Brain mapping in dysphonemic dyslexia: in resting and phonemic discrimination conditions.

Topographic mapping of EEG bands and alpha asymmetry were analyzed during resting conditions and an auditory phonemic discrimination task (APD) in carefully screened samples of 9.0- to 12-year-old control and dysphonemic-sequencing dyslexic children. The EEG was recorded over the entire scalp, with a linked ears reference. We found: (1) no differences between groups during resting conditions in any frequency band analyzed; (2) a left hemisphere alpha responsiveness in dyslexic children during the APD condition; and (3) a beta 2 decrease in the left posterior quadrant in dyslexics during the APD condition. We conclude that the lower alpha and beta 2 responsiveness may be due to a diminished cortical reactivity and may be related to intrinsic disorganization of the neural processors associated directly with the APD task demands, the alpha activity reflecting poor attention to an external stimuli source and the beta 2 decrease reflecting an unusual processing associated with the linguistic cognitive requirements.     

Fear,attachment and affiliation: The interaction of functional systems in 8- and 12-month-old infants

In this research fear of strangers has been analysed as it interacts with attachment and affiliation, and in relation to developmental level, in conditions most similar to the natural situations where encounters with unfamiliar persons take place. A total of 30 infants and their mothers participated. The children were divided into two groups (8-9 and 11-12 months). Each infant was approached by two females, who, in turn, produced either of two natural sequences. Our results allowed us to confirm the universality of fear and its coexistence and interaction with attachment and affiliation. As far as the role that developmental level plays, it was noted that in the 12-month-old infants fear reactions were more intense than in the younger ones. Furthermore, the attachment system was more activated in the older group in the intrusive episodes, but when the threatening nature of the situation decreased, attachment was activated less in the 12-month-old group. Another difference was related to control resources. While in the younger infants we observed a tendency to control their own emotional state, the 12-month-old infants tried to gain control over the stranger. These results were interpreted by considering the adaptative value of an increase with age of the capacity to evaluate a situation's threat value, of attachment security, and of behavioural resources permitting some control over the stranger's behaviour.     

The Protestant Reformation and Social Justice in Latin America

The political effects of the 16th‐century religious reformations have never been in doubt. What is debatable, however, is how these effects have been felt in different contexts. In what is now Latin America, their influence was kept at a distance to avoid the changes in Europe from taking place on the other side of the Atlantic. This article examines Latin American writers to demonstrate how, in the different cultural and geographical contexts of the sub‐continent, the social and political imprint of the Reformation and its emancipating and libertarian emphasis has been perceived.     

On Fundamental Differences between Dependent and Independent Meanings

In “Function and Concept” and “On Concept and Object”, Frege argued that certain differences between dependent and independent meanings were inviolable and “founded deep in the nature of things” but, in those articles, he was not explicit about the actual consequences of violating such differences. However, since by creating a law that permitted one to pass from a concept to its extension, he himself mixed dependent and independent meanings, we are in a position to study some of the actual consequences of his having done so. To make certain of Frege’s ideas about the inviolability of logical form more tangible, I describe a string of very interrelated consequences that his attempt to transform dependent meanings into independent meanings actually brought in its wake.     

Gender Differences in the Relationship of Language Development to Disruptive Behavior and Peer Relationships in Preschoolers

The present study examined whether there are gender differences among preschoolers in how language development is related to disruptive behavior and peer relationships. Participants were 185 largely minority, preschool children from low income families and their 16 teachers. Videotaped observations were coded to assess disruptive and off-task behavior in group learning situations. Teachers rated disruptive behavior and the quality of peer relationships and they provided information about service referrals. Language skills were assessed with standardized tests. Lower levels of language skills were more strongly associated with disruptive behavior and poor peer relationships for boys than for girls. Disruptive behavior was related to the probability that a child would be referred for services. Language development difficulties tended to be seen by teachers only when paired with behavior problems.     

Hippocampal expression of the orphan nuclear receptor gene hzf-3/nurr1 during spatial discrimination learning

The immediate-early gene hzf-3, also known as nurr1, is a member of the inducible orphan nuclear receptor family and is one candidate in the search for genes associated with learning and memory processes. Here we report that acquisition of a spatial food search task is accompanied by elevated levels of hzf-3 mRNA in the hippocampus. Adult male Long-Evans rats were handled, food-restricted, and allowed to habituate to the maze prior to training. During acquisition, rats were given one training session per day for 5 days. Each training session consisted of five trials in which animals searched the maze for food located in 4 of 16 holes in the floor of the maze. Training resulted in spatial acquisition of the task. Northern blot analysis showed significant increases in hippocampal hzf-3 mRNA 3 h after training in the maze. Next, brains were obtained from Naive, Habituated, Day 1, Day 3, and Day 5 animals and processed for in situ hybridization. The results showed significant increases of hzf-3 mRNA in CA1 and CA3 subregions of the dorsal hippocampus during acquisition of the task. We conclude that expression of the hzf-3 gene in the brain is associated with long-term spatial memory processes. The present results are the first to implicate an orphan nuclear receptor in long-term information storage in the hippocampus.     

Birth control and low-income Mexican-American women: the impact of three values

This study examines how 3 particular sociocultural values affect Mexican-American women's attitude, knowledge, and use of birth control. Researchers interviewed 99 low-income married Mexican-American women, 48 of whom had a low level of acculturation and 51 of whom had a high level, focusing on the values of motherhood, male dominance, and sexual expression. While the low acculturation group showed a significant linear relationship between attitudes towards birth control and the 3 values, the high acculturation group failed to exhibit a similar relationship. The study also found that no significant relationship exists between knowledge of birth control and the aforementioned values. The sociocultural values, however, do explain a 30% variability in attitudes towards birth control among the women with low acculturation, as well as a 22% variability in birth control use. Although significant, the results do not fully account for the variability. The study suggests several possible explanations for the unaccounted variance: considering the complexity of the values involved, the instruments involved may have failed to fully uncover their effects; because they were normed on Anglo-Americans, the instruments may not have sensitive enough of Mexican-American attitudes; and finally, the study may have overlooked other important values. Nonetheless, the study points out definite differences in attitudes between high and low acculturation groups. Considering that Hispanic women -- particularly Mexican-American women -- experience a very high birthrate (double that of non-Hispanics), examining sociocultural values may give insights into better family planning methods for this group.