Schedule-induced polydipsia: Interactions with wheel running

The effect of wheel running on the level and temporal distribution of schedule-induced polydipsia was examined in 12 food-deprived rats given one food pellet per minute for 1 h. For all rats, wheel running decreased the level of Polydipsie intake. It also decreased licking in all six of the 10-sec postpellet intervals except the first. The degree of reduction in licking was a U-shaped function of the 10-sec postpellet intervals and was generally inversely related to the temporal distribution of running. The temporal distribution data are partially consistent with a temporal competition view of the interactions between schedule-induced polydipsia and wheel running     

Double Jeopardy: Testing the Effects of Multiple Basic Skill Deficiencies on Successful Remediation

Prior research has established that the depth and breadth of remedial need in basic skills (math and English) exhibited by a student at college entry are strongly and negatively associated with the likelihood of achieving college-level competency in those subjects (i.e., successful remediation). This well-documented finding is built upon a body of work employing either simple bivariate analyses or regression analyses that assume additive effects. Yet, there are reasons to suspect that multiple basic skill deficiencies, rather than exhibiting additive effects alone, may exhibit a negative multiplicative interaction effect on the likelihood of successful remediation. In this research, I test the hypothesis that the negative effect of math deficiency increases in magnitude with decreasing English competency. Although the data support this hypothesis, I find that this interaction does not have substantive importance in the face of the powerful direct effect of math deficiency on the likelihood of successful remediation in math. Direct all correspondence to the author at the Department of Sociology, Wayne State University, Detroit, Michigan, 48202 (peter.bahr@wayne.edu). I am indebted to Tim Brown, Willard Hom, Myrna Huffman, Tom Nobert, Mary Kay Patton, and Patrick Perry of the Chancellor’s Office of California Community Colleges for their assistance with the data employed in this study, and to Dr. John C. Smart and the anonymous referees of Research in Higher Education for their recommendations concerning improving this work.     

An exploration of teacher's use of iPads for students with learning support needs

This project explored how iPads were being used in a range of K‐12 schools to support the learning of students with a range of learning support needs. Groups of teachers (and other professionals) from the USA, Canada, Australia and the UK were invited to complete an online survey focused on the use of iPads in their classrooms, perspectives of their skill level, and how their school and school districts support the use of iPads. The survey focused on iPad use in classrooms (curriculum and skills); teachers’ skill levels; whether iPads are addressed in the Individualised Education Program (IEP); the systemic support for the iPads; and the perceived benefits and barriers. The results reveal that respondents are using iPads across many areas of the curriculum, which affirms the research in the emerging literature base. However, there are teacher reported differences in the manner and scope of iPad use in the classrooms and also the integration of the iPad in the IEP. The research also highlights variability in reported skill level for the iPad and an increased need for enhanced systemic support, such as training, funding, technical support and administrative support for the use of the iPad as a pedagogical tool.     

Keeping Secrets: ESP/LSP and the sociology of knowledge

Summary This article examines the notions of ‘specialisation’ or ‘specificity’ as they are used in expressions such as ‘English for special purposes’ (ESP) or languages for specific purposes’ (LSP). It is argued that a given variety of language is not ‘special’ or ‘specific’ in some absolute or objective way, inherent to its formal structures, topics and norms. ‘Specificity’ is, rather, the result of a particular relationship between participant and discourse, between two cultures or worlds of knowledge. For these reasons, it is often not particularly helpful to attempt to describe specific varieties in terms of linguistic features. Instead, we need to situate the problem within a general theory of the sociology of knowledge by asking fundamental questions such as ‘Specialised for who?’ and ‘Who knows what?’, ‘How do they acquire and use their knowledge?’. Such a theory will necessarily be both relative and social: relative to the individual and to the way in which knowledge is socially distributed. But it will also be a theory of discourse, since interactive language‐use is the principal mechanism by which individuals acquire, stock and share all knowledge, ‘specialised’ or otherwise. It is suggested that two factors need to be kept in mind by the didactician interested in LSP. First, is the discourse asymmetric?, i.e. does it assume or contain knowledge which the learner does not have? Secondly, is the discourse non‐collaborative?, i.e. one where no attempt is made to share the knowledge with uninitiated participants.     

The interaction of conditioned taste aversions and schedule-induced polydipsia: Availability of alternative behaviors

Animals poisoned following exposure to saccharin subsequently avoided the schedule-induced consumption of saccharin. While this suppression was transient for subjects who had access only to the saccharin solution during the free-food presentations, recovery of schedule-induced saccharin consumption was significantly retarded for subjects who had concurrent access to saccharin and a running wheel. It has been suggested that the transient suppression of schedule-induced polydipsia by conditioned taste aversions results from the pellet-induced tendency to drink within the schedule-induced polydipsia procedure. That access to the running wheel reduces schedule-induced polydipsia in general and prolongs the suppression of schedule-induced polydipsia by taste aversions supports this view.