Food choices are a key determinant of dietary intake, with brain regions, such as the mesolimbic and prefrontal cortex maturing at differential rates into adulthood. More needs to be understood about developmental changes in healthy and unhealthy food perceptions and preference. We investigated how food perceptions and preference vary as a function of age and how food attributes impact age-related changes. One hundred thirty-nine participants completed computerized tasks to rate high-calorie and low-calorie food cues for taste, health, and liking, followed (...) by 100 binary food choices based on each participant’s ratings. Dietary self-control was considered successful when the healthier food was chosen. Self-control success ratio was the proportion of success trials over total number of choices. Beta-weights for health and taste were calculated as each attribute’s influence on food preference. Adiposity measurements included BMI z-score and waist-to-height ratio. High-calorie foods were rated more tasty and less healthy with increasing age. Older participants liked high-calorie foods more, and β-taste was associated with age. Significant age-by-WHtR interactions were observed for health and taste ratings of high-calorie foods, β-taste, and marginally for preference of high-calorie foods. Stratifying by WHtR, we found age-related increases in taste and preference ratings of high-calorie foods in the high WHtR group alone. In contrast, age-related decreases in health ratings of high-calorie foods were significant in the low WHtR group alone. Age and β-taste were significantly associated in the high WHtR group and only marginally significant with low WHtR. Although participants rated low-calorie foods as less tasty and less healthy with increasing age, there was no association between age and preference for low-calorie foods. Participants made faster food choices with increasing age regardless of WHtR, with a significant age-by-WHtR interaction on reaction time. There were no age-related effects in self-control success ratio and β-health. These results suggest that individual differences in age and central adiposity play an important role in preference for high-calorie foods, and a higher importance of food tastiness in food choice may contribute to greater preference for high-calorie foods with increasing age. (shrink)

A prefrontal control system that is less mature than the limbic reward system in adolescence is thought to impede self-regulatory abilities, which could contribute to poor dietary choices and obesity. We, therefore, aimed to examine whether structural morphology of the prefrontal cortex and the amygdala are associated with dietary decisions and obesity in children and adolescents. Seventy-one individuals between the ages of 8–22 years participated in this study; each participant completed a computer-based food choice task and a T1- and T2-weighted (...) structural brain scans. Two indices of obesity were assessed, including age- and sex-specific body mass index and waist-to-height ratio. The behavioral task included rating 60 food stimuli for tastiness, healthiness, and liking. Based on each participant’s self-ratings, 100 binary food choices were then made utilizing a computer mouse. Dietary “self-control” was calculated as the proportion of trials where the individual chose the healthier food item over the total number of trials. Cortical thickness and amygdala subnuclei volumes were quantified using FreeSurfer 6.0 and CIT168 atlas, respectively. We found that WHtR was negatively associated with the thickness of bilateral superior frontal, left superior temporal, right insula, and right inferior temporal regions. We also found WHtR to be positively associated with the volume of the central nucleus region of the amygdala, after adjusting for the hemisphere, age, sex, and intracranial volumes. A similar data pattern was observed when BMIz was used. Moreover, we found that across all participants, thinner right superior frontal cortex and larger left CEN volumes predicted lower dietary self-control. These results suggest that differential development of the PFC and amygdala relate to obesity and dietary self-control. Further longitudinal studies are merited to determine causal relationships among altered PFC to amygdala neural circuitry, dietary self-control, and obesity. (shrink)

En la Universidad Médica “Carlos J. Finlay”, se realiza una intervención educativa con el objetivo de valorar la concepción y aplicación de un programa para un curso de preparación de metodólogos en correspondencia con sus funciones en condiciones de universalización de las Ciencias Médicas de Camagüey, en el periodo de septiembre de 2005 a junio de 2007. Se emplean diferentes métodos investigativos: los teóricos, así como la técnica de discusión grupal, permitió diseñar el programa del curso para la preparación de (...) metodólogos en condiciones de universalización y los empíricos, la obtención de algunos datos de interés acerca de los metodólogos que reciben el curso y sus valoraciones en relación con el mismo. Se constata que la preparación pedagógica y experiencia en el desempeño es insuficiente para asumir el rol de metodólogo y valoran de muy importantes los contenidos desarrollados, los métodos y formas organizativas concebidas, por lo que se concluye que el programa del curso cumple con las expectativas del metodólogo al estar diseñado teniendo en cuenta las funciones que estos desempeñan y sus necesidades sentidas A study was carried out about the intervention in education developed to increase teacher's methodological preparation under their new functions due to the fresh conditions of learning within the community applied to medicine training and education in Camagüey. It was carried out in the period of September 2005 to June 2007. Different research methods were used: the theoretical ones and the technique for group discussion help to design the course syllabus and the assessment for those teachers that received the course. It was verified that the methodological preparation and performance experience are insufficient to play their role; but they value as very important the contents, the methods and the organization of the course. The authors conclude that the course meets the expectations of training, because it was designed keeping in mind the teachers' functions and their necessities. (shrink)

Como parte de la investigación doctoral en curso, este escrito presenta una lectura filosófica de las visiones analíticas de la contemporaneidad de José Saramago en su obra La caverna y de Zygmunt Bauman a partir de las obras del denominado “período líquido”, teniendo como orientación metodológica la hermenéutica gadameriana. Se pretende dilucidar el carácter particular de algunos de los fenómenos culturales, sociales, emocionales y comportamentales que constituyen la experiencia contemporánea del mundo (consumismo, debilitamiento de los lazos sociales y afectivos, desregulación (...) de las instituciones que sustentan la sociedad occidental, hedonismo, relativismo moral y religioso, etc). Dichos fenómenos son abordados desde un metáfora óptica –la de Saramago– y una metáfora física –la de Bauman–. Todos ellos constituyen una encrucijada con respecto al sentido atribuible a dichas dinámicas, las múltiples lecturas que se hacen de las mismas y los retos analíticos, comprensivos e intelectuales que implica el debate en torno a la contemporaneidad (¿posmodernidad? ¿tardomodernidad? ¿hipermodernidad?). (shrink)

Prenatal genetic diagnosis with new high-performance technologies such as genomic array adds great complexity to the ethical dilemmas that already exist in current medicine. The main objective of this study was to carry out an analysis and bioethical reflections centred on the outcome associated with the use of the genetic array technique in 185 pregnancies at the Hospital Universitario y Politécnico La Fe (Valencia, Spain). It is an observational, descriptive and cross-sectional study during the years 2014 to 2017, inclusive. We (...) analyse the results and the follow-up of the 185 cases in which this prenatal genetic study was carried out by array technique. Of the 185 prenatal genetic studies carried out, 165 showed no copy number variants (normal result) and in the 20 remaining pregnancies (10.81%), a dose change was detected. Abortion was carried out in 11 cases with pathological and/or probably pathological abnormalities. Of the 165 cases in which no dose variant was detected, an abortion was carried out in 49 cases, which represents 29.7%. The introduction of new genomic analysis techniques to invasive prenatal diagnosis highlights the ethical problems that arise above all in the interpretation of genetic variants detected and genetic counselling, while emphasising the need for correct informed consent and it adds, if possible, more controversy to a subject with great bioethical substance such as abortion. (shrink)

The employment of mythological language and imagery by an Epicurean poet - an adherent of a system not only materialist, but overtly hostile to myth and poetry - is highly paradoxical. This apparent contradiction has often been ascribed to a conflict in the poet between reason and intellect, or to a desire to enliven his philosophical material with mythological digressions. This book attempts to provide a more positive assessment of Lucretius' aims and methodology by considering the poet's attitude to myth, (...) and the role which it plays in the De Rerum Natura, against the background of earlier and contemporary views. The author suggests that Lucretius was not only aware of the tension between his two roles as philosopher and poet, but attempted to resolve it by developing his own, Epicurean poetic, together with a bold and innovative theory of the origins and meaning of myth. (shrink)

Understanding what it means toconsent is of considerable importance sincesignificant moral issues depend on how this actis defined. For instance, determining whetherconsent has occurred is the deciding factor insexual assault cases; its proper occurrence isa necessary condition for federally fundedhuman subject research. Even though mosttheorists recognize the legal and moralimportance of consent, there is still littleagreement concerning how consent should bedefined, or whether different domains involvingconsent demand context-specific definitions.Understanding what it means to consent isfurther complicated by the fact that currentlegal (...) conceptions are not necessarily groundedin argument; they typically depend on appealsto authority and precedent. The purpose ofthis paper is to use speech act theory toprovide a theoretically grounded conception ofconsent; such a conception can aid in the justresolution of legal and moral disputes thathinge on whether an act of consent occurred. (shrink)

Jackendoff's Foundations of Language: Brain, Meaning, Grammar, Evolution attempts to reconnect generative linguistics to the rest of cognitive science. However, by minimally acknowledging decades of work in cognitive linguistics, treating dynamical systems approaches somewhat dismissively, and clinging to certain fundamental dogma while revising others, he clearly risks satisfying no one by almost pleasing everyone.

Andrés de Guevara y Basoazábal (1748-1801), jesuita novohispano guanajuatense, escribió las Institutionum elementarium philosophiae, donde su autor ofrece un currículo deseable para la juventud mexicana que incluya la ciencia moderna empírica, la política virtuosa y la sabiduría humana. A través de una traducción comparativa del latín al español del proemio de la citada obra, este artículo pretende: 1) contextualizar al autor novohispano, 2) mostrar la recepción de la ciencia moderna desde los elementos aristotélicos de los que Guevara dispuso, y 3) (...) mostrar que la modernidad y la tradición aristotélica se enriquecieron mutuamente; y lo que debía de reformarse era la escolástica anquilosada. Se concluye que a través del proemio De vicissitundinibus de Guevara se evidencia la recepción mexicana de la modernidad emanada de una mentalidad aristotélica. (shrink)

Assuming that linguistic representation has been studied only by linguists using grammaticality judgments, Branigan & Pickering present structural priming as a novel alternative. We show that their assumptions are incorrect for cognitive-functional linguistics, exposing converging perspectives on form/meaning pairings between generativists and cognitive-functional linguists that we hope will spark the cross-disciplinary discussion necessary to produce a cognitively plausible model of linguistic representation.

The aim of this study was to analyze the explanatory level of the variables advertising influence, verbal messages, social models and social situations as regards body dissatisfaction, weight worry, and bodily discomfort. The study was conducted in a convenience sample of 206 Mexican women with an average age of 22.12 years. Structural equation modeling was used to analyze the direct and indirect effects of the independent variables on the dependent ones in three hypothetical models proposed. In the case of the (...) model proposed for body dissatisfaction, it was found that the set of variables had 79% of variance explained and showed adequate goodness-of-fit indices. The model for weight worry had 62% of variance explained and an acceptable goodness of fit. Finally, the model for bodily discomfort had 72% of variance explained and showed adequate goodness of fit. It is concluded that social influences have a significant impact on body image. Verbal messages had the strongest impact on the variables studied. (shrink)

Since the mid-20th century, the study of Self-Regulated Learning has aimed to identify the distinctive characteristics that enable individuals to acquire new knowledge and skills under their control. The theory of Internal Self-Regulation vs. External-Regulation in Learning has postulated that a large number of self-regulatory variables are mediated by regulated/non-regulated or dysregulated features of the context. After signing their informed consent, a total of 616 university students completed validated instruments of SRL vs. ERL, behavioral regulation, regulatory teaching, and metacognitive study (...) control strategies. Using an ex-post facto design and correlation, regression, structural equation model and mediation analyses, the present research aimed to establish multicausal predictive relationships among the analyzed variables. Results indicated positive predictive effects between the external regulation variables on the self-regulation variables in learning [regulation /non-regulation /dysregulation ]; as well as positive predictive effects between SRL on SRB, RT and metacognitive SRS. Additionally, external regulation not only predicted but mediated numerous relations among the variables studied. Other findings and important considerations for future research in the field of self-regulation are discussed. (shrink)

The overwhelming importance of Lucretius' De Rerum Natura for the interpretation of the Georgics is recognized by almost all critics. As W. Y. Sellar expressed it over a hundred years ago, ‘the influence, direct and indirect, exercised by Lucretius on the thought, composition and even the diction of the Georgics was perhaps stronger than that ever exercised, before or since, by one poet on the work of another’. Richard Thomas' recent commentary attempts to play down the extent of this influence, (...) contending that ‘the debt of Virgil to Lucretius in the Georgics is predominantly formal’, and manifests itself chiefly on a verbal level, whereby the poet seeks ‘to create a didactic appearance for his poem’. The aim of this paper is to reassert the pervasive importance of Lucretian ideas, as well as Lucretian language, throughout the poem, and particularly in Virgil's presentation of the physical and metaphysical relationships between man and beast. (shrink)

Pragmatic comparative effectiveness randomized controlled trials evaluate the effectiveness of one interventions under real-world clinical conditions. The results of ceRCTs are often directly generalizable to everyday clinical practice, providing information critical to decision-making by patients, clinicians, and healthcare policymakers. The PRECIS-2 framework identifies nine domains that serve to score a trial on a continuum between very explanatory to very pragmatic. According to the framework, pragmatic trials may have one or more of the following features: there are fewer eligibility criteria for (...) participants, in an... (shrink)

Method as Identity considers how social identity shapes methodological standpoints. With a refreshing hip hop sensibility, Miller and Driscoll reorient the contemporary academic study of religion toward recognition of the costs and benefits of manufacturing “critical” distance from our objects of study.

The majority of people show persistent poor performance in reasoning about “stock-flow problems” in the laboratory. An important example is the failure to understand the relationship between the “stock” of CO2 in the atmosphere, the “inflow” via anthropogenic CO2 emissions, and the “outflow” via natural CO2 absorption. This study addresses potential causes of reasoning failures in the CO2 accumulation problem and reports two experiments involving a simple re-framing of the task as managing an analogous financial budget. In Experiment 1 a (...) financial version of the task that required participants to think in terms of controlling debt demonstrated significant improvements compared to a standard CO2 accumulation problem. Experiment 2, in which participants were invited to think about managing savings, suggested that this improvement was fortuitous and coincidental rather than due to a fundamental change in understanding the stock-flow relationships. The role of graphical information in aiding or abetting stock-flow reasoning was also explored in both experiments, with the results suggesting that graphs do not always assist understanding. The potential for leveraging the kind of reasoning exhibited in such tasks in an effort to change people's willingness to reduce CO2 emissions is briefly discussed. (shrink)

The progression of research and scholarly inquiry does not occur in isolation and is wholly dependent on accurate reporting of methods and results, and successful replication of prior work. Without mechanisms to correct the literature, much time and money is wasted on research based on a crumbling foundation. These guidelines serve to outline the respective responsibilities of researchers, institutions, agencies, and publishers or editors in maintaining the integrity of the research record. Delineating these complementary roles and proposing solutions for common (...) barriers provide a foundation for best practices. (shrink)

Cumulative evidence suggests that, for children and adolescents, peer relatedness is an essential component of their overall sense of belonging, and correlates with subjective well-being and school-based well-being. However, it remains unclear what the underlying mechanism explaining these relationships is. Therefore, this study examines whether there is a reciprocal effect between school satisfaction and overall life satisfaction, and whether the effect of peer relatedness on life satisfaction is mediated by school satisfaction. A non-recursive model with instrumental variables was tested with (...) econometric and structural equation modeling methodologies, using a cross-sectional sample of n = 5,619 Chilean early adolescents, aged 10, 11, and 12. Results were highly consistent across methods and supported the hypotheses. First, the findings confirmed a significant reciprocal influence between school satisfaction and overall life satisfaction, with a greater impact from school to life satisfaction. Second, the effect of peer relatedness on overall life satisfaction was fully mediated by school satisfaction. The study further suggests the importance of considering reciprocal effects among domain-specific satisfaction and overall life satisfaction and illustrates the application of non-recursive models for this purpose. (shrink)

Este ensayo examina un experimento mental clásico de John Searle en filosofía de la mente, cuyo argumento ha sido descalificado por Dennett y Hofstadter como una bomba de intuiciones no confiable. Lo que se defiende aquí es que este experimento mental tiene un sesgo cartesiano, pero ello no obsta a que no sea confiable. En efecto, la característica principal de la Pieza China es depender de un agente cognitivo consciente que realiza el experimento, y en particular, de quien no se (...) puede prescindir para saber si ocurre o no entendimiento lingüístico luego del procesamiento de símbolos. En efecto, el punto de vista de la 1ª persona de quien lleva a cabo el experimento es, al igual que en otras instancias, lo que permite el testeo de una hipótesis sobre la naturaleza de lo mental. (shrink)

Según la versión estándar del juego de la imitación, la determinación del sexo de los participantes no desempeña ningún papel en el testeo de la inteligencia de máquina. Desafortunadamente, tal simplificación soslaya la teoría de la mente que fundamenta dicho juego. Teniendo en consideración este problema, en este ensayo argumento en contra de la simplificación del Test de Turing. En efecto, tal como sostengo, la determinación del sexo de los participantes no debe obviarse: la mente de una mujer y su (...) inteligencia son imitables y no dependen de realización física específica. Esto ocurre porque el funcionalismo de Turing supone un vínculo entre imitación, engaño y aprendizaje, tres claves para que el proyecto de la Inteligencia Artificial tenga éxito. (shrink)