Noise avoidance in the C57BL/6J mouse

Noise was evaluated as an aversive stimulus in the C57BL/6J mouse, using a simple escape/avoidance procedure in which mice could terminate noise by entering and remaining in a designatedsafe area (corner or side) of a square apparatus. Exposed to pulsed noise of 87.5–90 dB, mice spent 45%–50% of total corner time in the safe corner or approximately 80% of total time in the safe side. Acquisition was significantly faster with moderate intensities of pulsed noise (87.5–90 dB) than it was with high-intensity pulsed noise (100 dB). In comparisons of continuous as opposed to pulsed noise, acquisition was significantly faster with continuous (87.5-dB) noise than it was with pulsed noise, and continuous noise was shown in a choice procedure to be more aversive. Continuous noise caused significant, though not severe, suppression of activity, but pulsed noise caused virtually none. Thus, pulsed noise is a mildly aversive stimuhis for C57BL/6J mice and may have promise for the study of stress-induced behaviors in freely moving animals, but continuous noise is clearly more effective for rapid short-term conditioning.     

Comparative Studies and 'Cross-National Attraction' in Education: A typology for the analysis of English interest in educational policy and provision in Germany

This paper describes a 'structural typology' to assist in the analysis of ways in which policy-makers in one country explore educational provision in another and seek to 'borrow' from it. In this analysis we look specifically at England's 'cross-national attraction' to education in Germany over the past 200 years. The paper aims to provide an analytical programme to use in comparative education and to facilitate exploration of the importance of context in shaping educational phenomena.     

Self-disclosure and relational uncertainty as mediators of family communication patterns and relational outcomes in sibling relationships

This study tested the degree to which self-disclosure and relational uncertainty sequentially mediate the associations among family communication patterns (FCP) (i.e., conversation and conformity orientations) and relational outcomes (closeness and satisfaction) in the sibling relationship. Participants included 329 emerging adults who completed online questionnaires. Three distinct indirect effects emerged for conversation orientation on both relational outcomes through self-disclosure, relational uncertainty, and disclosure to uncertainty paths, respectively. Likewise, conformity orientation produced indirect effects on both outcomes through self-disclosure and disclosure to uncertainty, as well as a direct, negative effect on sibling satisfaction. Collectively, the results support FCP theory and extend an understanding of how family communication environments enhance (or inhibit) emerging adults’ sibling relationships.     

Convergent validity of group tests of cognitive development

This study was designed to investigate the convergent validity of individual clinical task interviews as presented by Piaget and Inhelder paired with three widely used group tests of cognitive development. These tests are designed to assess the acquisition of cognitive abilities. The three group test raw scores paired with summed raw scores on four concrete-formal task interviews yielded the following Pearson product-moment correlations: Reasoning Test (Ankney and Joyce), 0.43; Logical Reasoning Test (Burney), 0.61; Classroom Test of Formal Operations (Lawson), 0.37. The raw data was then ranked into cognitive level groups and presented on contingency tables. The following contingency coefficients were determined: Logical Reasoning Test, 0.52; Logical Reasoning Test (adjusted), 0.61; Classroom Test of Formal Operations, 0.50. This study reflects that the Reasoning Test tends to indicate lower cognitive levels of subjects when paired with summed scores on the clinical task interviews, whereas the Logical Reasoning Test and the Classroom Test of Formal Operations tend to indicate higher cognitive levels of subjects when paired with summed scores on the clinical task interviews. In each case the correlations do not appear to be sufficiently strong to warrant selection or categorization of an individual student based on his/her test performance.     

What's in the 'co'? Tending the tensions in co-creative inquiry in social work education

Higher education is one of many fields of practice that have undergone a so-called ‘dialogic turn’ whereby processes of co-creation proliferate as a means of generating knowledge. According to dialogic ideals, co-creation harnesses the transformative potential of dialogue across difference and empowers participants as co-learners or co-researchers. But what does the ‘co’ of ‘co-creation’ entail in practice? The aim of the article is to explore the tensions in the ‘co’ of co-creation through critical, reflexive analysis of the enactment of one particular approach to co-creation, ‘Academic Co-Creative Inquiry’ (ACCI), in a social work course in a higher educational institution in Aotearoa New Zealand. Using the Integrated Framework for Analysing Dialogic Knowledge Production and Communication (IFADIA), the analysis identifies tensions arising in the interplay between top-down and bottom-up dynamics in a contested terrain of dialogic and neoliberal discourses. It is argued that ACCI’s and IFADIA’s reflexive sensitivity in relation to tensions offers some resistance to neoliberalism in higher education.     

Sensitivity of Item Difficulties to Curricular Validity

The issue of the match of what is taught to what is tested recently has received increased emphasis. Many recent studies have examined the extent of the mismatch between a local set of objectives/instruction and the content of a nationally standardized test. Phillips and Mehrens (1985, 1987; see also Mehrens & Phillips, 1986) have conducted a series of studies that show that, within a district, different textbook series and informal curricula generally have no significant impact on test total, objective, or item scores. The present study explored further the curricular validity differences across textbooks and the relationship between item statistics and measures of curricular validity. In particular, this study sought to determine whether item p-values appear to be related to measures of curricular validity based on three mathematics textbook series used at a given grade and in a previous grade. The results of this study indicated that the textbooks differed somewhat in content coverage when using a 180-cell matrix classification. However, these differences were not great, especially when the textbooks in both grades 5 and 6 were considered. Further, all three series covered almost all of the 53 cells in the matrix covered by the Stanford Achievement Test, and the differences that did exist in textbook content coverage had no observable relationship to differences in item p-values. In addition, the mean difficulty level of the Stanford Achievement Test items classified by cell were similar for students using the different textbooks, despite the differences among textbooks in location, presentation, and organization of content.