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.     

Relationship of changes in student motivation to student evaluations of instruction

Research has demonstrated that student evaluations of instruction are influenced by variables extraneous to the instructional procedures being evaluated. One of the most important of these is the student's motivation to take the course. The Instructional Development and Effectiveness Assessment (IDEA) system controls this variable by comparing a course evaluation to a norm group of courses having students with similar motivation. The present study examined the possibility that the IDEA procedure of having students rate their precourse motivation at theend of a course might be unacceptable, because the rating would be influenced by experiences within the course itself. The data indicated that postcourse ratings of precourse motivation do deviate somewhat from actual precourse ratings, but the deviation is not of an order of magnitude which would seriously distort the interpretation of the ratings.     

Sex and Social Class Inequalities in Education: a re‐examination

Fifteen years ago attention was drawn to the neglect of sex differences in the sociology of education, and to ways in which social class differences in attainment could not ignore these sex differences. The original propositions concerning these differences are re‐examined and expanded in a neo‐Weberian analysis of the work‐marriage, class‐status, education complex, and considered in relation to the available empirical evidence. The alternative feminist‐Marxist approaches are found to be incompatible with the evidence of sex and social class differences in non‐capitalist societies.     

Formula-based research incentive plans at colleges and universities

Financial problems at colleges and universities have led many institutions to initiate extra efforts to obtain extramural funds. One such effort has been the establishment of formula-based research incentive plans. These plans generally utilize the recovery of indirect costs as the basis for allocating additional incentive funds to various areas as an encouragement to obtain additional extramural funds. Data from surveys conducted by the University of Missouri-Kansas City and Ohio University were combined with National Science Foundation reports to provide information about this relatively recent phenomena. The increasing popularity of these plans was shown in that a majority of institutions had such plans in effect during FY 1979. Analyses of the effectiveness of these plans showed no statistically significant differences between institutions with incentive plans and those without such plans, although mean federal research expenditures were approximately 20% greater at those institutions without these incentive plans. The evidence presented indicates that the receipt of federal research funds is not associated with the use of a formula-based research incentive plan.     

Organisational Change in Secondary Schools: an action approach

A longitudinal study of a sample of secondary schools has shown that over a period of ten years there have been changes in grouping practices, an expansion of examination opportunities, and a tightening of the control of school work. The prefectorial system has a reduced importance and has been deritualised, as has the school assembly. There is less sex differentiation of pupils’ school work and behaviour. These changes are explained using an action approach derived principally from Weber, concerned with the social construction of school organisation, whch is briefly compared to other possible explanations.     

期刊评价：影响因子及其相关指标

在西部大开发环境下，联系陕西省科技期刊的现状，研究了陕西省科技期刊的发展策略，首次提出“寓发展于服务中、中陕西省科技期刊与西部大开发的结合点。指出陕西省科技期刊发展的基本原则是坚持两个效益辩证统一，发展的出发点是服务西部大开发。     

The Virtual Game: Objects, Groups, and Games in the Works of Pierre Levy

This article critically engages the theme of the game as a model for identity, community, and the meaning and function of objects in a recent work by Pierre Levy. Two of Levy's books have recently appeared in English translation, making this a timely moment to return to this theme that resonates throughout cultural modernity, especially in the areas of business, the military, sports, and, of course today, in digital software and network design.