Effects of trial duration on overall and momentary rates of maintained autoshaped keypecking: Choice and single-stimulus trials

Pigeons were exposed to differentially cued autoshaping trials in which conditioned stimuli were followed by food after 6 or 14 sec. Average and momentary rates of keypecking were examined on two types of unreinforced test trials: single-stimulus probe trials and simultaneous choice trials, each 40 sec in duration. Rates averaged over the 40-sec test trials did not favor the cue associated with the shorter delay to food (the short-delay cue) on either type of test trial; however, average rates prior to the scheduled time of food delivery were reliably higher for the short-delay cue on choice trials. Momentary rates of keypecking during choice trials varied as a function of both cue and elapsed time from trial onset. At short elapsed trial times, rate of pecking was higher for the short-delay cue, with this difference reversing at longer times. A reversal of the programmed relation between key color and delay to food presentation for 5 birds confirmed the generality of these findings. Implications of these data for models of Pavlovian conditioning and for methods of assessing conditioned response strength are discussed.     

Temperament Predicts Processing Speed in Low Socioeconomic Status Rural Preschoolers

Extreme poverty all over the world is concentrated in rural settings. However, studies about cognition in low socioeconomic status (SES) children are for the most part conducted in urban populations. This paper investigates, in a poor rural sample, what are the individual and socioenvironmental variables that make the difference in performance in a processing speed task. Forty four 5‐year‐old children were evaluated with a processing speed task; individual and socioenvironmental information was obtained from parents' interviews. Higher scores in the effortful control dimension of temperament were associated with higher performance in the processing speed task. No other individual or socioenvironmental variable predicted the performance. These results showed that effortful control is important in processing speed and suggest that in low SES rural contexts, low effortful control children would require stronger interventions.     

Spelling difficulties in Spanish-speaking children with dyslexia / Dificultades de escritura en niños españoles con dislexia

In addition to reading difficulties, a significant proportion of developmental dyslexics have spelling problems, which persist into adulthood. Studies carried out in languages with opaque orthographies have found that dyslexics frequently make phonological substitutions when spelling and have difficulties in developing orthographic representations of irregular words. Those errors seem to derive from an excessive use of phonological codes when writing. Minimal research in Spanish (relatively transparent orthography) about the relationship between dyslexia and spelling difficulties has been carried out to date. In this study, 19 Spanish-speaking developmental dyslexics (from 7 to 11 years old) and 28 controls (from 6 to 11 years old, distributed in two groups, one matched for age and the other for reading level with the dyslexics) performed a dictation task of 80 stimuli with different levels of orthographic consistency, in order to discover the codes they use in the writing process. Results showed that Spanish children with dyslexia made significantly more spelling errors, especially among the ruled and irregular words. These findings are consistent with the idea that these children have difficulties in developing orthographic representations and use phonological codes more frequently than non-dyslexics, resulting in phonologically plausible errors when writing irregular words. These results have important implications for the treatment of spelling difficulties in children with dyslexia, highlighting the need to focus on the correct acquisition of grapheme-phoneme conversion rules as well as the development of appropriate orthographic representations.     

On the acquisition of some basic word spelling mechanisms in a deep (French) and a shallow (Spanish) system

An experiment was carried out to compare the time course of the acquisition of two basic spelling mechanisms in Spanish, a shallow system, and French, a deep system. The first was lexical. It relies on the orthographic lexicon, a hypothetical structure containing the orthographic representations of words accessible for word spelling. To evaluate its contribution the participants were asked to spell words of high and low frequency containing phonemes which can take different graphemic values. The second mechanism relies on sub-lexical processes. Its contribution was evaluated asking the participants to spell words containing consistent phoneme-to-grapheme translation pairs which were identical in Spanish and French. Two contrasting predictions were considered, one derived from the Orthographic Depth Hypothesis (ODH, Frost, 2005) and the other from the Self-Teaching Hypothesis (STH, Share, 2004). According to the ODH, the orthographic lexicon should develop more rapidly in French than in Spanish because Spanish spellers can rely on phoneme-to-grapheme translation mechanisms to spell most words, meaning that they do not need to resort to the orthographic lexicon. In contrast, the STH suggests that effective identification of a word gradually generates its orthographic representation. The results revealed that both spelling mechanisms develop far faster in Spanish than in French. The fact that word frequency effects appeared earlier in Spanish than in French, indicating that the orthographic lexicon incorporates words more rapidly in a shallow than in a deep system, is clearly incompatible with the ODH and easier to handle in the context of the STH.     

Understanding inclusion support systems: three inspiring experiences / Comprendiendo los sistemas de apoyo para la inclusión: tres experiencias inspiradoras

This article presents the findings of an empirical study that aimed to gain an in-depth understanding of how inclusive support systems are configured. A qualitative case study approach was used to explore the trajectories, shared beliefs and daily practices that shape the dynamics of three educational centres recognized by external assessors for their inclusive policies and attention to diversity. The analysis carried out enabled the identification of patterns of worldviews and practices that underpin the development of sustainable inclusive school proposals, as well as an understanding of the complex interrelationship between context, resources, opportunities, threats and teaching approaches that define particular dynamics. The findings obtained help to illustrate and provide inspiration for other schools committed to defending the basic rights of all children and young people, as well as designers of educational policies and programmes.     

Chile: From the Pay-for-Access Model to a Civic Right to Information

The earlier funding model adopted by Chile to implement programs of access to scientific information had been unique within Latin America. Countries like Argentina, Brazil, and Mexico had successfully tested charging the service provision to the nation’s general budget, and had achieved a model of universal access. Chile, on the other hand, had followed a path where a co-financing model and the derived logic regarding action of the state created the Electronic Library of Scientific Information Program (BEIC), which limited benefits to only those users who belonged to the institutions that had the ability to pay and already had a consolidated community of researchers. This article reviews public policy options adopted to ensure access to resources of scientific information by the communities of researchers and reflects on the important change that occurred in 2012, when the Chilean State decided to finance the entire cost of the BEIC Program and to define access to information as a de facto universal right. The article also discusses future challenges and new programmatic features as a result of periodic assessments of the program.     

Subgroups of Attributional Profiles in Students with Learning Difficulties and Their Relation to Self‐Concept and Academic Goals

The aim of this article was fourfold: first, to determine whether there are significant differences between students with (N= 173) and without learning disabilities (LD; N= 172) in the dimensions of self‐concept, causal attributions, and academic goals. Second, to determine whether students with LD present a uniform attributional profile or whether there are subgroups of attributional profiles among students with LD. Third, to explore differences between these profiles on the dimensions of self‐concept, academic goals, perception of competence‐incompetence, persistence when faced with failure, peer relationships, and academic achievement. Fourth, to determine whether there are significant differences in the dimensions of self‐concept and academic goals between NLD students and the different LD subgroups. The results indicate the existence of two very distinct attributional profiles in students with LD (Helplessness Profile and Adaptive Profile). The implications of these data with regard to theory and research, as well as educational practice, are discussed.     

Segmentación fonológico-silábica y adquisición de la lectura: un estudio empírico

El artículo presenta una investigación cuyos resultados muestran la menor capacidad de segmentación silábica entre aquellos niños con peor habilidad lectora. Plantea también la funcionalidad, facilidad de aplicación y carácter motivador de la prueba realizada—una tarea de ordenador—para evaluar la capacidad de segmentación.     

Dealing with Diversity and Digital Culture

Cultural diversity is broader than ethnic and language considerations alone. It includes gender, age, economic or social conditions, education, technological infrastructure and computer and information literacy All of these have to be taken into account when digital information is received or provided. Understanding and respecting diversity in each country is a major issue for the country itself, as well as for the information providers from abroad. The main barriers for participating in the digital culture for Latin America are the differences of each of the countries: the few people that have access; the technological infrastructure; the lack of relevant contents in the primary languages; and the fact that English is the pre-dominant language of the Global Information Infrastructure. Nations should focus on three main areas: technological infrastructure, contents and access. Projects should be prepared so as to strengthen the Latin American identity.