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.     

College and university planning in an era of contraction

Drawing from published case studies of U.S. institutions and from case studies conducted in the U.K., the author assesses the causes and characteristics of decline among institutions of higher education and the various types of institutional planning responses. Planning under conditions of instability and decline is held to be significantly different from planning under conditions of growth in that the politics of planning are more intensive and highly defensive. Changes in the standards for organizational consensus in planning under decline are also discussed. The problems and advantages inherent in developing strategic contingency plans as opposed to developing strategic planning policies are noted.The author concludes with a summarization of the contrasting planning styles characteristic of U.S. institutions, U.K. polytechnics and U.K. universities, noting that the model and success of recent University Grants Committee selective cuts among many institutions is more likely to be transferred to the polytechnic sector than across the Atlantic to U.S. institutions.     

Remembering Activities Performed Versus Imagined: A Comparison of Children with Mental Retardation and Children with Normal Intelligence

CHILDREN with mental retardation and children with normal intelligence were asked to perform a series of tasks or to only imagine performing them. They were then asked to remember which tasks had been performed and which had been imagined at an immediate interview and after an eight week delay. There were no overall differences between the two groups in the number of correct responses. However, all children gave more correct responses to specific probes than to open‐ended probes and remembered activities performed better than those imagined. Performance was more accurate for both groups at the immediate interview than at the delayed interview. Responses to questions about activities neither performed nor imagined were good for both groups of children to the initial questions but decreased significantly in response to a follow‐up probe. Accuracy of responses to these misleading questions decreased over the eight week delay.     

A Resource for Eliciting Student Alternative Conceptions: Examining the Adaptability of a Concept Inventory for Natural Selection at the Secondary School Level

The Conceptual Inventory of Natural Selection (CINS) is an example of a research-based instrument that assesses conceptual understanding in an area that contains well-documented alternative conceptions. Much of the CINS’s use and original validation has been relegated to undergraduate settings, but the information learned from student responses on the CINS can also potentially be a useful resource for teachers at the secondary level. Because of its structure, the CINS can have a role in eliciting alternative conceptions and induce deeper conceptual understanding by having student ideas leveraged during instruction. In a first step toward this goal, the present study further investigated the CINS’s internal properties by having it administered to a group (n?=?339) of students among four different biology teachers at a predominantly Latino, economically disadvantaged high school. In addition, incidences of the concept inventory’s use among the teachers’ practices were collected for support of its adaptability at the secondary level. Despite the teachers’ initial enthusiasm for the CINS’s use as an assessment tool in the present study, results from a principal components analysis demonstrate inconsistencies between the original and present validations. Results also reveal how the teachers think CINS items may be revised for future use among secondary student populations.     

Conditioning of the nictitating membrane response of the rabbit (Oryctolagus cuniculus) as a function of length and degree of variation of intertrial interval

The study involved three experiments. The first, a parametric investigation of nictitating membrane conditioning with eight constant intertrial intervals (ITIs) between 5 and 120 sec, orthogonal to interstimulus intervals (ISIs) of 250 and 750 msec plus three temporal conditioning control groups, revealed that performance improved rapidly with increasing ITI but stabilized at relatively low ITI values. At 750-msec ISI, a decrement in performance was found at 60-sec ITI. Experiment II, using constant ITIs of 45–75 sec in 5-sec steps, at 750-msec ISI confirmed the trend toward a performance decrement around 60 sec, although the trend was weak and highly variable. Experiment III evaluated the differences in performance between constant and variable ITI, using three ITI values and three conditions of variation at each value. Findings were discussed in terms of differences in conditioning resulting from both length and degree of variation of ITI and some subtle effects which may emerge only when constant ITIs are used.     

Doctoral Students' Experiences with Pedagogies of the Home,Pedagogies of Love,and Mentoring in the Academy

In this article, a group of nontraditional and/or doctoral students of color and our advisor discuss how the advisor-advisee mentoring relationship has positively affected our experiences within academia. The mentoring relationship, cultivated within a group mentoring model, was integral to our acclimation of the hidden culture of our doctoral programs. We elaborate on the history and mentoring model of the group of which we are a part, and follow with a review of the literature on mentoring practices and a discussion of methodology. Finally, through autoethnographic vignettes, each author discusses his/her experience as a non-traditional and/or student of color and how our relationship with the group has provided us with the logistical, emotional, and psychological support needed to progress in and complete our programs.     

Emotional risk to children caught in violent marital conflict—The Basildon treatment project

This paper outlines the work of the Basildon Marital/Family Violence Project set up as a result of two studies undertaken by the National Society for the Prevention of Cruelty to Children (N.S.P.C.C.) School of Social Work, which looked at the effect of marital violence upon the children involved. These effects were classified under the following headings: (1) the children were scapegoated; (2) used as pawns in the marital battles; (3) turned agression against themselves; (4) had relationship problems at school; (5) were physically assaulted by the parents in 25% of the cases. The project, which is now in its 4th year, has offered social work services, consultation, training courses and research. Work with the families, and particularly with the children, has further emphasised the severe emotional damage that marital violence can have upon the children. The paper optimistically reports that after intensive work using a five-point treatment programme, and direct work with the children, there has been considerable diminution of violence in many of the cases and in some cases no repetition of such violence at all. The worker's approach, it is suggested, should be characterised by optimism combined with indestructible calm, genuine empathy combined with 24-hour access, persistence in the face of lack of progress, enhancement of parents' low self-esteem, regular contact and an ability to contain destructiveness.     

Quality in Group Day Care Provision: UK self‐assessment models in Hungarian day care centres

The importance of quality in the provision of day care services for young children is well established. A project designed to address issues of assessing, maintaining and enhancing standards of service provision in the UK developed a set of self‐assessment materials for use in group day care settings. This paper describes a project to evaluate whether versions of the same materials might be effective in group day care settings in Hungary. Differences and similarities between service provision in the UK and Hungary are described. In a study involving 76 Hungarian day care centres, > 80% of staff involved thought using the materials raised their awareness of quality issues, although the materials did not have a significant impact on the quality of care provided. Key differences between service provision in the UK and Hungary are identified as influencing the potential effectiveness of the materials in assessing, maintaining and enhancing quality.