Association between suicidal ideation and burnout: A meta-analysis.

Approximately 700,000 people die by suicide annually worldwide. Researchers have explored a spectrum of experiences that involve stress in academic or work environments and potentially intensify suicidal thoughts or behaviors. However, no meta-analysis has examined the relationship between suicidal ideation (SI) and burnout. This study consisted of a meta-analysis to examine the association between SI and burnout syndrome, utilizing the WoS Core Collection, Scopus, PubMed, PsycINFO, DIALNET, and Google Scholar databases. Twenty-one samples met the study's eligibility criteria for inclusion in the analysis. The results revealed a significant relationship between SI and burnout, with the type of burnout (occupational, academic, and parental) emerging as the most significant moderating variable. Occupational burnout exhibited the lowest correlation, followed by academic and parental burnout. These findings suggest the importance of developing tools to assess SI within the context of the work environment, parenting and academics, and psychoeducational programs for managing stress.

Factores de Riesgo Relacionados con los Trastornos de la Conducta Alimentaria en Adolescentes Españoles: una Revisión Sistemática / Risk Factors and Eating Disorders Among Spanish Adolescents: A Systematic Review

Los trastornos de la conducta alimentaria (TCA) ya suponen un importante problema de salud pública y suelen aparecer durante el periodo de la adolescencia. Pese a ello, no se han encontrado revisiones sistemáticas en la literatura científica sobre los factores de riesgo asociados a estos trastornos en población española adolescente. Por tanto, el objetivo del presente estudio es conocer los factores de riesgo de los TCA en adolescentes españoles. Las fuentes de información utilizadas han sido PubMed, Scopus, Dialnet y Scielo. Tras aplicar los criterios de eligibilidad, 17 artículos científicos fueron incluidos para su posterior análisis. Los resultados principales indican que el IMC (factor biológico), la comorbilidad psicológica (factor psicológico) y la calidad de las dinámicas familiares (factor familiar) constituyen los principales factores de riesgo estudiados. Por otra parte, destaca la notoria carencia de estudios dirigidos a evaluar los factores de riesgo socioculturales ligados a los TCA.(AU)

Eating disorders (ED) have become a public health issue and they often emerge during adolescence. Despite this situation, to our knowledge, there are no scientific systematic reviews of the risk factors associated with ED among Spanish adolescents. Therefore, the aim of this study is to explore the risk factors associated with ED among Spanish adolescents. Databases were PubMed, Scopus, Dialnet, and Scielo. Seventeen articles were included in the analysis after applying the eligibility criteria. Main results show that BMI (biological factor), psychological comorbidity (psychological factor), and the quality of family dynamics (family factor) are the key risk factors in previous literature. Furthermore, the lack of studies addressed to evaluate sociocultural risk factors related to ED is noteworthy.(AU)

Students' Perceptions of University Corruption in a Spanish Public University: A Path Analysis.

Most research on corruption in educational settings has focused on a cross-national and macro-level analysis; however, to our knowledge, few papers have sought to explore individual perceptions that explain corruption in higher education. The present research aimed to disentangle students' predictors of corrupt intention in a Spanish public university. A total of 933 undergraduate, postgraduate, and Ph.D. students filled out an online survey measuring four corruption scenarios: favoritism, bribery, fraud, and embezzlement. Path analysis (PA) revealed that justifiability, risk perception, and perceived prevalence of corruption were significant factors in predicting corrupt intention. Moreover, willingness to report a corrupt act was predicted by corrupt intention, justifiability, and risk perception. Corrupt behavior is a complex phenomenon explained not only by peers' behavior, but also by their individual justifications and perception of risk. Education is not free of corruption, and universities must address this urgent problem in order to avoid future economic, societal, and ethical problems.

Effective Behaviors in Work Teams: Spanish Adaptation of the Individual Behavior Analysis Scale.

There are hardly any instruments to measure teamwork behaviors from an individual approach. This applies both in interprofessional teams or not, and in teams involved in health, social care, and other areas. The Individual Behavior Analysis (IBA) scale measures efficacious behavior in work teams. It is one of the few instruments proposed in the literature to measure personal skills necessary for teamwork. Only a previous exploratory analysis of the scale was informed in another study. This article analyzes its internal structure using different confirmatory factor analyses and its internal consistency, with a sample of 815 employees working for Spanish social organizations in the geriatric field, both private and public. The results of the definitive version adapted to Spanish, referred to as Individual Behavior Analysis -25, indicate a good fit of the model to the data and good reliability. Factor analysis confirmed the existence of two factors: Communication skills and Acceptance, with good internal consistency coefficients. This scale is a useful instrument for assessing, based on the reviewed literature, two of the most important individual skills an efficacious team should have.

Psychological adjustment of Spanish adolescents and their parents during COVID-19 lockdown: A mixed method approach.

Previous literature on the psychological impact of COVID-19 has shown a direct relationship between family conflicts and psychological distress among parents and their children during the domestic lockdown and social isolation; but there are also opportunities to enhance family bonding, encourage collective problem-solving and improve personal relationships. This study aimed to explore psychological adjustment processes of Spanish adolescents and their parents during the first month of lockdown by analyzing their narratives, perceived outcomes, protection and risk factors. A total of 142 people agreed to participate in this study. Of all participants, 61 were adolescents (M = 13.57; SD = 1.74; 57% women) and 81 were parents (M = 46.09; SD = 4.72; 91% mothers). All were Spanish residents and completed an online survey during the domestic lockdown in March 2020. From a qualitative design, methodology followed a mixed approach to analyze data. The results showed three different types of adaptation to lockdown and social isolation in both adolescents and their parents: 1) positive adjustment, 2) moderate adjustment, and 3) maladjustment. Most participants reported a good adjustment and only a 20% of parents and a 16% of adolescents stated that they had not been able to achieve a positive psychological adjustment. There are few significant quantitative differences between adolescents and their parents. The qualitative analysis of data showed that adolescents reported less psychological distress than their parents. The two most important protective factors were social support and keeping busy during lockdown. The most significant risk factors were loss of mobility and social isolation. The conclusions stressed that regarding psychological maladjustment, parents experienced feelings of uncertainty whereas adolescents experienced a kind of mourning process. These findings can be used to design and implement effective intervention measures for mental health and psychological well-being in such a difficult situation as domestic lockdown.

Variables psicológicas asociadas a la corrupción: una revisión sistemática / Psychological variables related to corruption: a systematic review

En la actualidad, la corrupción constituye uno de los principales problemas psicológicos, sociales, económicos y políticos a nivel mundial. El objetivo del presente estudio es analizar las variables psicológicas asociadas a la corrupción a través de una revisión sistemática de las publicaciones entre 2008 y 2018. Tras realizar una búsqueda en las bases de datos Psycinfo, Web of Science, Scopus, Scielo y Dialnet, se encontraron 44 artículos que cumplían con los criterios de selección propuestos. Los grandes núcleos encontrados fueron la ética organizacional, creencias y valores culturales, moral y normas percibidas, y personalidad y variables relacionadas. En general, los resultados apuntan a que variables organizacionales como la percepción de la conducta de sus dirigentes o las estrategias de justificación están relacionadas con la corrupción. Valores culturales meritocráticos y materialistas también han sido ligados a la conducta corrupta, como ocurre en el caso de la percepción de un entorno corrupto y de las normas sociales. En cuanto a la personalidad, rasgos como el narcisismo y la psicopatía se encuentran íntimamente ligados a este fenómeno. Por otra parte, variables como la percepción del poder o el sexo de los participantes han recibido un sustento empírico ambiguo

Nowadays, corruption is one of the most important psychological, social, economic and political issues worldwide. The present paper aims to analyse psychological variables related to corruption through a systematic review of publications from 2008 to 2018. After carrying out a bibliographic search in scientific databases such as Psycinfo, Web of Science and Dialnet, 41 papers were found to match selection criteria. Core topics haven been organizational ethics, cultural beliefs and values, perceived norms and moral, and personality and related variables. Overall, results have shown that organizational variables such as leaders' behaviour and justification strategies are linked to corruption. Meritocratic and materialist values have also been linked to corrupt behaviour, just like perceiving a corrupt environment and social norms. In regard to personality, features such as narcissism and psychopathy are deeply connected with this phenomenon. On the other side, perception of power and gender have a mixed empirical support

Aproximaciones Psicosociales a la Corrupción: Una Revisión Teórica / Psychosocial Approaches to Corruption: A Theoretical Review / Aproximações Psicossociais à Corrupção: uma Revisão Teórica

Resumen La corrupción es una práctica extendida en las sociedades actuales que, a pesar de su relevancia social, se ha estudiado desde postulados mayoritariamente economicistas. Se revisó y analizó de manera crítica este fenómeno desde distintos aportes de la psicología social, tanto en el ámbito anglófono como latinoamericano. En el primer caso, se destaca la in fluencia del comportamiento de los iguales y las normas sociales, las percepciones de riesgo, el papel de las emociones, la ética comportamental y la relación de la corrupción con el poder. Por su parte, los modelos latinoamericanos centran su interés en la influencia de las estructuras supraindividuales, como los valores éticos y las instituciones, en la conducta de los individuos. Se propone que la investigación apunte hacia el estudio de los principales factores psicosociales de manera sistemática y hacia la formulación de marcos teóricos específicos que expliquen este fenómeno social.

Summary Corruption is widespread in current societies; despite its social relevance, it has been studied mostly from economic per spectives. The article reviews and critically analyzes corruption from different social psychology approaches, both in the Anglophone and Latin American settings. Regarding the former, the article highlights the influence of peer behaviors and social norms, risk perceptions, the role of emotions, behavioral ethics and the relationship of corruption to power Regarding the latter, the Latin American models focus on the influence of supra-individual structures such as ethical values and institutions on the individual's conduct. It is proposed that research on this topic look systematically at the main psychosocial factors to formulate specific theoretical frameworks that explain this social phenomenon.

Resumo A corrupção é uma prática estendida nas sociedades atuais que, apesar de sua relevância social, tem sido estudada a partir de princípios predominantemente economicistas. Revisa-se e analisa-se de maneira crítica esse fenômeno a partir de diferentes contribuições da psicologia social, tanto no âmbito anglo-saxão quanto no latino-americano. No primeiro caso, destaca-se a influência do comportamento dos iguais e das normas sociais, as percepções de risco, o papel das emoções, a ética comportamental e a relação da corrupção com o poder. Por sua vez, os modelos latino-americanos focam seu interesse na influência das estruturas supraindividuais, como os valores éticos e as instituições, no compor tamento dos indivíduos. Propomos que a pesquisa aponte ao estudo dos principais fatores psicossociais de maneira sistemática e à formulação de referenciais teóricos específicos que expliquem esse fenômeno social.

Integrating Taxonomic, Functional and Phylogenetic Beta Diversities: Interactive Effects with the Biome and Land Use across Taxa.

The spatial distribution of species, functional traits and phylogenetic relationships at both the regional and local scales provide complementary approaches to study patterns of biodiversity and help to untangle the mechanisms driving community assembly. Few studies have simultaneously considered the taxonomic (TBD), functional (FBD) and phylogenetic (PBD) facets of beta diversity. Here we analyze the associations between TBD, FBD, and PBD with the biome (representing different regional species pools) and land use, and investigate whether TBD, FBD and PBD were correlated. In the study design we considered two widely used indicator taxa (birds and ants) from two contrasting biomes (subtropical forest and grassland) and land uses (tree plantations and cropfields) in the southern Neotropics. Non-metric multidimensional scaling showed that taxonomic, functional and phylogenetic distances were associated to biome and land use; study sites grouped into four groups on the bi-dimensional space (cropfields in forest and grassland, and tree plantations in forest and grassland), and that was consistent across beta diversity facets and taxa. Mantel and PERMANOVA tests showed that TBD, FBD and PBD were positively correlated for both bird and ant assemblages; in general, partial correlations were also significant. Some of the functional traits considered here were conserved along phylogeny. Our results will contribute to the development of sound land use planning and beta diversity conservation.

Is perceptual space inherently non-Euclidean?

It is often assumed that the space we perceive is Euclidean, although this idea has been challenged by many authors. Here we show that, if spatial cues are combined as described by Maximum Likelihood Estimation, Bayesian, or equivalent models, as appears to be the case, then Euclidean geometry cannot describe our perceptual experience. Rather, our perceptual spatial structure would be better described as belonging to an arbitrarily curved Riemannian space.

A neural model for the integration of stereopsis and motion parallax in structure-from-motion.

We introduce a model for the computation of structure-from-motion based on the physiology of visual cortical areas MT and MST. The model assumes that the perception of depth from motion is related to the firing of a subset of MT neurons tuned to both velocity and disparity. The model's MT neurons are connected to each other laterally to form modulatory receptive-field surrounds that are gated by feedback connections from area MST. This allows the building up of a depth map from motion in area MT, even in absence of disparity in the input. Depth maps from motion and from stereo are combined by a weighted average at a final stage. The model's predictions for the interaction between motion and stereo cues agree with previous psychophysical data, both when the cues are consistent with each other or when they are contradictory. In particular, the model shows nonlinearities as a result of early interactions between motion and stereo before their depth maps are averaged. The two cues interact in a way that represents an alternative to the "modified weak fusion" model of depth-cue combination.

A reversed structure-from-motion effect for simultaneously viewed stereo-surfaces.

A spatially flat stimulus is perceived as varying in depth if its velocity structure is consistent with that of a three-dimensional (3D) object. This is structure from motion (SFM). We asked if the converse effect also exists. A motion-from-structure effect would skew an object's perceived velocity structure to make it more consistent with the 3D structure provided by its depth cues. This proposed phenomenon should be opposite in sign from velocity constancy and could potentially interfere with it. Previous tests of velocity constancy compared stimuli presented at different times, not simultaneously. This explains why a reversal of SFM has not been previously reported, as it is expected to appear only for simultaneous presentations. We tested this prediction using random-dot stereograms to define two adjacent moving surfaces separated in stereoscopic depth. We found that subjects did not perceive velocity constancy with either simultaneous or sequential stimulus presentations. For sequential presentations, subjects matched retinal speeds, in agreement with previous work. However, for simultaneous presentations, the nearer surface was seen as moving faster when both surfaces were moving with the same retinal speed, an effect opposite in polarity from velocity constancy and a signature of the motion-from-structure phenomenon.

Motion in depth from interocular velocity differences revealed by differential motion aftereffect.

There are two possible binocular mechanisms for the detection of motion in depth. One is based on disparity changes over time and the other is based on interocular velocity differences. It has previously been shown that disparity changes over time can produce the perception of motion in depth. However, existing psychophysical and physiological data are inconclusive as to whether interocular velocity differences play a role in motion in depth perception. We studied this issue using the motion aftereffect, the illusory motion of static patterns that follows adaptation to real motion. We induced a differential motion aftereffect to the two eyes and then tested for motion in depth in a stationary random-dot pattern seen with both eyes. It has been shown previously that a differential translational motion aftereffect produces a strong perception of motion in depth. We show here that a rotational motion aftereffect inhibits this perception of motion in depth, even though a real rotation induces motion in depth. A non-horizontal translational motion aftereffect did not inhibit motion in depth. Together, our results strongly suggest that (1) pure interocular velocity differences can produce motion in depth, and (2) the illusory changes in position from the motion aftereffect are generated relatively late in the visual hierarchy, after binocular combination.

Seeing motion in depth using inter-ocular velocity differences.

An object moving in depth produces retinal images that change in position over time by different amounts in the two eyes. This allows stereoscopic perception of motion in depth to be based on either one or both of two different visual signals: inter-ocular velocity differences, and binocular disparity change over time. Disparity change over time can produce the perception of motion in depth. However, demonstrating the same for inter-ocular velocity differences has proved elusive because of the difficulty of isolating this cue from disparity change (the inverse can easily be done). No physiological data are available, and existing psychophysical data are inconclusive as to whether inter-ocular velocity differences are used in primate vision. Here, we use motion adaptation to assess the contribution of inter-ocular velocity differences to the perception of motion in depth. If inter-ocular velocity differences contribute to motion in depth, we would expect that discriminability of direction of motion in depth should be improved after adaptation to frontoparallel motion. This is because an inter-ocular velocity difference is a comparison between two monocular frontoparallel motion signals, and because frontoparallel speed discrimination improves after motion adaptation. We show that adapting to frontoparallel motion does improve both frontoparallel speed discrimination and motion-in-depth direction discrimination. No improvement would be expected if only disparity change over time contributes to motion in depth. Furthermore, we found that frontoparallel motion adaptation diminishes discrimination of both speed and direction of motion in depth in dynamic random dot stereograms, in which changing disparity is the only cue available. The results provide strong evidence that inter-ocular velocity differences contribute to the perception of motion in depth and thus that the human visual system contains mechanisms for detecting differences in velocity between the two eyes' retinal images.

Computing relief structure from motion with a distributed velocity and disparity representation.

Recent psychophysical experiments suggest that humans can recover only relief structure from motion (SFM); i.e., an object's 3D shape can only be determined up to a stretching transformation along the line of sight. Here we propose a physiologically plausible model for the computation of relief SFM, which is also applicable to the related problem of motion parallax. We assume that the perception of depth from motion is related to the firing of a subset of MT neurons tuned to both velocity and disparity. The model MT neurons are connected to each other laterally to form modulatory interactions. The overall connectivity is such that when a zero-disparity velocity pattern is fed into the system, the most responsive neurons are not those tuned to zero disparity, but instead are those having preferred disparities consistent with the relief structure of the velocity pattern. The model computes the correct relief structure under a wide range of parameters and can also reproduce the SFM illusions involving coaxial cylinders. It is consistent with the psychophysical observation that subjects with stereo impairment are also deficient in perceiving motion parallax, and with the physiological data that the responses of direction- and disparity-tuned MT cells covary with the perceived surface order of bistable SFM stimuli.

Fracción excretada de sodio en el recién nacido de pretérmino con creatinina sérica normal / Fractional sodium excretion in preterm neonates with normal plasma creatinine

El propósito de este trabajo prospectivo fue determinar el valor normal de la fracción excretada de sodio (FENa) en el recién nacido (RN) de pretérmino, debido a que en la literatura existen controversias en sus resultados, lo que la ha hecho poco útil en este tipo de pacientes. Por ello se estudiaron 110 RN de pretérmino de enero a noviembre de 1993; 70 fueron masculinos y 40 femeninos, sin datos clínicos de insuficiencia renal y con creatinina sérica normal. La FENa varió de 0.01 a 4 por ciento (este último dato se dio únicamente en un sólo paciente, en los restantes no pasó de 2.98 por ciento), con un promedio de 0.5ñ0.62 por ciento, una mediana de 0.28 por ciento y una moda de 0.12 por ciento. La edad gestacional varió de 28 a 36 semanas con un promedio de 34ñ1.8 semanas. El peso varió de 725 a 2,475 g con un promedio de 1,834ñ370 g, con una moda de 1,750 g. No hubo diferencia estadísticamente significativa de la FENa, sodio urinario, sodio sérico, creatinina urinaria, cratinina sérica entre los pacientes con edades comprendidas entre la primera, segunda, tercera y cuarta semanas de vida extrauterina. Tampoco hubo diferencia significativa entre la FENa de pacientes de 30 semanas o menos y la FENa de los mayores de esa edad gestacional. Se concluye que la FENa es un parámetro útil para evaluar la función renal en el RN de pretérmino de 28 a 36 semanas de edad gestacional pudiéndose tomar como valores hasta 3 por ciento