durability of beneficial health effects associated with expressive writing

Abstract

This study examined the durability of benefits associated with expressive writing. Sixty-eight college undergraduates completed measures of physical and psychological health at the beginning of their first year and were then randomized to either an expressive writing or a control writing condition. Changes in physical health, psychological health (i.e., depression, stress, and anxiety), and academic performance were assessed two, four, and six months later. Findings indicated that participants assigned to the expressive writing condition reported less depression symptom severity at the two-month follow-up assessment relative to participants assigned to the control condition. However, these symptom reductions were not observed at any of the subsequent follow-up assessments. No significant changes were reported for physical health complaints, stress symptoms, anxiety symptoms, or academic performance. These findings suggest that, among first-year college students, expressive writing may provide some short-term relief for certain symptoms.     

Religious orientation and attitudes toward money: relationships with narcissism and the influence of gender

Psychologists, psychotherapists, social workers, counselors, and other people involved in the mental-health fields are increasingly working with American Indians who practice various religious ceremonies and life ways foreign to Western-oriented epistemologies and ontologies. The American Indian Church and its sacramental use of peyote is one such example. This paper provides a brief history of the American Indian Church and its use of peyote, as well as the American Indian beliefs behind the use of peyote and the psychopharmacological data concerning peyote. It is shown that the sacramental use of peyote by the American Indian Church members is not a deviant hallucinogenic disorder and that in fact it provides a means of achieving and maintaining health, balance, respect, and a sense of community among participants and their social relations.     

Improving executive function using transcranial infrared laser stimulation

Transcranial infrared laser stimulation is a new non‐invasive form of low‐level light therapy that may have a wide range of neuropsychological applications. It entails using low‐power and high‐energy‐density infrared light from lasers to increase metabolic energy. Preclinical work showed that this intervention can increase cortical metabolic energy, thereby improving frontal cortex‐based memory function in rats. Barrett and Gonzalez‐Lima (2013, Neuroscience, 230, 13) discovered that transcranial laser stimulation can enhance sustained attention and short‐term memory in humans. We extend this line of work to executive function. Specifically, we ask whether transcranial laser stimulation enhances performance in the Wisconsin Card Sorting Task that is considered the gold standard of executive function and is compromised in normal ageing and a number of neuropsychological disorders. We used a laser of a specific wavelength (1,064 nm) that photostimulates cytochrome oxidase – the enzyme catalysing oxygen consumption for metabolic energy production. Increased cytochrome oxidase activity is considered the primary mechanism of action of this intervention. Participants who received laser treatment made fewer errors and showed improved set‐shifting ability relative to placebo controls. These results suggest that transcranial laser stimulation improves executive function and may have exciting potential for treating or preventing deficits resulting from neuropsychological disorders or normal ageing.     

Depressive symptoms predict inflexibly high levels of experiential avoidance in response to daily negative affect: a daily diary study

Experiential avoidance (EA) is an emotion-regulation strategy used to control or avoid unpleasant internal experiences. Despite the important role of avoidance in depressive disorders, there is relatively little research directly examining the role of EA in the development and maintenance of depression, and most of this research relies on measurement of EA as a global and stable personality trait. In this study we sought to extend the research on EA and depression by using a daily diary design and multilevel analysis to examine how the daily relationship between EA and negative affect (NA) varies as a function of baseline depressive symptoms. In order to achieve this goal we created a new state measure of EA assessing several avoidant behaviors. The findings revealed that participants with more depressive symptoms used more daily EA overall. Additionally, the difference in daily EA between those with higher versus lower depressive symptoms was greater on days when participants experienced less NA. This moderation effect was found only concurrently whereas one-day lagged analysis failed to reveal this effect. These findings provide preliminary support for the hypothesis that depression is associated with an inflexibly high level of avoidant emotion regulation.     

Megachiropteran bats (Pteropus) utilize human referential stimuli to locate hidden food

Spontaneous point-following behavior has been considered an indicator of advanced social cognition unique to humans. Recently, it has been suggested that a close evolutionary relationship with humans could result in similar social skills in domesticated species. An alternative view is that the mechanism is not genetic domestication alone but instead a combination of phylogenetic and ontogenetic variables. Here we test the necessity of phylogenetic domestication by investigating the point-following behavior of a captive population of nondomesticated megachiropteran bats (Pteropus pumilus, Pteropus rodricensis, Pteropus conspicillatus, Pteropus vampyrus). Three of five subjects were highly successful in following an unfamiliar human's point to a target location, providing the first empirical evidence of cross-species social referencing in bats. The three successful bats were all born in captivity and socialized to humans early in life, whereas unsuccessful bats were wild-born individuals. This study provides evidence that referential point following is not restricted to domesticated animals and indicates that early experience may be important. Megachiropteran bats may prove to be a useful model for studying social behaviors.