CS preexposure: Latent inhibition and Pavlovian conditioning of heart rate and eyeblink responses as a function of sex and CS intensity in rabbits

Male and female rabbits received Pavlovian conditioning in which a 1, 216-Hz tone served as the CS and a 3-mA paraorbital electric shock train served as the US. Eyeblink (EB) and heart rate (HR) CRs were assessed. Half of the animals received prior exposure to the CS, while half were restrained in the chamber for a similar length of time but did not receive prior CS exposure. Different groups of each sex received three different CS intensities including 60, 75, and 90 dB (SPL) during both preexposure and conditioning. The results revealed that latent inhibition of the EB CR occurred only at the intermediate CS intensity, as indicated by a significant impairment of EB conditioning in this group. However, the magnitude of the decelerative HR CR was attenuated by prior CS exposure at all three CS intensities. Females showed faster EB conditioning than males, but latent inhibition occurred in both sexes. These results suggest that somatomotor and autonomic systems are affected differently by prior CS exposure.     

The origin of centrality deficit in text memory and comprehension by poor comprehenders: a think-aloud study

The present study employed a think-aloud method to explore the origin of a centrality deficit (i.e., poor recall of central ideas) found in poor comprehenders (PC). Moreover, utilizing the diverse think-aloud responses, we examined the overall quality of text processing employed by PC during reading, in order to shed more light on the cognitive underpinnings underlying their poor comprehension and memory after reading. To address these goals, adolescents with good and poor comprehension, matched on reading (decoding) skills, were asked to state aloud whatever comes to their mind during the reading of two expository texts. After reading, the participants freely recalled text ideas and answered multiple-choice questions on the texts. Results indicated that PC exhibited lower performance than good comprehenders (GC) on the recall and comprehension tasks. The think-aloud protocols indicated that PC generated fewer responses than GC that reflect high-level, deep text processing, and more responses that reflect low-level, surface text processing. Furthermore, compared to GC, PC reinstated fewer prior text ideas, with this reduction being significantly greater for central than for peripheral ideas. Finally, the proportions of deep processing responses in general were positively associated with participants’ performance on recall and comprehension tasks. These findings suggest that PC exhibit poor text comprehension and memory, particularly of central ideas, because they construct a low-quality, poorly-connected text representation during reading, and produce fewer, less-elaborated retrieval cues for subsequent text comprehension and memory. This explanation is further illuminated in the context of previous findings and theoretical accounts.

     

Making the Invisible Visible. On Participation and Communication in a Global, Web-based Master’s Programme

This study focuses on the discourse of an intercontinental on-line Master’s programme in adult learning, using English as the lingua franca of the programme and involving four collaborating universities in Sweden, South Africa, Canada and Australia. The programme is highly interactive, emphasising communication between students. Taking the variation in participation as the point of departure, a discourse analysis aiming at analysing the contingencies contributing to the pattern of communication in the programme was undertaken. Data consist of a variety of texts on-line web-documents, written notes, and narratives that participants wrote about their lives related to participation in the programme. The use of English as the lingua franca contributed to a mistake anxiety, which for some students was hampering their communication in the programme. Aspects of the material world such as the vast differences in the efforts and costs for participating in the programme were also highly interrelated to the shaping of socio-culturally situated identities among the students and thereby contributing to the variation in frequency in participation. The results show that the official discourse of the programme as a text, with its emphasis on equity, change and development, gets subordinated to the discourses produced and reproduced by the students in the programme as a discursive practice and social practice. The students’ accounts reveal that there are fragments of an alternative discourse emerging, based on mutual concern and friendship, which might suggest a potential for changing the communicative patterns in the programme.     

STAFF AND PEER ASSESSMENT ‐ MEASURING AN INDIVIDUAL'S CONTRIBUTION TO GROUP PERFORMANCE

Group Modelling is expanding in the UK and has provided a suitable medium for Communication training at Robert Gordon's Institute of Technology. The CNAA has approved a scheme in which 10% of the marks in Mathematical Models and Methods course are peer awarded. The criteria which students use are not cited explicitly because the scheme wishes to reflect the shift from staff‐sponsored instruction to self/peer sponsored perception of relationships and the tender of solutions. The scheme provides the opportunity to measure what happens outside class contact hours and is proving an effective method of group assessment.     

Opening dimensions of variation: An empirical study of learning in a Web-based discussion

The discussions held in specifying an automaticvehicle as a project in a distance work-relatedcourse are in focus for an analysis of learningin networked discussions. Learning ischaracterised as coming to experience things indistinctly new ways, in keeping with theunderlying phenomenographic research approachfor the study. Group discussions are seen asone feature in the experience of, and theformation of, the context for learning, in anexperiential interpretation of activitysystems. The analysis has led to theidentification of pivotal contributions todiscussions that can be said to afford learningwithin the group, in the sense of openingdimensions of variation around criticalfeatures of the task. This is developed toproduce a taxonomy of contributions, withparticipatory, factual, reflective and learningcontributions, suggested to be necessary,though not sufficient, conditions for learning.The taxonomy is illustrated and discussed, asare its implications for tutoring in networkedcourses of this type.     

Assessing Coping Behavior in Children with Learning Disabilities

This article describes the Coping Inventory, an observation instrument based on Lois Murphy's longitudinal study of children's coping behavior. The inventory is used to assess forty‐eight coping behaviors and to develop a profile which generates goals and objectives in a child's Individualized Educational Plan aimed at increasing coping competence. Examples and supportive technical data are given.     

THE PRACTICALITY OF IMPLEMENTING CONNECTED CLASSROOM TECHNOLOGY IN SECONDARY MATHEMATICS AND SCIENCE CLASSROOMS

Connected classroom technology (CCT) is a member of a broad class of interactive assessment devices that facilitate communication between students and teachers and allow for the rapid aggregation and display of student learning data. Technology innovations such as CCT have been demonstrated to positively impact student achievement when integrated into a variety of classroom contexts. However, teachers are unlikely to implement a new instructional practice unless they perceive the practical value of the reform. Practicality consists of three constructs: congruence with teacher’s values and practice; instrumentality—compatibility with the existing school structures; and cost/benefits—whether the reward is worth the effort. This study uses practicality as a framework for understanding CCT implementation in secondary classrooms. The experiences of three science teachers in their first year implementing CCT are compared with matched-pair mathematics teachers. Findings suggest that despite some differences in specific uses and purposes for CCT, the integration of CCT into regular classroom practice is quite similar in mathematics and science classrooms. These findings highlight important considerations for the implementation of educational technology.