Escala de motivación situacional académica para estudiantes universitarios: desarrollo y análisis psicométricos / The academic motivation scale-situational for college students: development and psychometric analysis

Resumen La Teoría de la Autodeterminación (TAD) reconoce diferentes tipos de motivación, a lo largo de un continuo según el grado de autorregulación del comportamiento, que operan en tres niveles de generalidad: global, contextual y situacional. Este trabajo presenta el proceso de construcción y análisis psicométricos de la Escala de Motivación Situacional Académica desarrollada a partir de las hipótesis de la TAD y del Modelo Jerárquico de la Motivación Intrínseca y Extrínseca (MJMIE). Participaron del estudio 364 estudiantes (62.6 % mujeres, 37.4 % varones) de 18 a 35 años de edad (. = 22.97, DE = 3.00) de diversas carreras de la Universidad de Buenos Aires (Argentina). Cinco jueces expertos analizaron evidencias de validez de contenido para los ítems y un grupo de alumnos aportó elementos para mejorar la validez aparente y la adecuación lingüística. Un análisis factorial exploratorio, a partir del método de Análisis Factorial de Rango Mínimo con rotación Oblimin directo, aisló una estructura trifactorial. La consistencia interna de las escalas se estimó mediante alfas ordinales, cuyos valores fueron en su totalidad adecuados. Las asociaciones significativas entre las escalas apoyaron la hipótesis teórica sobre el continuo propuesto en el modelo. Las correlaciones entre las escalas del instrumento con las de la Escala de Motivación Académica (Stover, de la Iglesia, Rial Boubeta y Fernández Liporace, 2012; Vallerand, Blais, Brierey Pelletier, 1989) fueron significativas al comparar dimensiones equivalentes y disímiles de ambas técnicas. Finalmente, se confeccionaron baremos para estudiantes universitarios locales. Los resultados, limitaciones, implicancias y líneas futuras de investigación se discuten a la luz del modelo de partida.

Abstract Self Determination Theory (Deci & Ryan, 1985a) describes diverse types of motivation, situated throughout a theoretical continuum which comprises a decrease in the regulation of behaviors, from highest to lowest. These are intrinsic motivation, identified regulation, introjected regulation, external regulation, and amotivation. These types, their influential factors, mediators and outcomes, integrate a hierarchic model which entails three levels: global, contextual, and situational (Vallerand, 1997). This paper presents the design and analysis of psychometric features of the Academic Motivation Scale-Situational (AMS-S) aimed at the assessment of motivation towards specific academic activities under specific circumstances. It was developed on the grounds of the Self Determination Theory´s hypotheses as well as the Hierarchic Model of Intrinsic and Extrinsic Motivation (HMIEM) posed by Vallerand (1997). The sample was composed of 364 colleges students (62.6 % females, 37.4 % males) between 18 and 35 years old (. = 22.97, SD = 3.00) with different majors at the University of Buenos Aires (Argentine). Items were written up to represent each type of motivation formulated in the model, according to the question which must be borne in mind while responding to the scale: "Why are you at the faculty right now?" The original pool of items was evaluated by five experts in order to analyze content validity evidences. A further pilot study was performed with a small group of students, aiming at the exam of face validity evidences. The preliminary version of 44 items obtained up to then was analyzed on a standardization sample. Polychoric covariance matrices were employed once the univariate normality hypothesis was not verified for the items. The ordinal nature of data demanded such a treatment as well. The statistical package FACTOR (Lorenzo-Siva & Ferrando, 2013) was used to develop an exploratory factor analysis with minimum rank factor analysis (MRFA) extraction method followed by direct Oblimin rotation (KMO = .887; Bartlett's Sphericity Test: χ² = 4525.6 (df = 351; . < .01). A 3-factor model which explained 68.01 % of the common variance was isolated retaining 27 items (F1 explained 18.1 %, F2, 23.2 %, and F3, 26.8 %). Regarding the items content, the extracted factors were labeled as extrinsic motivation (F1), amotivation (F2), and intrinsic motivation (F3). Additionally, internal consistency of the scales was estimated by means of ordinal alphas, with adequate coefficients in all cases (F1 = .84, F2 = .95, and F3 = .94). In order to test the self-determination continuum hypothesis entailed in the model, each dimension of the scale was correlated with the rest of them. Significant and positive associations (. < .05) were found between the adjacent scales, and negative between the non-adjacent ones, thus endorsing theoretical statements. Correlations between the scales' scores and the similar ones of Academic Motivation Scale (Academic Motivation Scale-EMA in Spanish-Stover et al., 2012; Vallerand et al., 1989) were calculated to analyze convergent validity evidences. Significant though weak statistical associations (. < .05) were found when comparing equivalent and opposite motivational types in both tests. Finally, statistical norms to be employed with local college population were calculated. Summarizing, up to the moment the scale has achieved adequate results in terms of preliminary validity evidences and reliability, supporting its appropriate psychometric quality to be used with local college students. The main weaknesses of the study rely in the sample size, which restricts wider generalizations, as well as the lack of semi-confirmatory factor analyses and psychometric studies on stability of measures, which must be developed in further steps. The analysis of the link between situational, contextual and global measures of motivation is also strongly suggested, taking into account the reciprocal effects among them.

Herbal supplements in the print media: communicating benefits and risks.

BACKGROUND: The rise in use of food supplements based on botanical ingredients (herbal supplements) is depicted as part of a trend empowering consumers to manage their day-to-day health needs, which presupposes access to clear and accurate information to make effective choices. Evidence regarding herbal supplement efficacy is extremely variable so recent regulations eliminating unsubstantiated claims about potential effects leave producers able to provide very little information about their products. Medical practitioners are rarely educated about herbal supplements and most users learn about them via word-of-mouth, allowing dangerous misconceptions to thrive, chief among them the assumption that natural products are inherently safe. Print media is prolific among the information channels still able to freely discuss herbal supplements. METHOD: This study thematically analyses how 76 newspaper/magazine articles from the UK, Romania and Italy portray the potential risks and benefits of herbal supplements. RESULTS: Most articles referenced both risks and benefits and were factually accurate but often lacked context and impartiality. More telling was how the risks and benefits were framed in service of a chosen narrative, the paucity of authoritative information allowing journalists leeway to recontextualise herbal supplements in ways that serviced the goals and values of their specific publications and readerships. CONCLUSION: Providing sufficient information to empower consumers should not be the responsibility of print media, instead an accessible source of objective information is required.

Preparation and characterization of polymorphs of the glucocorticoid deflazacort.

The polymorphism of new and old active pharmaceutical ingredients (APIs) is of great importance due to performance, stability and processability aspects. The objective of this study was to investigate the polymorphism of deflazacort (DEF), a glucocorticoid discovered >40 years ago, since this phenomenon has not been previously investigated for this API. Using different methods for solid form screening, it was determined for the first time that DEF is able to exist as three forms: a crystalline (DEF-1); a hydrated X-ray amorphous (DEF-t-bw) and an anhydrous amorphous phase (DEF-g) obtained from manually grinding DEF-1. The in vitro and in vivo dissolution rates (DRs) of DEF-1 and DEF-t-bw, which were measured using the rotating disk method in water at 37 °C and the pellet implantation technique in rats, respectively, indicated that DEF-t-bw exhibited slightly faster in vitro and in vivo DRs than those of the crystalline form, but the values were not significantly different. In addition, it was determined that DEF-t-bw devitrifies to DEF-1 by the effect of pressure, humidity and heat. It was concluded that DEF is glucorticoid with low tendency to exhibit different crystalline forms and that DEF-t-bw has no advantages over DEF-1 in terms of solubility, DRs and solid-state stability.

Usage of plant food supplements across six European countries: findings from the PlantLIBRA consumer survey.

BACKGROUND: The popularity of botanical products is on the rise in Europe, with consumers using them to complement their diets or to maintain health, and products are taken in many different forms (e.g. teas, juices, herbal medicinal products, plant food supplements (PFS)). However there is a scarcity of data on the usage of such products at European level. OBJECTIVE: To provide an overview of the characteristics and usage patterns of PFS consumers in six European countries. DESIGN: Data on PFS usage were collected in a cross-sectional, retrospective survey of PFS consumers using a bespoke frequency of PFS usage questionnaire. SUBJECTS/SETTING: A total sample of 2359 adult PFS consumers from Finland, Germany, Italy, Romania, Spain and the United Kingdom. DATA ANALYSES: Descriptive analyses were conducted, with all data stratified by gender, age, and country. Absolute frequencies, percentages and 95% confidence intervals are reported. RESULTS: Overall, an estimated 18.8% of screened survey respondents used at least one PFS. Characteristics of PFS consumers included being older, well-educated, never having smoked and self-reporting health status as "good or very good". Across countries, 491 different botanicals were identified in the PFS products used, with Ginkgo biloba (Ginkgo), Oenothera biennis (Evening primrose) and Cynara scolymus (Artichoke) being most frequently reported; the most popular dose forms were capsules and pills/tablets. Most consumers used one product and half of all users took single-botanical products. Some results varied across countries. CONCLUSIONS: The PlantLIBRA consumer survey is unique in reporting on usage patterns of PFS consumers in six European countries. The survey highlights the complexity of measuring the intake of such products, particularly at pan-European level. Incorporating measures of the intake of botanicals in national dietary surveys would provide much-needed data for comprehensive risk and benefit assessments at the European level.

Medical reporting recommendations: a gap between practical and theoretical approach of journalists in Italy.

OBJECTIVE: This survey involved medical reporters to identify degrees of theoretical and actual compliance to recommendations for health reporting. METHODS: The questionnaire was addressed to 450 Italian journalists and obtained a redemption of 23.1%. RESULTS: Major gaps between theoretical agreement and professional practice were: need of scientific background and continuing education; importance of avoiding sensationalism, assessment of scientific protocols and results, reporting of results as absolute risk and numbers needed to treat, attention to the conflict of interest. Two homogeneous profiles emerged. Group 1 includes journalists working in newspapers and shows a large gap between theory and practice. Group 2 includes mainly journalists working in technical medical media and shows a higher consistency between the two settings. DISCUSSION: An improvement in theoretical understanding of medical literature is advisable, but interventions are needed in the working practice in particular in newspapers, a setting where approaches are more difficult.

Improving health communication. Supporting the practice of health communication.

BACKGROUND: Health authorities, hospitals, commercial enterprises, and mass media all deliver health and medical communication in different forms. With such a vast amount of biomedical and clinical information available, any action to ensure the spread of clinically relevant news items is welcome. OBJECTIVES: This paper tries to define a new role for health science librarians in improving medical communication and reporting. METHODS: Literature relating to the health and medical reporting is analysed to identify major difficulties encountered by health communicators. RESULTS: There are two areas where health science librarians can develop new roles in health communication: (i) supporting journalists and health communicators in selecting sources and understanding scientific papers, and (ii) directly translating scientific information into news items, supplying a list of products in this direction (i.e. targeted newsletters, media releases, news items). New skills and competencies needed to cope with the new roles are described in detail in a suggested academic curriculum for health communicators. CONCLUSIONS: A better understanding of the mass media's needs can provide much needed support in the field of health communication.

Epicuro e os tetrapharmakon / Epicure and the tetrapharmakon

Epicuro nos apresenta a filosofia como medicina que trata da turbação da alma. Seu ensinamento ético prescreve quatro remédios para as quatro principais causas da infelicidade humana, as quais são: temer a cólera dos deuses, apavorar-se diante da morte, escolher mal os objetos de desejo e angustiar-se ante o sofrimento(AU)

Epicurus presents the philosophy as the medicine that takes care of the disorder of the soul. Its ethical teaching prescribes four remedies for the four main causes of the misfortune human being: to fear the gods, to be terrified ahead of the death, to choose desire objects badly and to become distressed themselves before the suffering(AU)

Information sources in biomedical science and medical journalism: methodological approaches and assessment.

Throughout the world the public is showing increasing interest in medical and scientific subjects and journalists largely spread this information, with an important impact on knowledge and health. Clearly, therefore, the relationship between the journalist and his sources is delicate: freedom and independence of information depend on the independence and truthfulness of the sources. The new "precision journalism" holds that scientific methods should be applied to journalism, so authoritative sources are a common need for journalists and scientists. We therefore compared the individual classifications and methods of assessing of sources in biomedical science and medical journalism to try to extrapolate scientific methods of evaluation to journalism. In journalism and science terms used to classify sources of information show some similarities, but their meanings are different. In science primary and secondary classes of information, for instance, refer to the levels of processing, but in journalism to the official nature of the source itself. Scientists and journalists must both always consult as many sources as possible and check their authoritativeness, reliability, completeness, up-to-dateness and balance. In journalism, however, there are some important differences and limits: too many sources can sometimes diminish the quality of the information. The sources serve a first filter between the event and the journalist, who is not providing the reader with the fact, but with its projection. Journalists have time constraints and lack the objective criteria for searching, the specific background knowledge, and the expertise to fully assess sources. To assist in understanding the wealth of sources of information in journalism, we have prepared a checklist of items and questions. There are at least four fundamental points that a good journalist, like any scientist, should know: how to find the latest information (the sources), how to assess it (the quality and authoritativeness), how to analyse and filter it (selection), how to deal with too many sources of information, sometimes case biased by conflicting interests (balance). The journalist must, in addition, know how to translate it to render it accessible and useful to the general public (dissemination), and how to use it best.

Science information in the media: an academic approach to improve its intrinsic quality.

The lay audience expresses a clear demand for scientific information, particularly when health and welfare are involved. For most people science is what they learn from the media. The need for good scientific journalism is pressing, to bridge the gap between the slow pace of science and the fast-moving and concise nature of successful mass communication. This academic postgraduate course was established by the Department of Pharmacological Sciences to train mediators to improve the quality of lay scientific dissemination. The programme focuses on teaching a method of selecting, analysing, understanding, mediating and diffusing scientific information to lay people. The course explores the theoretical and practical aspects of methods, techniques and channels of scientific communication. Case studies, practical exercises, and stages complement the theoretical curriculum. The teaching focus is on reducing the asymmetry between scientists and the public. The different backgrounds of students and the spread of topics are major challenges.