Recovery from sexual satiety in male rats

In order to describe more completely the time course of recovery from sexual satiety in male rats, 18 males were tested after each of six recovery intervals: 3, 6, 9, 11, 13, and 15 days. Different recovery rates were found for different measures of behavior. While most measures were restored to baseline levels by 6 days following satiation, the postejaculatory interval following the second ejaculation was still prolonged after 9 days of rest. No changes were seen in the number of intromissions preceding ejaculation. Systematic changes over the course of the experiment were found in the measures of copulatory behavior taken in the sessions that preceded each recovery test.     

Neuropsychology of Early-treated Phenylketonuria: Specific Executive Function Deficits

This study explored the hypothesis that children with early-treated phenylketonuria (PKU) are selectively impaired on executive function measures, even when still on diet. The rationale for this hypothesis is that even mild elevations in phenylalanine (Phe) can lead to lower central levels of biogenic amines, including dopamine (DA). We hypothesize that this mild DA depletion causes subtle prefrontal dysfunction, which in turn affects executive functions such as set maintenance, planning, and organized search. 11 preschool early-treated PKU children (M age = 4.64) and a sample of age- and IQ-matched unaffected peers (n = 11) were evaluated on a battery of executive function (EF) measures. In addition, a "non-executive function" task, recognition memory, was administered to all subjects. Group comparisons demonstrated that PKU children were significantly impaired on an executive function composite score; there were no group differences, however, in recognition memory. These results supported the hypothesized specific deficit in executive function. Furthermore, within the PKU group the executive function composite score was significantly negatively correlated with concurrent phenylalanine levels, even after controlling for the correlation between IQ and executive function skills. This second finding provides support for the proposed biochemical mechanism underlying the specific cognitive deficits.     

Noncontingent and contingent no-choice intervals and concurrent performance

Pigeons responded to changeover-key concurrent variable-interval variable-interval reinforcement schedules while there were intervals during which the changeover key was inoperative (no-choice intervals). In Experiment 1, a multiple schedule on the changeover key signaled choice and no-choice intervals. All subjects showed near-perfect discrimination during initial discrimination training and rapid reacquisition of discrimination following contingency reversals. In Experiment 2, the onset of no-choice intervals was unsignaled and contingent on interchangeover time. The temporal distribution of changeover-key responses conformed to the temporal distribution of choice intervals. The results of both experiments suggest that changeover responding is modifiable as a function of its immediate consequences. The results of Experiment 2, in particular, suggest that time or some correlate of time since the last changeover response can determine subsequent changeover behavior.     

(Re)Configuring masculinities in an ethno-centric Australian community school: complexity and contradictions

This article draws on a case study of 15 boys aged between 13 and 14 years who attend an urban ethno-centric community school located in Melbourne, Australia. The study investigated how the boys' constructions of masculinity were mediated by a strong connectedness to their Greek cultural traditions and ideals. Data generated from focus group discussions provided insights into the complex ways in which the boys individually and collectively constructed their understandings of what it means to be a man. For most boys, maleness constituted cultural traditions and behaviours that must be learnt: a code of conduct which a boy acquires from his elders that is talked into existence and transmitted through a hegemonic discourse. Yet the findings also revealed the agency boys can exercise and the fluidity of their configurations: contradictions and inconsistencies being an inherent part of the recursive process of their gendered identity formation.     

Higher education change and professional-academic identity in newly ‘academic’ disciplines: the case of nurse education

This article is a study of the competing academic and professional identity frameworks of lecturers whose discipline has only recently become part of the business of higher education. The article engages with important questions about higher education change and purpose, standards and parity among disciplines. Taking a critical ethnographic approach, it combines policy discussion of shifting higher educational and nurse education regimes with an insider investigation into the attempts of a group of new nurse lecturers in a pre-1992 English university to make sense of their work and identity in an already contested site. These experiences and perceptions are analysed from the perspectives of autonomy, status and rival knowledge regimes. By underlining the diversity of lecturer experiences in these terms, the article contributes to discussion of new stratification. It suggests that despite the apparent merging in many respects of professional and academic frameworks, higher education practitioners in such newly ‘academic’ disciplines can still find traditional professional identities more reliable conferrers of meaning than academic ones.     

Charles Dickens and his audience

The speaker‐audience relationship was of interest to Dickens throughout his life. This paper discusses his observations of other speakers and suggests reasons for his own remarkable rapport with his audiences.     

Portugal

In the library literature, a great deal of interest in patron-driven collection development has recently been expressed, especially in those programs that link acquisitions with interlibrary loan. However, the implementation of such programs has been limited, at least in part because of concerns over the potential for wasteful spending. The authors will attempt to address this common concern by assessing whether monies spent via a patron-driven acquisitions program were more or less effective than monies spent via traditional modes of acquisition.