Increased perceived stress is associated with blunted hedonic capacity: potential implications for depression research

Preclinical studies suggest that stress exerts depressogenic effects by impairing hedonic capacity; in humans, however, the precise mechanisms linking stress and depression are largely unknown. As an initial step towards better understanding the association between stress and anhedonia, the present study tested, in two independent samples, whether individuals reporting elevated stress exhibit decreased hedonic capacity. The Perceived Stress Scale (PSS) measured the degree to which participants appraised their daily life as unpredictable, uncontrollable, and overwhelming. Hedonic capacity was objectively assessed using a signal-detection task based on a differential reinforcement schedule. Decreased reward responsiveness (i.e., the participants' propensity to modulate behavior as a function of reward) was used as an operational measure of hedonic capacity. In both Study 1 (n=88) and Study 2 (n=80), participants with high PSS scores displayed blunted reward responsiveness and reported elevated anhedonic symptoms. Additionally, PSS scores predicted reduced reward responsiveness even after controlling for general distress and anxiety symptoms. These findings are consistent with preclinical data highlighting links between stress and anhedonia, and offer promising insights into potential mechanisms linking stress to depression.     

The effects of movement direction and hemispace on estimates of distance traveled

BACKGROUND/HYPOTHESIS: The degree of attention directed to a stimulus and the presence of anisometric representations can alter the perception of the magnitude of a stimulus. We wanted to learn if normal right-handed subjects' estimates of distance traveled are influenced by the right-left direction or hemispace of movements. METHODS: We had blindfolded participants estimate the distance their arm was moved in a rightward or leftward direction, in right and left hemispace. Since we wanted subjects to estimate the distance traveled rather than compute the distance between the start and finish points, the subjects' arms were passively moved in sinusoidal trajectories at a constant speed. RESULTS: Subjects estimated leftward movements as longer than rightward movements, but there was no effect of hemispace. COMMENTS/CONCLUSIONS: People often attend more to novel than routine conditions and therefore participants might have overestimated the distance associated with leftward versus rightward movement because right-handed people more frequently move their right hand in a rightward direction and learn to read and write using rightward movements. Thus, leftward movements might be more novel and more attended than rightward movements and this enhanced directional attention might have influenced estimates of magnitude (distance).     

Influences of Work-Family Interface on Job and Life Satisfaction

Research investigating the relationship between family and work domains, according to a reductionist approach, has traditionally focused on the negative aspects of the work-family relationship. However, over the past 15 years a number of studies have also focused on the positive aspects of family and work relationships and on the interactions between the work-family interface and outcomes such as job and life satisfaction. These research studies have made it possible to capture different facets of the relationship between family and working life, and to clarify the specific nature of these interactions. In the present study, we tested a model that included positive and negative interactions between work and family as predictors of job and life satisfaction. We also examined the role of some of the potential moderators (work engagement, organizational and family support) of these relationships, using a sample of 427 Italian employees working in public administration. In our analysis, we first tested the factorial structure of the work-family interface measure (Kinnunen et al. Scandinavian Journal of Psychology, 47, 149–162 2006). Factor analysis confirmed a four-factor model: negative work-to-family interface, negative family-to-work interface, positive work-to-family interface, and positive family-to-work interface. Secondly, we analyzed the relationship between the work-family interface, job satisfaction and life satisfaction. Path analysis showed that the factors involved in the work-family interface influenced directly and indirectly life satisfaction, job satisfaction and work engagement. This analysis also showed that work engagement had a direct strong effect on job satisfaction and a direct weaker effect on life satisfaction. This pattern of findings is consistent with a causal sequence in which the work-family interface (WIF) and family-work interface (FIW) can increase or reduce a satisfaction-specific domain. Our results highlight the importance of using a theoretical and empirical model that integrates and focuses on both the positive and negative aspects of the work-family relationship. Moreover, this pattern demonstrates the potential consequences of this influence on employees’ working life and general well-being.     

The Logics of Strict-Tolerant Logic

Adding a transparent truth predicate to a language completely governed by classical logic is not possible. The trouble, as is well-known, comes from paradoxes such as the Liar and Curry. Recently, Cobreros, Egré, Ripley and van Rooij have put forward an approach based on a non-transitive notion of consequence which is suitable to deal with semantic paradoxes while having a transparent truth predicate together with classical logic. Nevertheless, there are some interesting issues concerning the set of metainferences validated by this logic. In this paper, we show that this logic, once it is adequately understood, is weaker than classical logic. Moreover, the logic is in a way similar to the paraconsistent logic LP.     

Unus Mundus: A New Approach to The Reading of Complexity

In the last decades of the twentieth century, there was quite a change in the scientific approaches as far as humankind and nature are concerned. The recent discoveries of quantum physics with the phenomenon of entanglement and of the neurosciences with the holographic theory of mind have furthermore amplified the epistemological perspectives of complexity, introducing completely new and amazing hypotheses concerning the human­–universe relationship. Therefore, on the basis of these quantum specifications by Bohm, we can postulate the hypothesis that if all the matter of the universe is also entangled, living matter and the cognition entangled to it, which are at the basis of the network of life, do not represent but a giant living hologram provided with specific information prerogative which, generally speaking, can flow by means of the continuous interaction of the corporeal matter of humankind together with the wider network of the whole. This interaction of humankind with the universe is studied by Ecobiopsychology, which qualifies in the “panorama” of complexity like a new discipline, which relates the informative codes of the living world and their specific languages (the ecological aspect) to the analogous languages of the human body, which sediments in itself the phylogenesis of the world (the biological aspect), to then recover the relationship between the “world” and the human “bios” in its psychological and cultural aspects expressed in myths, in the history of religions, and in the collective images of humanity (the psychological aspects). Ecobiopsychology, referring to the most recent developments of complexity, considers humankind as an organized totality provided with a meaning that can be justified only if contextualized in the relationships with its body, its mind, and its social and cultural dynamics without any of these aspects being privileged the human being, the human unit is to be seen as a node within a broader network. The human­-unity is provided with a specific organization, schema, structure, and process, the outcome of that manifestation of strength and information flowing in a continuous dynamism. The ecobiopsychological model focusing on the constant relationship between the unconscious and the body, in referring to the information “physicality” of the archetype and in evaluating the importance of the synchronicity as a rule able to bind among themselves the information of existential events together with the categories of the different forms of the universe, by means of the vital analogies and the symbols, proposes a holistic Weltanschauung of humankind. This is similar to the most modern conceptions of quantum physics.     

TENI: A comprehensive battery for cognitive assessment based on games and technology

TENI (Test de Evaluación Neuropsicológica Infantil) is an instrument developed to assess cognitive abilities in children between 3 and 9 years of age. It is based on a model that incorporates games and technology as tools to improve the assessment of children’s capacities. The test was standardized with two Chilean samples of 524 and 82 children living in urban zones. Evidence of reliability and validity based on current standards is presented. Data show good levels of reliability for all subtests. Some evidence of validity in terms of content, test structure, and association with other variables is presented. This instrument represents a novel approach and a new frontier in cognitive assessment. Further studies with clinical, rural, and cross-cultural populations are required.     

EFFECTS OF ACADEMIC DEGREE AND DISCIPLINE ON RELIGIOUS AND EVOLUTIONARY VIEWS IN CHILE AND COLOMBIA

Relationships between degree/area of academic formation and religious and Darwinian views are controversial. This study aimed to compare the religious beliefs and acceptance of Darwinian evolution between two contrasting South American scientific communities (Chile and Colombia), accounting for different degrees and areas of academic formation. In 2018, 115 last year bachelor students (surveyed as freshmen in 2014 for a previous study) from Chile, and 283 first/last year bachelor students, graduate students, and professors from Colombia, all belonging to biology, chemistry, or physics, were surveyed. Chilean students/faculty were significantly more agnostic/atheist, more accepting of Darwinian evolution, and less creationist than their Colombian counterparts. Academic degree and area differently affected these views in both countries, as only in Chile there was a clear tendency among biologists and physicists with higher degrees to hold less religious and creationist views. Marked differences between the history, socioeconomic contexts, and especially in high school and university curricula of both countries might explain these results.     

Motion as a Concept,an Insufficient Element in the Kantian Philosophy

Axiomathes - This article examines the Kantian ideas on motion in his work Metaphysical Foundations of Natural Science. In that essay, Kant holds that motion as a concept—from its connotation...