Sensitive periods in the development of attachment and the age of entry into day care

This study investigated how the age of entry into regular group day care may influence, in the context of other relevant variables, some short-time outcomes of this experience. In particular the study focused on behaviours expressing well-being or discomfort in the day care environment during the third year. Subjects were 129 young children who were enrolled in group day care when they were 6–29 months old. During their third year their social behaviour was evaluated by caregivers with the Day Care Adaptation Scale. Researchers observed 54 of the children in reunion with their parents. The quality of care was rated with the ITERS scale. It was found that children who started day care in the intervals 6–12 months and 18–23 months displayed more frequently difficult reunions with their mothers, and were rated as less resistant to frustration. Children who started day care from 12–17 months showed lower relational distress. Some significant relationships were found between the ratings of ITERS and the Day Care Adaptation Scale. These findings are discussed with reference to theories of attachment.     

The effectiveness of Web search engines for retrieving relevant ecommerce links

Ecommerce is developing into a fast-growing channel for new business, so a strong presence in this domain could prove essential to the success of numerous commercial organizations. However, there is little research examining ecommerce at the individual customer level, particularly on the success of everyday ecommerce searches. This is critical for the continued success of online commerce. The purpose of this research is to evaluate the effectiveness of search engines in the retrieval of relevant ecommerce links. The study examines the effectiveness of five different types of search engines in response to ecommerce queries by comparing the engines’ quality of ecommerce links using topical relevancy ratings. This research employs 100 ecommerce queries, five major search engines, and more than 3540 Web links. The findings indicate that links retrieved using an ecommerce search engine are significantly better than those obtained from most other engines types but do not significantly differ from links obtained from a Web directory service. We discuss the implications for Web system design and ecommerce marketing campaigns.     

Exploring marine ecosystems with elementary school Portuguese children: inquiry-based project activities focused on ‘real-life’ contexts

The purpose of the study was to investigate how young students engage in an inquiry-based project driven by real-life contexts. Elementary school children were engaged in a small inquiry project centred on marine biodiversity and species adaptations. All activities included the exploration of an out-of-school setting as a learning context. A total of 49 students and 2 teachers were involved in the activities. The research methods included observation, document analysis and content analysis of the answers to a questionnaire and an interview. The results revealed that most of the students acquired scientific knowledge related to biological diversity and adaptations to habitat. Moreover, students progressively demonstrate greater autonomy, argumentative ability and decision-making. One implication of the present study is that elementary science curriculum could be better managed with inquiry project-based activities that explore different types of resources and out-of-school settings.     

Difficulties in semantically congruent translation of verbally and symbolically represented algebraic statements

Educational Studies in Mathematics - This paper describes the difficulties faced by a group of middle school students (13- to 15-year-olds) attempting to translate algebraic statements written in...     

The International Standing Conference for the History of Education and Paedagogica Historica: a historical view on institutional strategies and practices

This article seeks to contribute to the institutional history of the discipline of history of education by examining the publication strategies and the associated institutional practices of the International Standing Conference for the History of Education, the international organisation representing those working in the field, and Paedagogica Historica, the most significant journal in the discipline internationally, as well as illuminating the interactions and interrelationships between the two institutions. It will focus on the early 1990s, due to the fact that, at the end of the 1980s, both institutions found themselves facing crises which led to profound and far-reaching processes of reform, which in their turn engendered a rapprochement and, eventually, cooperation between the two institutions. After providing brief overviews of the development of both ISCHE and Paedagogica Historica up to and into the 1980s, the article will concentrate in its third part on the long-lasting – commencing after ISCHE’s foundation in 1979 – and multi-faceted relationship between the two, both of which made significant contributions to the emergence of an international academic community of those working in history of education. The article will additionally explore the range of strategies used by the two institutions in relation to the publication of findings in the field and the institutional practices of cooperation with and demarcation from one another exercised by ISCHE and Paedagogica Historica.     

Living Together in European Intercultural Schools: the case of the Catalan school system (Spain)

There are practical difficulties in making intercultural education a substantial element of inclusion in both primary and compulsory secondary education in Europe. The Spanish education system and, in particular, the Catalan education system, have developed a series of strategies in response to the new multicultural complexity encountered in both the classroom and society as a whole. In this study, several inclusive attempts of the Catalan education system will be discussed. As a consequence of their analysis, educational models that are compatible with the framework of inclusive education will be presented as an effective means of promoting greater social integration and a peaceful coexistence in the school context.     

Over-education and its opportunity cost in Japan

In this paper, we investigate the determinants of over-education in Japan and evaluate its opportunity costs for university graduates. To this end, we use the REFLEX data. Results reveal that over-education level in Japan is high and it brings an important wage penalty for Japanese workers. Large firm and high occupations point toward a significant reduction in the likelihood of over-education. Results for wage regressions for over-education indicate that Japanese workers who achieve jobs in large organizations will experience 20 % increase in their wage due to the firm size and, if over-educated, their increase in wage will remain positive. Results for women are puzzling as there is no significant effect associated with gender.     

Mediating Frida: Negotiating Discourses of Latina/o Authenticity in Global Media Representations of Ethnic Identity

This article analyzes the discourses of Latina/o identity embedded in the movie Frida, the Latino news coverage about the film, and an on-line chat stream about the film. Comparing the identity discourses circulated by the movie's producers, Latina/o journalists, and Latina/o audiences when discussing the film shows how different communities negotiate the meanings of ethnic identity. The study concludes that the discourses of ethnic identity circulated through the movie, news coverage, and chat stream disrupt notions of Latina/o ethnic identity as a stable and commodifiable demographic category.     

Total Protein of Whole Saliva as a Biomarker of Anaerobic Threshold

Saliva provides a convenient and noninvasive matrix for assessing specific physiological parameters, including some biomarkers of exercise. We investigated whether the total protein concentration of whole saliva (TPWS) would reflect the anaerobic threshold during an incremental exercise test. After a warm-up period, 13 nonsmoking men performed a maximum incremental exercise on a cycle ergometer. Blood and stimulated saliva were collected during the test. The TPWS anaerobic threshold (PAT) was determined using the Dmax method. The PAT was correlated with the blood lactate anaerobic threshold (AT; r = .93, p < .05). No significant difference (p = .16) was observed between PAT and AT. Thus, TPWS provides a convenient and noninvasive matrix for determining the anaerobic threshold during incremental exercise tests.