Evidence against continuous variables driving numerical discrimination in infancy

Over the past decades, abundant evidence has amassed that demonstrates infants’ sensitivity to changes in number. Nonetheless, a prevalent view is that infants are more sensitive to continuous properties of stimulus arrays such as surface area and contour length than they are to numerosity. Very little research, however, has directly addressed infants’ sensitivity to contour. Here we used a change detection paradigm to assess infants’ acuity for the cumulative contour length of an array when the array’s surface area and number were held constant. Seven-month-old infants detected a threefold change in contour length but failed to detect a twofold change. These results, in conjunction with previously published data on numerosity discrimination using the same experimental paradigm, suggest that infants are not more sensitive to changes in contour length compared to changes in numerosity. Consequently, these findings undermine the claim that attention towards contour length is the primary driver of numerical discrimination in infancy

A Deductive, Participative, And Iterative Process: A Case Study In Curricular Review

This paper focuses on a deductive, participative, and iterative process for curricular revision at a public Midwestern university in the Merchandising and Fashion Design program. A systematic, nonlinear, organized process is presented and details specific components used in curricular review. The guiding framework for the redesign was that of Garner and Buckley (1988). That is, feedback was solicited and incorporated from educators, students, and employers. In each of the two-year process, the program was viewed as a whole, with input from faculty at every step, and also viewed from a micro-perspective by examining each course individually. The process included peer review, with each faculty member encouraged to review not only their own courses, but those of their colleagues as well. At times, the curricular review process seemed overwhelming with the significant amount of data and resource constraints to consider. The systematic process presented assisted in managing multiple considerations and constituents involved in the curriculum review. Besides maintaining a relevant and current curriculum, the process provided a multitude of benefits for the department. Significant changes were made to the curriculum, but more honest relationships were reestablished and an increased understanding among colleagues was an unexpected benefit of the lengthy, but necessary, examination of the program and resulting curricular changes in the department

Ideal models and the reality: from Cofradia to Mayordomia in the Valles Centrales of Oaxaca, Mexico

The Civil-Religious hierarchy, or fiesta complex, which is found in indigenous communities in Mesoamerica and the Andean countries, has been central to anthropological studies in the area lavish expenditure of the religious cargo holders, the mayordomos, on fiesta celebrations, which has attracted most theories, as, ethnocentrically and materialistically, it is held to be both irrational and because, as the administrative complex of the villages, it is the pivot of village life. However, it is the lavish expenditure of the religious cargo holders, the mayordomos, on fiesta celebrations, which has attracted most theories, as, ethnocentrically and materialistically, it is held to be both irrational and uneconomic. However both views, I would argue, ignore the religious motivation of those who serve the saints. It is not uncommon for theorists to make backward projections into the colonial era in an attempt to account for the fiesta system as it exists now, and one model that has had some influence is the extractive one of Marvin Harris, which contends that, its ritual system having been proved to be almost wholly 16th century in origin, the complex was imposed by the Church in the early colonial era in order to draw off resources from the Indians - a role which has been sustained ever since. This neo - Marxist contention is both supremely materialistic and simplistic. However, it is the fact that this and other historical projections seemed to lack rigorous research and analysis, which led me to undertake a diachronic study of the colonial forerunners of the mayordomías, the cofradías, and the reason for their erection. I also wished to ascertain how far the civil-religious hierarchies of the colonial era resembled the ideal model of the modern complex; that is, a series of ranked civil and religious cargos held by all at the lowest level, and then undertaken alternatively, with heavy expenditure in time and economic resources, by those with sufficient economic means. Further to this, I wished to explore the transformation from colonial cofradía to modern mayordomía. Thus, the thesis divides into three parts, and, although anthropological in concept, is based principally upon historical research, and so is an ethno-historical study. The area chosen for this research was the Valles Centrales de Oaxaca, in the State and See of Oaxaca, which was a Dominican province from 1529 and whose doctrinas were not fully secularised until the 1760s. Unfortunately, the Dominican archive as such no longer exists, having been largely destroyed, although a part has been widely dispersed. In view of this, I have had recourse to the Dominican histories of the colonial era, which are based both upon their archives and the personal experiences of the authors, as well as the 16th century chronicles of the Franciscans - a rich source for descriptions of the earliest cofradías, their processions, and the reasons for their erection. These I have used in marshalling my arguments vis-á-vis the introduction of the cofradías, whilst detailed analysis of the role of the later cofradías and cargo holders has been based upon specific parochial archives in the Valleys. I shall introduce this thesis with a description of mayordomía in the Valleys today. I shall then discuss the civil, religious and social structures of the valley before and at the time of the Spanish Conquest in an attempt to isolate those aspects of fiesta celebrations, which are preCortesian in origin. This I shall base largely upon archaeological evidence. I shall then demonstrate that cofradía was a tool for attracting and maintaining religious converts by its several functions of ensuring a sumptuous cult, proselytising the faithful, and giving them succour. I shall isolate certain cofradías, which had the specific function of proselytisation, which I shall designate "cofradías proselitistas", and consider the austere and exemplary lives of those who introduced them. However, I shall also show that the Conquest and its aftermath was the occasion of much trauma for the indigenous peoples, in a way which was not always, perhaps, fully appreciated even by those who had their best interests at heart. Next I shall discuss the economic dilemma of the 16th century Church, which, lacking substantial tithes, could not increase the small ratio of priests to converts, nor properly train sufficient secular priests to secularise the parishes. I shall consider the post-Tridentine attempts to do this, and also to ensure that the seculars had reasonable stipends so that the scandal of their dependence upon their parishioners for sustenance, and their neglect of their duties for commercial concerns could be avoided. I shall also demonstrate that this economic crisis placed an economic burden upon the Indians, which Church legislation endeavoured to lessen, and that, whilst the existence of the cofradías increased the income of the priests through payments for Masses, and church furnishings, the Church enacted laws which limited excessive expenditure on these, as well as others preventing the erection of cofradías with illthought out statutes, and the exploitation of the people by unscrupulous priests. Thus, I am arguing that the Church was aware of the failings of those most in contact with the Indians, and, at least, endeavoured to mitigate them. Although much of this material is specific to Oaxaca, it is, of necessity, set in the wider context of the Church in New Spain. The second part of the thesis, based principally upon archival material from the Archivo General del Estado de Oaxaca, the Archivo General de la Nación in Mexico City, and the Archivos Parroquiales de Zaachila, in the Valley of Zimatlán, and Etla, in the Valle of Etla, is concerned with the hierarchies at village level. In this I shall discuss the traumatic background against which the 17th and 18th inhabitants of the Valleys lived, particularly as a result of the pro-secularisation policies of the Church and suggest that the conflict between the Bishops of Oaxaca and the Dominicans was a major cause of the Zapotecs retaining much of their prehispanic religious costumbres (traditions) and beliefs. I shall then consider the roles of the various officers in both the civil and religious hierarchies in the Indian towns, and demonstrate that only members of the nobility were eligible for such cargos. I shall suggest the possibility that the cargo of mayordomo of a cofradía was sufficiently prestigious for some men merely to serve this. I shall also demonstrate, from the Zaachilan material, that there was apparently no hierarchy of saints to serve, and that the ideal model of an achievement ladder of alternatively served prestigious civil and religious cargos did not exist in the colonial era. Further to this, I shall consider other variables which negate the ideal model: specifically the existence of female "mayordomos" throughout the colonial period and the early post-Independence decades; mayordomos who served the same saint for two, and even as many as six or more consecutive years; and the intervention of the priest in cofradía affairs. An analysis of the Libros de Cofradía will show how the mayordomos managed or mismanaged the Bienes de Cofradía, whilst the Libros de Cordillera of the 18th century Bishops of Oaxaca will show how they attempted to influence and change every sphere of Zapotec life. The Libros de Cofradía are the official record of the mayordomos' stewardship of the cofradías, but the Libros de Cordillera of the 18th century and 19th Bishops of Oaxaca give some idea of the celebration of fiesta, and the strictures upon it. They and the Libros de Cofradía suggest that whilst the colonial mayordomos might have incurred high expenses in financing the unofficial activities integral to fiesta celebrations, which are pre-Hispanic survivals, the existence of a lavish cult in a secularised doctrina, such as Etla, resulted in their being drawn into heavy debts in their attempts to sustain this by their management of the Bienes de Cofradía. The books also demonstrate that the ecclesiastical and Liberal post-Independence strictures upon cofradía echoed those of the colonial Church. But it appears that the Liberal policies at the time of La Reforma, during the presidency of the Sierra Zapotec Benito Juárez, were responsible for the transformation of the role of the mayordomo from that of steward of a cofradía's wealth, to the arduous one of financial responsibility for the equally religious mayordomía celebrations. In the third and concluding part of the thesis, I shall speculate upon the evolving nature of fiesta celebrations in the Valleys of Oaxaca from the preCortesian era and argue that the mayordomos continued to celebrate them as a complex of syncretic religious activities and, under threat from the Bishops for so doing, determinedly included the prehispanic survivals they so abhorred in order to reinforce and uphold pueblo and Zapotec identity

The Acuity and Manipulability of the ANS Have Separable Influences on Preschoolers’ Symbolic Math Achievement

The approximate number system (ANS) is widely considered to be a foundation for the acquisition of uniquely human symbolic numerical capabilities. However, the mechanism by which the ANS may support symbolic number representations and mathematical thought remains poorly understood. In the present study, we investigated two pathways by which the ANS may influence early math abilities: variability in the acuity of the ANS representations, and children’s’ ability to manipulate ANS representations. We assessed the relation between 4-year-old children’s performance on a non-symbolic numerical comparison task, a non-symbolic approximate addition task, and a standardized symbolic math assessment. Our results indicate that ANS acuity and ANS manipulability each contribute unique variance to preschooler’s early math achievement, and this result holds after controlling for both IQ and executive functions. These findings suggest that there are multiple routes by which the ANS influences math achievement. Therefore, interventions that target both the precision and manipulability of the ANS may prove to be more beneficial for improving symbolic math skills compared to interventions that target only one of these factors

Testing methods to mitigate Caribbean yellow-band disease on Orbicella faveolata

Outbreaks of coral diseases continue to reduce global coral populations. In the Caribbean, yellow band is a severe and wide-spread disease that commonly affects corals of the Orbicella spp. complex, significantly impeding coral reproduction, and hindering the natural recovery of Orbicella spp. populations. Caribbean yellow-band disease (CYBD) lesions may be severe, and often result in the complete loss of coral tissue. The slow spread of CYBD, however, provides an opportunity to test methods to mitigate the disease. Here we report the results of in situ experiments, conducted within Buck Island Reef National Monument in St. Croix, USVI, to test the effectiveness of three techniques to minimize disease impact on Orbicella faveolata: (1) shading, (2) aspirating, and (3) chiseling a “firebreak” to isolate the lesion. Neither shading nor aspirating the diseased tissue significantly reduced CYBD tissue loss. However, chiseling reduced the rate and amount of tissue lost by 31%. While 30–40% of the chiseled lesions appeared to be free of disease signs 12–16 months after treatment, success significantly and steadily declined over 23 months, indicating a possible lack of long-term viability of the technique. The results of this study demonstrate that creating a “firebreak” between diseased and healthy- appearing tissue slows the spread of the disease and may prolong the life of O. faveolata colonies. The firebreak method yielded the best results of all the techniques tested, and also required the least amount of effort and resources. However, we do not recommend that this treatment alone be used for long-term disease mitigation. Rather, we propose that modifications of this and other treatment options be sought. The results also highlight the need for extended monitoring of CYBD after any treatment, due to the slow but variable rate and pattern of tissue loss in this disease

Testing methods to mitigate Caribbean yellow-band disease on Orbicella faveolata

Outbreaks of coral diseases continue to reduce global coral populations. In the Caribbean, yellow band is a severe and wide-spread disease that commonly affects corals of the Orbicella spp. complex, significantly impeding coral reproduction, and hindering the natural recovery of Orbicella spp. populations. Caribbean yellow-band disease (CYBD) lesions may be severe, and often result in the complete loss of coral tissue. The slow spread of CYBD, however, provides an opportunity to test methods to mitigate the disease. Here we report the results of in situ experiments, conducted within Buck Island Reef National Monument in St. Croix, USVI, to test the effectiveness of three techniques to minimize disease impact on Orbicella faveolata: (1) shading, (2) aspirating, and (3) chiseling a “firebreak” to isolate the lesion. Neither shading nor aspirating the diseased tissue significantly reduced CYBD tissue loss. However, chiseling reduced the rate and amount of tissue lost by 31%. While 30–40% of the chiseled lesions appeared to be free of disease signs 12–16 months after treatment, success significantly and steadily declined over 23 months, indicating a possible lack of long-term viability of the technique. The results of this study demonstrate that creating a “firebreak” between diseased and healthy-appearing tissue slows the spread of the disease and may prolong the life of O. faveolata colonies. The firebreak method yielded the best results of all the techniques tested, and also required the least amount of effort and resources. However, we do not recommend that this treatment alone be used for long-term disease mitigation. Rather, we propose that modifications of this and other treatment options be sought. The results also highlight the need for extended monitoring of CYBD after any treatment, due to the slow but variable rate and pattern of tissue loss in this disease

Café virtual Ribla 91 - violencias, resistencias, resiliencias

Recurso en línea (Vídeo):Plataforma Tiankis (San Salvador, El Salvador, C.A.),2023Duración: 58.24Idioma: EspañolEnlace En Línea: Http://Bit.Ly/Cafevirtualribla9

From 'aisle' to 'labile': a hierarchical NART scale revealed by Mokken scaling

Decline in cognitive ability is a core diagnostic criterion for dementia. Knowing the extent of decline requires a baseline score from which change can be reckoned. In the absence of prior cognitive ability scores, vocabulary-based cognitive tests are used to estimate premorbid cognitive ability. It is important that such tests are short yet informative, to maximize information and practicability. The National Adult Reading Test (NART) is commonly used to estimate premorbid intelligence. People are asked to pronounce 50 words ranging from easy to difficult but whether its words conform to a hierarchy is unknown. Five hundred eighty-seven healthy community-dwelling older people with known age 11 IQ scores completed the NART as part of the Lothian Birth Cohort 1936 study. Mokken analysis was used to explore item responses for unidimensional, ordinal, and hierarchical scales. A strong hierarchical scale (“mini-NART”) of 23 of the 50 items was identified. These items are invariantly ordered across all ability levels. The validity of the interpretation of this briefer scale’s score as an estimate of premorbid ability was examined using the actual age 11 IQ score. The mini-NART accounted for a similar amount of the variance in age 11 IQ as the full NART (NART = 46.5%, mini-NART = 44.8%). The mini-NART is proposed as a useful short clinical tool to estimate prior cognitive ability. The mini-NART has clinical relevance, comprising highly discriminatory, invariantly ordered items allowing for sensitive measurement, and adaptive testing, reducing test administration time, and patient stress