Median decision techniques as an alternative to the classical statistical inference test

In the research area, the criterion to test a hypothesis is frequently the distance of each subject from the mean of the distribution. This concept of distance is constantly used and re-used as a source of evidence in the search for significant contrasts with respect to models of theoretical probability. This paper proposes a number of ideas regarding the use of new distance indicators related to statistics that rely less heavily on parametric assumptions, in particular, the use of median confidence intervals. We have simulated via EXCEL different data samples for a design of two independent groups under 15 different conditions in two different situations: mean equality and mean differences. The results showed the high sensitivity of the comparison of the confidence intervals, especially if a strict decision criterion is used. However, we did not obtain good results for sensitivity. In fact, in some cases, the comparison of the confidence intervals of the mean worked better than those of median.     

The effects of sleep deprivation on the attentional functions and vigilance

The study of sleep deprivation is a fruitful area of research to increase our knowledge of cognitive functions and their neural basis. In the current work, 26 healthy young adults participated in a sleep deprivation study, in which the Attentional Networks Test for Interactions and Vigilance (ANTI-V) was performed at 10a.m. after a night of normal sleep and again at 10 a.m. after 25.5-27.5 h of total sleep deprivation. The ANTI-V is an experimental task that provides measures of alerting, orienting and executive control attentional functions. Compared with previous versions, the ANTI-V includes a vigilance task, more reliable auditory alerting signals, non-predictive peripheral orienting cues, and also a neutral no-cue condition allowing the analysis of reorienting costs and orienting benefits. Thus, new evidence to evaluate the influence of sleep deprivation on attentional functioning is provided. Results revealed differences in both tonic and phasic alertness after sleep deprivation. Vigilance performance was deteriorated, while a warning tone was more helpful to increase participants' alertness, resulting in slightly faster RT and, in particular, fewer errors. The reorienting costs of having an invalid spatial cue were reduced after sleep loss. No sleep deprivation effect on the executive control measure was found in this study. Finally, since no control group was used, particular precautions were taken to reduce the influence of potential practice effects.     

Sobre la Educación Estética en el Ámbito Familiar

En 2004, la ONU conmemoró el Año Internacional de la Familia. Es nuestro interés tratar aquí un aspecto de la educación con frecuencia inescuchado (la educación estética) en un ámbito educativo primordial como es la familia, y a menudo también pasado por alto o dado por supuesto, centrándonos especialmente en la experiencia del cine como colaboradora de la educación estética. Resaltamos la relevancia del estilo familiar de vida, los hábitos elementales de higiene, vestimenta y alimentación, el uso de juguetes, la decoración y, especialmente, el trato en las relaciones humanas: gestos, usos del habla en las conversaciones, etc. Todo ello colabora a poner en juego el cultivo de los sentidos externos: tacto, olfato, gusto, oído y vista, así como los internos: imaginación, memoria, experiencia de la vida. Y constituye una excelente preparación para la educación afectiva, moral, intelectual y social de los niños y las niñas. Una concreción pedagógica de la educación estética en la familia la constituye el cine. Éste requiere especialmente el acompañamiento de padres y educadores durante los primeros años para extraer la virtualidad educativa que el cine encierra. La estructura del texto responderá, por tanto, a tres apartados:

1. La educación estética en el desarrollo de la personalidad humana.
2. La familia como ámbito educativo en la esfera de lo estético.
3. Una concreción de la educación estética: el cine.

     

Concerning the Madrid Lecture: the equivocal character of Pavlov's reflexological objectivism and its influence on the distorted concept of the physiology-psychology relationship

The aim of this study is to bring to light and make clear the characteristic equivoque Pavlov made when he conceived the neurophysiological circuit involved in conditioned behavior as if this circuit contained or reduced, in its own terms, such behavior. I also wish to point out how this interpretation implies a distorted concept of the relationships between neurophysiology and behavior. As an alternative, it is proposed that behavior, which is always operant behavior, is not at all reducible to its neurophysiological ingredients, but instead acts like an arrow-head for adaptation that, in turn, confers a subordinate function to the neurophysiological ingredients involved. To make this evident, behavior is considered an operant organic activity that takes place in an environment of "remote co-present" texture, and different from its neurophysiological ingredients, which take place within the context of spatial contiguity relationships.     

Differential age effects on attention-based inhibition: inhibitory tagging and inhibition of return

The purpose of this study was to determine whether 2 forms of attentional inhibition, inhibition of return (IOR) and inhibitory tagging, are differentially affected by the aging process. The authors tested 24 younger adults (mean age = 22 years) and 24 older adults (mean age = 69 years) on a combined IOR and Stroop task (Vivas & Fuentes, 2001). As predicted, younger adults' performance was consistent with inhibitory tagging of objects at inhibited locations. Although older adults demonstrated intact IOR, there was no evidence of inhibitory tagging. The results suggest that age deficits in inhibition are selective.     

Coping strategies and depression in Puerto Rican adolescents: an exploratory study

The use of inadequate coping strategies in stressful situations results in the development of depression in adolescents. This study identified coping strategies used by Puerto Rican adolescents and evaluated the relationship between coping and depression. Fifty-one adolescents participated in the study. Results indicated that the most frequently used coping strategy was developing positive perceptions about life situations. Significant differences were observed according to the severity of depressive symptoms. Investing in family relationships and developing positive perceptions about life situations seemed to reduce depression. Furthermore, the strategies of investing in family relationships and relieving tension through diversion were the variables with more predictive value for depression. The importance of exploring coping responses within the cultural context of the adolescent is discussed.     

Colonic sensitivity in irritable bowel syndrome and normal subjects according to their hemispheric preference and cognitive style

According to our earlier results, non-painful, weak afferent visceral signals may exert a steady influence on brain processes, including cognitive functions. In the present series colonic impulses of irritable bowel syndrome (IBS) subjects served as a model of chronic impact from the gut. Hemispheric preference, as well as cognitive style of information processing served as indicators of covert changes in brain functions. In twentyone IBS patients and in ten control subjects of both sexes, the thresholds of minimal colonic distension sensitivity has been measured following the determination of hemispheric preference and of advantage in verbal or spatial information processing of the subjects. In IBS patients distension thresholds proved to be higher in verbals than in spatials, whereas in healthy controls the relationship of colonic thresholds and verbal versus, spatial advantage was reversed. Among the normal controls with left hemisphere preference a significantly higher distension threshold has been observed than in those with right hemisphere preference, whereas in the IBS group such threshold-differences were not observable.     

Recognition of Facial Expression in Diverging Socioeconomic Levels

Cerebral organization has been seen to vary in different social or ethnic groups; also, sociocultural retardation is a serious obstacle to development in poorer countries. The ability of the right hemisphere to recognize facial emotions in a tachistoscopic task was tested in university and low-socioeconomic-level subjects. All were male and right-handed. The university students recognized facial emotions projected to their left field-right hemisphere significantly better than with their right field-left hemisphere; the low-socioeconomic-level subjects showed no differences in hemispheric performance. The explanation of laterality as a function of social class may be of importance in dealing with sociocultural retardation.     

DISTINCTIVELY HUMAN? MEANING-MAKING AND WORLD SHAPING AS CORE PROCESSES OF THE HUMAN NICHE

Part of the task in studying human evolution is developing a deep understanding of what we share, and do not share, with other life, as a mammal, a primate, a hominin, and as members of the genus Homo. A key aspect of this last facet is gained via the examination of the genus Homo across the Pleistocene. By at least the later Pleistocene members of the genus Homo began to habitually insert shared meaning into and onto their world forming one of the bases of contemporary human abilities to develop a distinctive human niche and human culture. Meaning-laden cultural dynamics constitute the core of a ubiquitous semiotic ecosystem, which in turn structures the architecture of the complex niches and niche construction processes that characterize humanity today. Here, I offer a summary of Pleistocene evolution of the genus Homo and an argument for when and how that extensive and distinctive capacities for shared meaning-making and a particularly dynamic niche construction emerged.