From the time of its birth, Popper 's theory of falsifiability has been fiercely criticized from various viewpoints. In the author's view, however, those various criticisms all have the same root in their assumption that a falsification must be certain and conclusive. As the theory of falsifiability has never had such an assumption, it is the source of misunderstanding. By discarding it, we can reply to every criticism and thereby clarify the role of falsifiability in our search for better knowledge; (...) that is, it makes our attitude open to a yet unknown world. (shrink)

From the time of its birth, Popper’s theory of falsifiability has been fiercely criticized from various viewpoints. In the author’s view, however, those various criticisms all have the same root in their assumption that a falsification must be certain and conclusive. As the theory of falsifiability has never had such an assumption, it is the source of misunderstanding. By discarding it, we can reply to every criticism and thereby clarify the role of falsifiability in our search for better knowledge; that (...) is, it makes our attitude open to a yet unknown world. Key Words: Popper • falsifiability • openness • inconclusive falsification • second Popper legend. (shrink)

Background Previous reports have described that simple cognitive training using reading aloud and solving simple arithmetic calculations, so-called “learning therapy”, can improve executive functions and processing speed in the older adults. Nevertheless, it is not well-known whether learning therapy improve a wide range of cognitive functions or not. We investigated the beneficial effects of learning therapy on various cognitive functions in healthy older adults. Methods We used a single-blinded intervention with two groups (learning therapy group: LT and waiting list control (...) group: WL). Sixty-four elderly were randomly assigned to LT or WL. In LT, participants performed reading Japanese aloud and solving simple calculations training tasks for 6 months. WL did not participate in the intervention. We measured several cognitive functions before and after 6 months intervention periods. Results Compared to WL, results revealed that LT improved inhibition performance in executive functions (Stroop: LT (Mean = 3.88) vs. WL (Mean = 1.22), adjusted p =.013 and reverse Stroop LT (Mean = 3.22) vs. WL (Mean = 1.59), adjusted p =.015), verbal episodic memory (logical memory: LT (Mean = 4.59) vs. WL (Mean = 2.47), adjusted p =.015), focus attention(D-CAT: LT (Mean = 2.09) vs. WL (Mean = -0.59), adjusted p =.010) and processing speed compared to the waiting list control group (digit symbol coding: LT (Mean = 5.00) vs. WL (Mean = 1.13), adjusted p =.015 and symbol search: LT (Mean = 3.47) vs. WL (Mean = 1.81), adjusted p =.014). Discussion This RCT can showed the benefit of learning therapy on inhibition of executive functions, verbal episodic memory, focus attention, and processing speed in healthy elderly people. Our results were discussed under overlapping hypothesis. Trial registration “This trial was registered in The University Hospital Medical Information Network Clinical Trials Registry (UMIN000006998).”. (shrink)

Involuntary eye movement during gaze fixation, referred to as fixational eye movement, consists of two types of components: a Brownian motion like component called drifts-tremor and a ballistic component called microsaccade with a mean saccadic amplitude of about 0.3° and a mean inter-MS interval of about 0.5 s. During GZ fixation in healthy people in an eccentric position, typically with an eccentricity more than 30°, eyes exhibit oscillatory movements alternating between centripetal drift and centrifugal saccade with a mean saccadic amplitude (...) of about 1° and a period in the range of 0.5–1.0 s, which has been known as the physiological gaze-evoked nystagmus. Here, we designed a simple experimental paradigm of GZ fixation on a target shifted horizontally from the front-facing position with fewer eccentricities. We found a clear tendency of centripetal DRT and centrifugal MS as in GEN, but with more stochasticity and with slower drift velocity compared to GEN, even during FEM at GZ positions with small eccentricities. Our results showed that the target shift-dependent balance between DRT and MS achieves the GZ bounded around each of the given targets. In other words, GZ relaxes slowly with the centripetal DRT toward the front-facing position during inter-MS intervals, as if there always exists a quasi-stable equilibrium posture in the front-facing position, and MS actions pull GZ intermittently back to the target position in the opposite direction to DRT. (shrink)

A robot that is easy to teach not only has to be able to adapt to humans but also has to be easily adaptable to. In order to develop a robot with mutual adaptation ability, we believe that it will be beneficial to first observe the mutual adaptation behaviors that occur in human–human communication. In this paper, we propose a human–human WOZ (Wizard-of-Oz) experiment setting that can help us to observe and understand how the mutual adaptation procedure occurs between human (...) beings in nonverbal communication. By analyzing the experimental results, we obtained three important findings: alignment-based action, symbol-emergent learning, and environmental learning. (shrink)

Poor sleep quality negatively affects memory performance, and working memory in particular. We investigated sleep habits related to sleep quality including sleep duration, daytime nap duration, nap frequency, and dream content recall frequency (DCRF). Declarative working memory can be subdivided into verbal working memory (VWM) and visuospatial working memory (VSWM). We hypothesized that sleep habits would have different effects on VWM and VSWM. To our knowledge, our study is the first to investigate differences between VWM and VSWM related to daytime (...) nap duration, nap frequency, and DCRF. Furthermore, we tested the hypothesis that the effects of duration and frequency of daytime naps and DCRF on VWM and VSWM differed according to sex. We assessed 779 healthy right-handed individuals (434 males and 345 females; mean age: 20.7 ± 1.8 years) using a digit span forward and backward VWM task, a forward and backward VSWM task, and sleep habits scales. A correlation analysis was used to test the relationships between VWM capacity (VWMC) and VSWM capacity (VSWMC) scores and sleep duration, nap duration, nap frequency, and DCRF. Furthermore, multiple regression analyses were conducted to identify factors associated with VWMC and VSWMC scores and to identify sex-related differences. We found significant positive correlations between VSWMC and nap duration and DCRF, and between VWMC and sleep duration in all subjects. Furthermore, we found that working memory capacity (WMC) was positively correlated with nap duration in males and with sleep duration in females, and DCRF was positively correlated with VSWMC in females. Our finding of sex-related differences in the effects of sleep habits on WMC has not been reported previously. The associations between WMC and sleep habits differed according to sex because of differences in the underlying neural correlates of VWM and VSWM, and effectiveness of the sleep habits in males and females. (shrink)

El problema de la causalidad universal está planteado y resuelto por los filósofos neoplatónicos de la Antigüedad Tardía a partir del principio de acuerdo con el cual todo ente extrae el propio origen a partir de un principio superior y trascendente: el Uno. Sin embargo, sobre esta línea unitaria, t..

Será que uma vida humana, por mais realizada que seja, é destituída de sentido a menos que exista uma vida depois da morte? Ou haverá sentido - o único tipo real e humano de sentido - numa vida dedicada à procura cuidadosa do que tem genuinamente valor? Serão os valores relativos de acordo com as culturas em que estamos inseridos ou conforme as opiniões pessoais? O que queremos compreender em filosofia quando discutimos as relações entre a arte e a moralidade? (...) Estas são algumas das perguntas a que este livro procura responder. O objetivo não é persuadir o leitor, mas antes ajudá-lo a fazer o seu próprio percurso reflexivo para que sejam seus todos os sonhos do mundo. (shrink)

Ortega y Gasset pidió al filósofo la cortesía de la claridad. Las circunstancias del momento presente, en continua transformación, añaden al requerimiento orteguiano otro segundo no menos acuciante: la brevedad. Quien auténticamente sabe algo, acierta a decirlo de forma luminosa y en breve espacio, por ejemplo mil palabras. Y este es el espíritu que anima a Javier Gomá en esta colección de ensayos, o microensayos, que se resume así en su título: Todo a mil. El objetivo es, en un (...) millar de palabras, introducir al lector en la almendra de la reflexión filosófica. Así, por ejemplo, alguno de estos microensayos se arriesgan a definir con precisión cuestiones normalmente difusas como la sabiduría frente a la inteligencia o la dignidad humana; hay unos que abogan por actitudes contracorriente, como los beneficios de estar sentado, el desdén hacia las novedades, las ventajas del chisme o la afirmación gozosa de nuestro tiempo; otros critican ideas recibidas tan asentadas como el prestigio de la transgresión, la noción tradicional de 'vida privada', o la molesta tendencia a la sinceridad excesiva; otros más toman posición respecto a la responsabilidad de la crisis o el significado profundo de la paz social conquistada por el Estado de derecho; mientras otros, en fin, expresan la voz más personal del autor. Con este libro, Javier Gomá da un paso más en su decidida voluntad de hacer una filosofía mundana, abierta a todos, y ofrece así la mejor introducción posible, en mil palabras, a los más serios y perennes problemas filosóficos. (shrink)

El artículo se centra en los probables trasfondos socráticos de la teoría de la acción aristotélica. El autor argumenta que Aristóteles incorporó a su propia teoría de la acción los siguientes ingredientes, que son de carácter “socrático”: la tesis de que un agente siempre lleva a cabo una acción en vista del bien o, más bien, de lo que considera que es bueno; la opinión de que hay un momento cognitivo que es previo a la búsqueda de lo que uno (...) considera que es bueno, y la idea de que, para neutralizar “el poder de la apariencia” al intentar distinguir apropiadamente el bien aparente del real, el agente debe fortalecer o refinar sus capacidades cognitivas tanto como sus estados de carácter. This paper focuses on the probable Socratic backgrounds to Aristotle's theory of action. The author argues that Aristotle incorporated into his own theory of action the following ingredients, which are “Socratic” in character: the thesis that an agent always performs an action for the sake of the good or rather of what he or she considers to be good; the view that there is a cognitive moment which is previous to the search for what one regards to be good, and the idea that, in order to neutralize “the power of appearance” when attempting to properly distinguish the apparent from the real good, the agent should strengthen or refine his cognitive abilities as well as his states of character. (shrink)

This essay elaborates on Rodolfo Corky Gonzales’s “Yo soy Joaquín” as an inter-American articulation of the critical commitments of Chicanismo, which is here identified as the sociopolitical philosophy and ideological/normative leanings of Mexican Americans who call themselves Chicanas/os. The purpose of this essay is to show both how syncretism frames Chicanismo as a philosophy of growth and identity beyond borders and that this worldview can be critically explained as seeking alliances to communities and contexts defined by struggle. It engages the (...) historical groundwork, philosophical influences on, and cultural ideals and values voiced through this poem by proponents of Chicanismo among its multiple forms and various representatives. (shrink)

This essay elaborates on Rodolfo Corky Gonzales’s “Yo soy Joaquín” as an inter-American articulation of the critical commitments of Chicanismo, which is here identified as the sociopolitical philosophy and ideological/normative leanings of Mexican Americans who call themselves Chicanas/os. The purpose of this essay is to show both how syncretism frames Chicanismo as a philosophy of growth and identity beyond borders and that this worldview can be critically explained as seeking alliances to communities and contexts defined by struggle. It engages the (...) historical groundwork, philosophical influences on, and cultural ideals and values voiced through this poem by proponents of Chicanismo among its multiple forms and various representatives. (shrink)