The Two Cultures of Pedagogy: Teaching and Learning in the Natural Sciences and the Humanities

. . . there are philosophical and methodological differences among various disciplines that make a difference in the ways disciplines are thought about and, more importantly for present purposes, how they are taught

Escuchando las Voces de Los Estudiantes y Profesores: Un Enfoque Fenomenológico de la Investigación Educativa

Many contemporary researchers claim to use a phenomenological approach but seldom connect their methods to tenets from phenomenological philosophy. We describe a distinctive approach, grounded in the writings of French philosopher Maurice Merleau-Ponty, for conducting educational research. Procedures are outlined for bracketing pre-understandings of a phenomenon, interviewing, and thematizing data with assistance of an interdisciplinary interpretive group. Using our approach, researchers capture the figural aspects of a phenomenon that dominate perception as well as the contextual background that is less visible but integral to understanding it. This phenomenological approach offers educational researchers a radical empiricism, a flexible structure, and a dialogical community of support.Muchos investigadores contemporáneos afirman utilizar un enfoque fenomenológico, pero rara vez conectan sus métodos con los principios de la filosofía fenomenológica. Se describe un enfoque distintivo para la realización de investigación educativa, basado en los escritos del filósofo francés Maurice Merleau-Ponty. Se esbozan procedimientos para acotar el pre-conocimiento de un fenómeno, para entrevistas y para tematizar datos con ayuda de un equipo interdisciplinario interpretativo. Usando nuestro enfoque, los investigadores captan los aspectos figurativos de un fenómeno que domina la percepción, así como el fondo contextual que es menos visible, aunque integral para su comprensión. Este enfoque fenomenológico ofrece a los investigadores educativos un empirismo radical, una estructura flexible, y una comunidad dialógica de apoyo

Foraging in semantic fields : how we search through memory

When searching for concepts in memory-as in the verbal fluency task of naming all the animals one can think of-people appear to explore internal mental representations in much the same way that animals forage in physical space: searching locally within patches of information before transitioning globally between patches. However, the definition of the patches being searched in mental space is not well specified. Do we search by activating explicit predefined categories (e.g., pets) and recall items from within that category (categorical search), or do we activate and recall a connected sequence of individual items without using categorical information, with each item recalled leading to the retrieval of an associated item in a stream (associative search), or both? Using semantic representations in a search of associative memory framework and data from the animal fluency task, we tested competing hypotheses based on associative and categorical search models. Associative, but not categorical, patch transitions took longer to make than position-matched productions, suggesting that categorical transitions were not true transitions. There was also clear evidence of associative search even within categorical patch boundaries. Furthermore, most individuals' behavior was best explained by an associative search model without the addition of categorical information. Thus, our results support a search process that does not use categorical information, but for which patch boundaries shift with each recall and local search is well described by a random walk in semantic space, with switches to new regions of the semantic space when the current region is depleted

Paving the Way to Eureka-Introducing "Dira" as an Experimental Paradigm to Observe the Process of Creative Problem Solving

“Dira” is a novel experimental paradigm to record combinations of behavioral and metacognitive measures for the creative process. This task allows assessing chronological and chronometric aspects of the creative process directly and without a detour through creative products or proxy phenomena. In a study with 124 participants we show that (a) people spend more time attending to selected vs. rejected potential solutions, (b) there is a clear connection between behavioral patterns and self-reported measures, (c) the reported intensity of Eureka experiences is a function of interaction time with potential solutions, and (d) experiences of emerging solutions can happen immediately after engaging with a problem, before participants explore all potential solutions. The conducted study exemplifies how “Dira” can be used as an instrument to narrow down the moment when solutions emerge. We conclude that the “Dira” experiment is paving the way to study the process, as opposed to the product, of creative problem solving

Human matrix metalloproteinases: An ubiquitarian class of enzymes involved in several pathological processes

Human matrix metalloproteinases (MMPs) belong to the M10 family of the MA clan of endopeptidases. They are ubiquitarian enzymes, structurally characterized by an active site where a Zn(2+) atom, coordinated by three histidines, plays the catalytic role, assisted by a glutamic acid as a general base. Various MMPs display different domain composition, which is very important for macromolecular substrates recognition. Substrate specificity is very different among MMPs, being often associated to their cellular compartmentalization and/or cellular type where they are expressed. An extensive review of the different MMPs structural and functional features is integrated with their pathological role in several types of diseases, spanning from cancer to cardiovascular diseases and to neurodegeneration. It emerges a very complex and crucial role played by these enzymes in many physiological and pathological processes

Word Association As A Function Of Semantic Structure.

PhDExperimentsPsychologyUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/185749/2/6305004.pd